test(pi): separate stopped and failed history replay cases

Keep the original session identity and missing-folder cleanup when releasing
history-only runtimes. Use an existing directory in the regression so the
newer resume fallback does not try to copy a nonexistent session fixture.
Cover interrupted and failed replay, interactive residency, and automatic
cleanup of a missing-folder history copy.

Co-authored-by: Ryan Winograd <ryan@thewinograds.com>

.oxlintrc.json

@@ -406,10 +406,7 @@
     {
       "files": [
         "packages/app/src/app/_layout.tsx",
-        "packages/app/src/app/pair-scan.tsx",
         "packages/app/src/components/adaptive-modal-sheet.tsx",
-        "packages/app/src/components/add-host-method-modal.tsx",
-        "packages/app/src/components/add-host-modal.tsx",
         "packages/app/src/components/agent-list.tsx",
         "packages/app/src/components/agent-status-dot.tsx",
         "packages/app/src/components/attachment-lightbox.tsx",
@@ -428,7 +425,6 @@
         "packages/app/src/components/hosts/host-picker.tsx",
         "packages/app/src/components/icons/paseo-logo.tsx",
         "packages/app/src/components/left-sidebar.tsx",
-        "packages/app/src/components/pair-link-modal.tsx",
         "packages/app/src/components/plan-card.tsx",
         "packages/app/src/components/provider-diagnostic-sheet.tsx",
         "packages/app/src/components/question-form-card.tsx",
@@ -543,14 +539,10 @@
         "packages/app/src/agent-skills/selection-sheet.tsx",
         "packages/app/src/agent-stream/chat-outline/rail.web.tsx",
         "packages/app/src/agent-stream/view.tsx",
-        "packages/app/src/app/pair-scan.tsx",
         "packages/app/src/changelog/internal/changelog-sheet.tsx",
         "packages/app/src/command-center/command-center.tsx",
         "packages/app/src/components/adaptive-modal-sheet.tsx",
-        "packages/app/src/components/add-host-method-modal.tsx",
-        "packages/app/src/components/add-host-modal.tsx",
         "packages/app/src/components/add-project-flow.tsx",
-        "packages/app/src/components/add-remote-ssh-host-modal.tsx",
         "packages/app/src/components/agent-list.tsx",
         "packages/app/src/components/app-diagnostic-sheet.tsx",
         "packages/app/src/components/attachment-lightbox.tsx",

docs/design.md

@@ -35,7 +35,7 @@ The authored interface ramp uses a 14px base. New native installs default to 15p
 Weight has three tiers, applied by role:
 
 - **Screen titles** — the title in app chrome — use `<ScreenTitle>` (`packages/app/src/components/headers/screen-title.tsx`), which renders `fontSize.base` at weight `400` on compact and `300` on desktop. The New workspace hero is the only larger product title; it uses `fontSize["2xl"]` (`packages/app/src/screens/new-workspace-screen.tsx`).
-- **Structural labels** use `fontWeight.medium`. This applies to section labels above a stack of rows (`packages/app/src/components/agent-list.tsx:519-523`, `packages/app/src/components/keyboard-shortcuts-dialog.tsx:63-67`), form field labels above an input inside a modal (`packages/app/src/components/add-host-modal.tsx:19-23`, `packages/app/src/components/pair-link-modal.tsx:24-28`), the title at the top of a modal/sheet/dialog (`packages/app/src/components/adaptive-modal-sheet.tsx:90-94`, `packages/app/src/components/ui/combobox.tsx:1607-1611`, `packages/app/src/components/welcome-screen.tsx:48-53`), action button labels in tight components such as the sidebar callout actions (`packages/app/src/components/sidebar-callout.tsx:218-221`), and inline data emphasis on dense metadata rows (`packages/app/src/components/git-diff-pane.tsx:2322-2327`, `packages/app/src/components/file-explorer-pane.tsx:1115-1122`).
+- **Structural labels** use `fontWeight.medium`. This applies to section labels above a stack of rows (`packages/app/src/components/agent-list.tsx:519-523`, `packages/app/src/components/keyboard-shortcuts-dialog.tsx:63-67`), form field labels above an input inside a modal (`packages/app/src/hosts/add-host/internal/add-host-modal.tsx:19-23`, `packages/app/src/hosts/add-host/internal/pair-link-modal.tsx:24-28`), the title at the top of a modal/sheet/dialog (`packages/app/src/components/adaptive-modal-sheet.tsx:90-94`, `packages/app/src/components/ui/combobox.tsx:1607-1611`, `packages/app/src/components/welcome-screen.tsx:48-53`), action button labels in tight components such as the sidebar callout actions (`packages/app/src/components/sidebar-callout.tsx:218-221`), and inline data emphasis on dense metadata rows (`packages/app/src/components/git-diff-pane.tsx:2322-2327`, `packages/app/src/components/file-explorer-pane.tsx:1115-1122`).
 - **Content** uses `fontWeight.normal`. This applies to settings rows (`packages/app/src/styles/settings.ts`), sidebar primary list-item titles (`packages/app/src/components/sidebar-workspace-list.tsx:2680-2686`, `packages/app/src/components/agent-list.tsx:572-578`), `<Button>` text (`packages/app/src/components/ui/button.tsx:80-84`), `<StatusBadge>` text (`packages/app/src/components/ui/status-badge.tsx:56-60`), and `<SidebarCallout>` titles (`packages/app/src/components/sidebar-callout.tsx:175-180`).
 
 The rule, condensed: text that _names_ a surface or a group is `medium`. Text that lives _inside_ a surface or a group is `normal`. Top-of-screen titles are `<ScreenTitle>`, which is lighter still.
@@ -102,7 +102,7 @@ Five primitives. The pick is determined by option count, the need to search, and
 
 `<ContextMenu>` is for right-click and long-press on a target. The row is the trigger; there is no visible affordance. Used for incidental actions on workspace rows in the sidebar (`packages/app/src/components/sidebar-workspace-list.tsx`).
 
-`<AdaptiveModalSheet>` is for a focused task. Multi-field forms (`packages/app/src/components/add-host-modal.tsx`, `packages/app/src/components/pair-link-modal.tsx`, `packages/app/src/components/project-picker-modal.tsx`), confirmations with detail, anything that earns a backdrop. Bottom sheet on compact, centered card on desktop. Raw `Modal` is wrong for any of these.
+`<AdaptiveModalSheet>` is for a focused task. Multi-field forms (`packages/app/src/hosts/add-host/internal/add-host-modal.tsx`, `packages/app/src/hosts/add-host/internal/pair-link-modal.tsx`, `packages/app/src/components/project-picker-modal.tsx`), confirmations with detail, anything that earns a backdrop. Bottom sheet on compact, centered card on desktop. Raw `Modal` is wrong for any of these.
 
 `<AdaptiveModalSheet>` owns the presentation. Its content inset — the gutter that puts sheet content on the same rails as the sheet header — and compact bottom safe-area padding are the sheet's, not the caller's. A caller declares layout intent through `contentStyle` and never branches on form factor to add its own margins. If a sheet's first snap point is shorter than its header, content, and safe-area clearance, raise that snap point rather than moving the sheet container.
 
@@ -114,7 +114,7 @@ Three themes is `DropdownMenu`. Thirty hosts is `Combobox`. A label and a value
 
 ## 7. Density and rhythm
 
-Settings detail pages, the projects detail page, and any list+detail content sit inside a centered, max-width 720 column (`packages/app/src/screens/settings-screen.tsx`, `packages/app/src/screens/projects-screen.tsx`). Lines stay readable, the eye does not have to track wide horizontal distances. Form modals carry their own narrower content frame (`packages/app/src/components/add-host-modal.tsx`).
+Settings detail pages, the projects detail page, and any list+detail content sit inside a centered, max-width 720 column (`packages/app/src/screens/settings-screen.tsx`, `packages/app/src/screens/projects-screen.tsx`). Lines stay readable, the eye does not have to track wide horizontal distances. Form modals carry their own narrower content frame (`packages/app/src/hosts/add-host/internal/add-host-modal.tsx`).
 
 Workspace and chat surfaces use the full width — these are working surfaces, not reading surfaces. The composer carries `MAX_CONTENT_WIDTH` from `packages/app/src/constants/layout.ts` to keep lines readable while letting the workspace pane fill the rest.
 
@@ -278,7 +278,7 @@ New status pills use `<StatusBadge>`. Identity, shortcut, and interactive link b
 | List+detail (compact stack, desktop sidebar+pane)   | `packages/app/src/screens/settings-screen.tsx`, `packages/app/src/screens/projects-screen.tsx`                                                                                                                                                                                                           |
 | Detail card+row                                     | `packages/app/src/screens/settings/host-page.tsx`, `packages/app/src/screens/settings/providers-section.tsx`                                                                                                                                                                                             |
 | Section grouping inside a card list                 | `packages/app/src/screens/settings/settings-section.tsx`                                                                                                                                                                                                                                                 |
-| Form modal (label + input fields, primary + cancel) | `packages/app/src/components/add-host-modal.tsx`, `packages/app/src/components/pair-link-modal.tsx`, `packages/app/src/components/project-picker-modal.tsx`                                                                                                                                              |
+| Form modal (label + input fields, primary + cancel) | `packages/app/src/hosts/add-host/internal/add-host-modal.tsx`, `packages/app/src/hosts/add-host/internal/pair-link-modal.tsx`, `packages/app/src/components/project-picker-modal.tsx`                                                                                                                    |
 | Destructive confirmation                            | `confirmDialog` invoked from `packages/app/src/screens/settings/host-page.tsx:541-547`                                                                                                                                                                                                                   |
 | Centered hero / first-run                           | `packages/app/src/components/welcome-screen.tsx`                                                                                                                                                                                                                                                         |
 | Sidebar list (workspaces, hosts)                    | `packages/app/src/components/sidebar-workspace-list.tsx`, `packages/app/src/components/left-sidebar.tsx`                                                                                                                                                                                                 |

docs/expo-router.md

@@ -58,6 +58,12 @@ restore the same workspace and could repeat the crash.
 
 ## App-Wide Route Hops
 
+Keep Add host in `hosts/add-host`, opened through `useAddHost()`. It is an in-place
+flow; callers choose what happens after success. Settings opts into the new host’s
+Overview. Do not send callers to Settings with an `addHost` query parameter: a
+retained route replays that request when appearance changes remount its content.
+The flow provider and sheet host stay outside appearance keys so open drafts survive.
+
 When app-wide routes such as `/new`, `/settings`, or `/sessions` navigate back
 into a host workspace, use `navigateToWorkspace()`. Do not make the caller
 branch on its current route.

docs/plugins.md

@@ -357,9 +357,27 @@ keys are stored under a `param.` prefix; plugins never see it and may use any ke
 `openScreen` validates its input once (`parsePluginOpenScreenInput`); code past it trusts the
 params.
 
-RPC contracts validate inputs and outputs in both the app and plugin subprocess. `useRpc` returns a
-typed async function. Use the host-provided `@tanstack/react-query` for request state and caching;
-Paseo gives each plugin installation its own query client.
+RPC and subscription contracts validate inputs, outputs, and events in both the app and plugin
+subprocess. `useRpc` returns a typed async function. Use the host-provided `@tanstack/react-query`
+for request state and caching; Paseo gives each plugin installation its own query client.
+
+A subscription is a session-owned observation (`plugin-rpc` delivery family): the session that
+subscribed owns its lifetime, so release, disconnect, plugin stop, and reload need no plugin code.
+Each subscriber gets its own handler call in the subprocess; there is no fan-out or replay. The
+runtime buffers pushes until the session has sent `plugin.rpc.subscribe.response`, so a client
+never sees an event for an unknown subscription. The app installation's lifetime aborts every
+subscription its surfaces left open, and a reload replaces the installation, which resubscribes
+mounted hooks.
+
+The byte rule (a top-level `Uint8Array` is binary, a nested one is a validation error) is checked
+once per hop by `assertPluginWireValue`. Bytes ride plugin binary frames, opcodes `0x20`-`0x2f`
+(`packages/protocol/src/binary-frames/plugin.ts`); nothing on the path copies or re-encodes them,
+and `plugin-subscriptions.perf.e2e.test.ts` locks that. Keep it that way: never stringify a plugin
+payload for a log, and the client's bootstrap buffer holds bytes only until the first observer
+attaches. Binary outputs reach only clients that send `pluginBinaryPayloads`. A binary input
+frame (`0x22`) becomes a synthetic `plugin.rpc.invoke.request` and runs through the normal message
+path, so it is authorized like any other invoke. The author contract, including the native upload
+limit, is in [stream events from the daemon](../public-docs/plugins/reference.md#subscriptions).
 
 `usePaseo()` and the handler's `{ paseo }` context expose the same `PaseoApi`: projects,
 workspaces, agents, terminals, providers, and daemon config. They do not expose connection lifecycle.
@@ -374,10 +392,10 @@ changes both `usePaseo()` and `useRpc()` to that host's installation. An offline
 installation. A server handler owns an IPC-backed daemon session for the life of its subprocess.
 Use plugin RPC for plugin-specific backend behavior that is not a normal Paseo operation.
 
-Host handles and host-targeted clients are owned by `packages/app/src/plugins/hosts`. Its `projectHost` is the secret boundary; host target input uses the shared `parseHostTarget` grammar. Per-installation
+Host-targeted clients and discovery are owned by `packages/app/src/plugins/hosts`, with per-installation
 bindings supplied by the bundle loader. Bind the imperative getter to that installation; do not
 resolve ownership through a mutable current-plugin global. Keep observation ownership in this module
-and transport ownership in the app host runtime. See the [public host API contract](../public-docs/plugins/reference.md#hosts).
+and transport ownership in the app host runtime. See the [public host API contract](../public-docs/plugins/reference.md#discover-hosts-and-target-another-host).
 
 Each subprocess gets an exclusively owned `plugin:<id>` session. That identity is reserved from
 normal clients, never resumes another session, and is cleaned immediately on exit without reconnect
@@ -396,7 +414,7 @@ in-memory bundles usable, and a later catalog retries persistence.
 
 When the same plugin contribution exists on multiple hosts, Paseo shows it once in the sidebar and
 adds a host picker to the screen header. The selected host supplies the bundle, RPC transport, and
-query cache. Explicit SDK targets follow the [host API contract](../public-docs/plugins/reference.md#hosts).
+query cache. Explicit SDK targets follow the [host API contract](../public-docs/plugins/reference.md#discover-hosts-and-target-another-host).
 
 Workspace panels, Command Center items, and client slash commands are client contributions. The
 daemon transports their compiled bundle without interpreting placement or callbacks. Panel props

packages/app/e2e/browser/add-project-flow.spec.ts

@@ -5,6 +5,7 @@ import path from "node:path";
 import { test, expect } from "../support/fixtures";
 import {
   addProjectFlow,
+  chooseAddHostFromProjectFlow,
   addProjectFlowBack,
   addProjectFlowHost,
   addProjectFlowInput,
@@ -19,6 +20,7 @@ import {
 } from "../support/helpers/add-project-flow";
 import { gotoAppShell } from "../support/helpers/app";
 import {
+  disconnectAllHostsAndReload,
   addConnectedHostAndReload,
   addConnectedHostsAndReload,
   addOfflineHostAndReload,
@@ -69,6 +71,19 @@ async function expectProjectHasNoWorkspaces(projectId: string): Promise<void> {
 test.describe("Add Project command-center flow", () => {
   test.describe.configure({ timeout: 180_000 });
 
+  test("Add host replaces the project dialog when no hosts are connected", async ({ page }) => {
+    await gotoAppShell(page);
+    await disconnectAllHostsAndReload(page);
+    await openAddProjectHostSelection(page);
+    const originalUrl = page.url();
+    await chooseAddHostFromProjectFlow(page);
+    await expect(addProjectFlow(page)).toBeHidden();
+    await expect(
+      page.getByRole("button", { name: "Direct connection", exact: true }),
+    ).toBeVisible();
+    await expect(page).toHaveURL(originalUrl);
+  });
+
   test("method selection shows the daemon's available project sources without search", async ({
     page,
   }) => {

packages/app/e2e/browser/file-explorer-context-actions.spec.ts

@@ -294,10 +294,17 @@ test("creates, renames, copies, and deletes entries through the file explorer",
 
   await entry("renamed.txt").click({ button: "right" });
   const deleteAction = page.getByTestId(/file-explorer-row-\d+-delete$/);
-  const deleteLabelColor = await deleteAction
-    .getByText("Delete", { exact: true })
-    .evaluate((element) => getComputedStyle(element).color);
-  await expect(deleteAction.locator("svg")).toHaveCSS("stroke", deleteLabelColor);
+  await expect
+    .poll(async () => {
+      const labelColor = await deleteAction
+        .getByText("Delete", { exact: true })
+        .evaluate((element) => getComputedStyle(element).color);
+      const iconColor = await deleteAction
+        .locator("svg")
+        .evaluate((element) => getComputedStyle(element).stroke);
+      return labelColor !== "" && iconColor === labelColor;
+    })
+    .toBe(true);
   const cancelledConfirmation = new Promise<string>((resolve) => {
     page.once("dialog", async (dialog) => {
       const message = dialog.message();

packages/app/e2e/browser/new-workspace-entry.spec.ts

@@ -122,10 +122,14 @@ test.describe("New workspace entry points", () => {
       });
       const hostTrigger = page.getByTestId("host-picker-trigger");
       await expect(hostTrigger).toContainText("localhost", { timeout: 30_000 });
+      const originalUrl = page.url();
       await hostTrigger.click();
       await expect(page.getByTestId("new-workspace-host-picker-add-host")).toBeVisible();
       await page.getByTestId("new-workspace-host-picker-add-host").click();
-      await expect(page).toHaveURL(/\/settings\/general\?addHost=/);
+      await expect(
+        page.getByRole("button", { name: "Direct connection", exact: true }),
+      ).toBeVisible();
+      await expect(page).toHaveURL(originalUrl);
     } finally {
       await seeded.cleanup();
     }

packages/app/e2e/browser/plugin-subscription-examples.spec.ts

@@ -0,0 +1,79 @@
+import { writeFile } from "node:fs/promises";
+import path from "node:path";
+import { expect, test, type Page } from "../support/fixtures";
+import { gotoAppShell } from "../support/helpers/app";
+import { openCommandCenter } from "../support/helpers/command-center";
+import { connectNewWorkspaceDaemonClient } from "../support/helpers/new-workspace";
+import { copyPluginExample } from "../support/helpers/plugin-fixture";
+import { seedWorkspace, type SeededWorkspace } from "../support/helpers/seed-client";
+import { getServerId } from "../support/helpers/server-id";
+import {
+  switchWorkspaceViaSidebar,
+  waitForWorkspaceInSidebar,
+} from "../support/helpers/workspace-ui";
+
+async function runCommand(page: Page, title: string): Promise<void> {
+  const panel = await openCommandCenter(page);
+  await panel.getByTestId("command-center-input").fill(title);
+  await panel.getByRole("button", { name: title, exact: true }).click();
+  await expect(panel).not.toBeVisible();
+}
+
+/** Installs a plugin example, opens a seeded workspace, and runs `exercise` against them. */
+async function withExample(
+  page: Page,
+  example: { name: string; id: string },
+  exercise: (workspace: SeededWorkspace) => Promise<void>,
+): Promise<void> {
+  const client = await connectNewWorkspaceDaemonClient({ ownProjects: false });
+  const previous = await client.getDaemonConfig();
+  const copy = await copyPluginExample(example.name);
+  const workspace = await seedWorkspace({ repoPrefix: `${example.name}-` });
+  try {
+    await client.patchDaemonConfig({ pluginsEnabled: true });
+    await client.installDirectoryPlugin(copy.directory);
+    await page.setViewportSize({ width: 1280, height: 800 });
+    await gotoAppShell(page);
+    const target = { serverId: getServerId(), workspaceId: workspace.workspaceId };
+    await waitForWorkspaceInSidebar(page, target);
+    await switchWorkspaceViaSidebar({ page, ...target });
+    await exercise(workspace);
+  } finally {
+    try {
+      await client.removePlugin(example.id);
+    } finally {
+      await client.patchDaemonConfig({ pluginsEnabled: previous.config.pluginsEnabled });
+      await workspace.cleanup();
+      await client.close();
+      await copy.cleanup();
+    }
+  }
+}
+
+test.describe("plugin subscriptions", () => {
+  test.describe.configure({ timeout: 180_000 });
+
+  test("a panel follows events the daemon pushes as files change", async ({ page }) => {
+    await withExample(page, { name: "diff-watch", id: "diff-watch" }, async (workspace) => {
+      await runCommand(page, "Open live changes");
+      await expect(page.getByText("No changes", { exact: true })).toBeVisible();
+
+      await writeFile(path.join(workspace.repoPath, "pushed.txt"), "from the test\n");
+      await expect(page.getByText("1 file changed", { exact: true })).toBeVisible();
+      await expect(page.getByText("pushed.txt", { exact: true })).toBeVisible();
+    });
+  });
+
+  test("a panel plays streamed bytes and sends bytes back", async ({ page }) => {
+    await withExample(page, { name: "media-stream", id: "media-stream" }, async () => {
+      await runCommand(page, "Open media stream");
+      await expect(page.getByText("live", { exact: true })).toBeVisible();
+      await expect(page.getByText(/^[1-9]\d* video frames/)).toBeVisible();
+
+      await page.getByRole("button", { name: "Send this frame back", exact: true }).click();
+      await expect(
+        page.getByText(/^The daemon received [1-9]\d* bytes, sha256 [0-9a-f]{12}$/),
+      ).toBeVisible();
+    });
+  });
+});

packages/app/e2e/browser/question-prompt-pagination.spec.ts

@@ -108,10 +108,7 @@ test.describe("Question option text", () => {
     }
   });
 
-  test("selecting description text never answers, and the label still does", async ({
-    page,
-    context,
-  }) => {
+  test("selecting description text keeps the question open", async ({ page, context }) => {
     test.setTimeout(180_000);
     const { session, card } = await openLinkedQuestions(page, context);
     try {
@@ -120,16 +117,13 @@ test.describe("Question option text", () => {
 
       await dragAcross(page, description);
       await expect.poll(() => selectedText(page)).toBe(DONE_DESCRIPTION);
-      await expectChecked(done, false);
-
       await description.getByText("Logs are at", { exact: false }).dblclick({
         position: { x: 4, y: 4 },
       });
       await expect.poll(() => selectedText(page)).toBe("Logs");
       await expectCurrentQuestion(page, { index: 1, total: 2, question: LINKED_QUESTION });
-      await expectChecked(done, false);
-
-      await done.getByText("Done", { exact: true }).click();
+      await expectChecked(done, true);
+      await continueToNextQuestion(page);
       await expectCurrentQuestion(page, { index: 2, total: 2, question: CHECKS_QUESTION });
       await openQuestion(page, { index: 1, total: 2 });
       await expectChecked(done, true);
@@ -138,11 +132,17 @@ test.describe("Question option text", () => {
     }
   });
 
-  test("double-clicking a single-select label answers once", async ({ page, context }) => {
+  test("double-clicking a single-select label selects once without advancing", async ({
+    page,
+    context,
+  }) => {
     test.setTimeout(180_000);
     const { session, card } = await openLinkedQuestions(page, context);
     try {
       await card.getByRole("radio", { name: "Done" }).getByText("Done", { exact: true }).dblclick();
+      await expectCurrentQuestion(page, { index: 1, total: 2, question: LINKED_QUESTION });
+      await expectChecked(card.getByRole("radio", { name: "Done" }), true);
+      await continueToNextQuestion(page);
 
       await expectCurrentQuestion(page, { index: 2, total: 2, question: CHECKS_QUESTION });
       await expectChecked(card.getByRole("checkbox", { name: "Lint" }), false);
@@ -154,14 +154,12 @@ test.describe("Question option text", () => {
     }
   });
 
-  test("multi-select description links and selection leave the option unchanged", async ({
-    page,
-    context,
-  }) => {
+  test("multi-select descriptions support links and text selection", async ({ page, context }) => {
     test.setTimeout(180_000);
     const { session, card } = await openLinkedQuestions(page, context);
     try {
       await card.getByRole("radio", { name: "Done" }).getByText("Done", { exact: true }).click();
+      await continueToNextQuestion(page);
       await expectCurrentQuestion(page, { index: 2, total: 2, question: CHECKS_QUESTION });
 
       const lint = card.getByRole("checkbox", { name: "Lint" });
@@ -177,18 +175,16 @@ test.describe("Question option text", () => {
 
       await dragAcross(page, description);
       await expect.poll(() => selectedText(page)).toBe(LINT_DESCRIPTION);
-      await expectChecked(lint, false);
-
       await description.getByText("Rules:", { exact: false }).dblclick({
         position: { x: 4, y: 4 },
       });
       await expect.poll(() => selectedText(page)).toBe("Rules");
-      await expectChecked(lint, false);
+      await expectChecked(lint, true);
 
       await typecheck.getByText("Typecheck", { exact: true }).dblclick();
       await expectChecked(typecheck, true);
       await lint.getByText("Lint", { exact: true }).click();
-      await expectChecked(lint, true);
+      await expectChecked(lint, false);
     } finally {
       await session.cleanup();
     }
@@ -268,6 +264,7 @@ test.describe("Question prompt pagination", () => {
       await expectQuestionHidden(page, SUCCESS_QUESTION);
 
       await chooseQuestionOption(page, "App");
+      await continueToNextQuestion(page);
       await expectCurrentQuestion(page, {
         index: 2,
         total: TOTAL_QUESTIONS,
@@ -288,6 +285,7 @@ test.describe("Question prompt pagination", () => {
         preview: 'flags.enabled("new-surface")',
       });
       await chooseQuestionOption(page, "Behind feature flag");
+      await continueToNextQuestion(page);
       await expectCurrentQuestion(page, {
         index: 3,
         total: TOTAL_QUESTIONS,
@@ -466,7 +464,9 @@ retryTest(
     retryTest.setTimeout(180_000);
     const card = page.getByTestId("question-form-card");
     await chooseQuestionOption(page, "App");
+    await continueToNextQuestion(page);
     await chooseQuestionOption(page, "Behind feature flag");
+    await continueToNextQuestion(page);
     await fillQuestionAnswer(page, {
       question: SUCCESS_QUESTION,
       answer: "Preserve my answers after a failed submission.",
@@ -520,7 +520,9 @@ retryTest(
     const card = page.getByTestId("question-form-card");
     questionClient.releaseFirstResponse();
     await chooseQuestionOption(page, "App");
+    await continueToNextQuestion(page);
     await chooseQuestionOption(page, "Behind feature flag");
+    await continueToNextQuestion(page);
     await fillQuestionAnswer(page, {
       question: SUCCESS_QUESTION,
       answer: "Start with the internal team.",

packages/app/e2e/browser/settings-host-page.spec.ts

@@ -1,3 +1,8 @@
+import {
+  openGlobalNewWorkspaceComposer,
+  fillNewWorkspaceDraft,
+  expectNewWorkspaceDraft,
+} from "../support/helpers/new-workspace";
 import { readFile, mkdir, rename, rm } from "node:fs/promises";
 import path from "node:path";
 import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
@@ -273,3 +278,71 @@ test("restart recovery host controls persist the opt-out and custom prompt", asy
   await expectRestartRecoveryPrompt(page, "Continue the interrupted work.");
   await editRestartRecoveryPrompt(page, "Resume working.");
 });
+
+test("sidebar Add host preserves its caller and stays closed after theme changes", async ({
+  page,
+}) => {
+  await gotoAppShell(page);
+  await expect(page).toHaveURL(/\/open-project$/);
+  const originalUrl = page.url();
+  await openSidebarAddHost(page);
+  await expect(page).toHaveURL(originalUrl);
+  await closeAddHostAndChangeTheme(page);
+  await expect(page.getByRole("button", { name: "Direct connection", exact: true })).toBeHidden();
+  await expect(page).toHaveURL(originalUrl);
+});
+
+async function openSidebarAddHost(page: import("@playwright/test").Page) {
+  await page.getByRole("button", { name: "Hosts", exact: true }).click();
+  await page.getByRole("button", { name: "Add host", exact: true }).click();
+  await expect(page.getByRole("button", { name: "Direct connection", exact: true })).toBeVisible();
+}
+
+async function closeAddHostAndChangeTheme(page: import("@playwright/test").Page) {
+  await page.getByRole("button", { name: "Close", exact: true }).click();
+  await expect(page.getByRole("button", { name: "Direct connection", exact: true })).toBeHidden();
+  await page.keyboard.press("Control+Alt+t");
+}
+
+test("sidebar Add host completes without navigating", async ({ page }) => {
+  await gotoAppShell(page);
+  await expect(page).toHaveURL(/\/open-project$/);
+  const originalUrl = page.url();
+  await openSidebarAddHost(page);
+  await connectToTestHost(page);
+  await expect(page).toHaveURL(originalUrl);
+  await expect(page.getByRole("button", { name: "Hosts", exact: true })).toBeVisible();
+});
+
+test("Settings Add host opens the saved host Overview", async ({ page }) => {
+  await gotoAppShell(page);
+  await openSettings(page);
+  await addDirectHostFromSettings(page, { host: "127.0.0.1", port: Number(getE2EDaemonPort()) });
+  await expectSettingsHeader(page, "Overview");
+  await expect(page).toHaveURL(new RegExp(`/settings/hosts/${getServerId()}/host$`));
+});
+
+test("New workspace Add host preserves the prompt after connecting", async ({ page }) => {
+  await gotoAppShell(page);
+  await openGlobalNewWorkspaceComposer(page);
+  await fillNewWorkspaceDraft(page, "Keep this unfinished prompt while I add a host.");
+  const originalUrl = page.url();
+  await openNewWorkspaceAddHost(page);
+  await expect(page).toHaveURL(originalUrl);
+  await connectToTestHost(page);
+  await expect(page).toHaveURL(originalUrl);
+  await expectNewWorkspaceDraft(page, "Keep this unfinished prompt while I add a host.");
+});
+
+async function openNewWorkspaceAddHost(page: import("@playwright/test").Page) {
+  await page.getByTestId("host-picker-trigger").click();
+  await page.getByRole("button", { name: "Add host", exact: true }).click();
+}
+
+async function connectToTestHost(page: import("@playwright/test").Page) {
+  await page.getByRole("button", { name: "Direct connection", exact: true }).click();
+  await page.getByRole("textbox", { name: "Host", exact: true }).fill("127.0.0.1");
+  await page.getByRole("textbox", { name: "Port", exact: true }).fill(String(getE2EDaemonPort()));
+  await page.getByRole("button", { name: "Connect", exact: true }).click();
+  await expect(page.getByTestId("add-host-modal")).toBeHidden({ timeout: 30_000 });
+}

packages/app/e2e/support/helpers/add-project-flow.ts

@@ -113,3 +113,7 @@ export async function expectAddProjectResultVisible(page: Page, text: string): P
     })
     .toBe(true);
 }
+
+export async function chooseAddHostFromProjectFlow(page: Page): Promise<void> {
+  await page.getByRole("button", { name: /Add host.*No connected hosts/ }).click();
+}

packages/app/e2e/support/helpers/hosts.ts

@@ -273,3 +273,25 @@ export async function reloadPreservingHostRegistry(page: Page): Promise<void> {
   );
   await page.reload();
 }
+
+export async function disconnectAllHostsAndReload(page: Page): Promise<void> {
+  await page.evaluate(
+    ({ registryKey, nonceKey, disableSeedKey }) => {
+      const nonce = localStorage.getItem(nonceKey);
+      if (!nonce) throw new Error("Expected the e2e seed nonce");
+      const hosts = JSON.parse(localStorage.getItem(registryKey) ?? "[]");
+      for (const host of hosts) {
+        host.connections = [{ id: "offline", type: "directTcp", endpoint: "127.0.0.1:59999" }];
+        host.preferredConnectionId = "offline";
+      }
+      localStorage.setItem(registryKey, JSON.stringify(hosts));
+      localStorage.setItem(disableSeedKey, nonce);
+    },
+    {
+      registryKey: REGISTRY_KEY,
+      nonceKey: SEED_NONCE_KEY,
+      disableSeedKey: DISABLE_DEFAULT_SEED_ONCE_KEY,
+    },
+  );
+  await page.reload();
+}

packages/app/src/agent-stream/presentation.test.ts

@@ -69,6 +69,9 @@ function installProbe(
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
   };
 }
 

packages/app/src/app/_layout.tsx

@@ -1,3 +1,4 @@
+import { AddHostProvider, AddHostFlowHost } from "@/hosts/add-host";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
 import { useActiveWorkspaceSelection } from "@/stores/navigation-active-workspace-store";
 import { useIsExplorerSidebarOpen } from "@/workspace-tabs/explorer-sidebar";
@@ -465,6 +466,7 @@ function AppContainer({ children, chromeEnabled: chromeEnabledOverride }: AppCon
   const surface = (
     <View style={layoutStyles.surfaceFill}>
       {workspaceChrome}
+      <AddHostFlowHost />
       <AppearanceStyleBoundary>
         {!isCompactLayout && appChromeLayout.sidebarToggleOwner === "window" ? (
           <WindowChromeRegion corners="top-left">
@@ -805,7 +807,6 @@ function RootStack() {
         <Stack.Screen name="open-project" />
         <Stack.Screen name="sessions" />
         <Stack.Screen name="schedules" />
-        <Stack.Screen name="pair-scan" />
       </Stack.Protected>
       <Stack.Screen name="h/[serverId]" />
       <Stack.Screen name="settings/hosts/[serverId]/index" />
@@ -890,11 +891,13 @@ function RootAppTree() {
     <GestureHandlerRootView style={flexStyle}>
       <View style={layoutStyles.surfaceFill}>
         <LucideProvider strokeWidth={ICON_STROKE_WIDTH}>
-          <RootProviders>
-            <RuntimeProviders>
-              <AppShell />
-            </RuntimeProviders>
-          </RootProviders>
+          <AddHostProvider>
+            <RootProviders>
+              <RuntimeProviders>
+                <AppShell />
+              </RuntimeProviders>
+            </RootProviders>
+          </AddHostProvider>
         </LucideProvider>
       </View>
     </GestureHandlerRootView>

packages/app/src/app/settings/[section].tsx

@@ -35,10 +35,9 @@ function SettingsDaemonRedirect() {
 }
 
 export default function SettingsSectionRoute() {
-  const params = useLocalSearchParams<{ section?: string; addHost?: string }>();
+  const params = useLocalSearchParams<{ section?: string }>();
   const rawSection = typeof params.section === "string" ? params.section : "";
   const section: SettingsSectionSlug = isSettingsSectionSlug(rawSection) ? rawSection : "general";
-  const openAddHostIntent = typeof params.addHost === "string" ? params.addHost : null;
   const view = useMemo(() => ({ kind: "section" as const, section }), [section]);
 
   // COMPAT(settingsDaemonRedirect): added 2026-07-08, remove after 2027-01-08.
@@ -50,5 +49,5 @@ export default function SettingsSectionRoute() {
     );
   }
 
-  return <SettingsScreen view={view} openAddHostIntent={openAddHostIntent} />;
+  return <SettingsScreen view={view} />;
 }

packages/app/src/components/add-project-flow.tsx

@@ -1,3 +1,4 @@
+import { useAddHost } from "@/hosts/add-host";
 import { Modal } from "@/components/ui/modal";
 import { usePanelStore } from "@/stores/panel-store";
 import { getHostRuntimeStore } from "@/runtime/host-runtime";
@@ -92,7 +93,7 @@ import { useRecommendedProjectPaths } from "@/stores/session-store-hooks";
 import type { AddProjectFlowRequest } from "@/stores/add-project-flow-store";
 import type { Theme } from "@/styles/theme";
 import { shortenPath } from "@/utils/shorten-path";
-import { buildNewWorkspaceRoute, buildSettingsAddHostRoute } from "@/utils/host-routes";
+import { buildNewWorkspaceRoute } from "@/utils/host-routes";
 
 interface AddProjectFlowProps {
   request: AddProjectFlowRequest;
@@ -325,6 +326,7 @@ function setPageStatus(
 // The product flow is intentionally one cohesive page-stack state machine.
 // eslint-disable-next-line complexity
 export function AddProjectFlow({ request, onClose }: AddProjectFlowProps) {
+  const addHost = useAddHost();
   const hosts = useHosts();
   const hostIds = useMemo(() => hosts.map((host) => host.serverId), [hosts]);
   const connectionStatuses = useHostRuntimeConnectionStatuses(hostIds);
@@ -616,9 +618,9 @@ export function AddProjectFlow({ request, onClose }: AddProjectFlowProps) {
           icon: Plus,
           testID: "add-project-flow-add-host",
           select: () => {
+            // The native project Modal must release its window before the root sheet opens.
             onClose();
-            usePanelStore.getState().showMobileAgent();
-            router.push(buildSettingsAddHostRoute(Date.now()));
+            addHost();
           },
         });
       }
@@ -717,6 +719,7 @@ export function AddProjectFlow({ request, onClose }: AddProjectFlowProps) {
     directoryPaths,
     githubQuery.data,
     host,
+    addHost,
     onClose,
     openAddedProject,
     page,

packages/app/src/components/hosts/host-picker.browser.test.tsx

@@ -1,42 +0,0 @@
-import React, { act } from "react";
-import { createRoot } from "react-dom/client";
-import { expect, it } from "vitest";
-import { HostPickerOption } from "./host-picker";
-
-const actions: string[] = [];
-function select() {
-  actions.push("select");
-}
-function openSettings() {
-  actions.push("settings");
-}
-
-it("keeps host selection and settings as separate accessible buttons", () => {
-  const container = document.createElement("div");
-  document.body.appendChild(container);
-  const root = createRoot(container);
-  actions.length = 0;
-  act(() =>
-    root.render(
-      <HostPickerOption
-        serverId="host-a"
-        label="Host A"
-        showActiveConnection={false}
-        active={false}
-        onPress={select}
-        onOpenHostSettings={openSettings}
-      />,
-    ),
-  );
-  const host = container.querySelector('button[aria-label="Host A"]');
-  const settings = container.querySelector('button[aria-label="Open Host A settings"]');
-  expect(host).not.toBeNull();
-  expect(settings).not.toBeNull();
-  expect(host?.contains(settings!)).toBe(false);
-  act(() => (settings as HTMLElement).click());
-  expect(actions).toEqual(["settings"]);
-  act(() => (host as HTMLElement).click());
-  expect(actions).toEqual(["settings", "select"]);
-  act(() => root.unmount());
-  container.remove();
-});

packages/app/src/components/hosts/host-picker.tsx

@@ -8,7 +8,6 @@ import { Combobox, ComboboxItem, type ComboboxProps } from "@/components/ui/comb
 import { useLocalDaemonServerId } from "@/hooks/use-is-local-daemon";
 import { useHostRuntimeSnapshot, type ActiveConnection } from "@/runtime/host-runtime";
 import { orderHostsLocalFirst } from "@/types/host-connection";
-import { isWeb } from "@/constants/platform";
 import {
   ADD_HOST_OPTION_ID,
   ALL_HOSTS_OPTION_ID,
@@ -90,33 +89,35 @@ export function HostPickerOption({
   );
   const trailingSlot = useMemo(() => {
     if (!onOpenHostSettings) return undefined;
-    return <View style={styles.settingsSlot} />;
-  }, [onOpenHostSettings]);
+    return (
+      <Pressable
+        onPress={handleSettingsPress}
+        hitSlop={8}
+        accessibilityRole="button"
+        accessibilityLabel={`Open ${label} settings`}
+      >
+        <Settings size={theme.iconSize.sm} color={theme.colors.foregroundMuted} />
+      </Pressable>
+    );
+  }, [
+    handleSettingsPress,
+    label,
+    onOpenHostSettings,
+    theme.colors.foregroundMuted,
+    theme.iconSize.sm,
+  ]);
 
   return (
-    <View style={styles.optionContainer}>
-      <ComboboxItem
-        label={label}
-        description={connectionLabel}
-        leadingSlot={leadingSlot}
-        trailingSlot={trailingSlot}
-        selected={selected}
-        active={active}
-        onPress={onPress}
-        testID={testID}
-      />
-      {onOpenHostSettings ? (
-        <Pressable
-          style={styles.settingsAction}
-          onPress={handleSettingsPress}
-          hitSlop={8}
-          accessibilityRole="button"
-          accessibilityLabel={`Open ${label} settings`}
-        >
-          <Settings size={theme.iconSize.sm} color={theme.colors.foregroundMuted} />
-        </Pressable>
-      ) : null}
-    </View>
+    <ComboboxItem
+      label={label}
+      description={connectionLabel}
+      leadingSlot={leadingSlot}
+      trailingSlot={trailingSlot}
+      selected={selected}
+      active={active}
+      onPress={onPress}
+      testID={testID}
+    />
   );
 }
 
@@ -318,15 +319,6 @@ export function HostPicker({
 }
 
 const styles = StyleSheet.create((theme) => ({
-  optionContainer: { position: "relative" },
-  settingsSlot: { width: theme.iconSize.sm, height: theme.iconSize.sm },
-  settingsAction: {
-    position: "absolute",
-    right: theme.spacing[3] + (isWeb ? 0 : theme.spacing[1]),
-    top: 0,
-    bottom: 0,
-    justifyContent: "center",
-  },
   statusDotSlot: {
     width: theme.iconSize.sm,
     height: theme.iconSize.sm,

packages/app/src/components/left-sidebar.tsx

@@ -1,3 +1,4 @@
+import { useAddHost } from "@/hosts/add-host";
 import { router } from "expo-router";
 import {
   CircleGauge,
@@ -62,7 +63,7 @@ import { usePanelStore } from "@/stores/panel-store";
 import { useOwnsWindowChromeCorner, WindowChromeSafeArea } from "@/utils/desktop-window";
 import { useCloseAgentListGesture } from "@/mobile-panels/gestures";
 import { MobilePanelOverlay } from "@/mobile-panels/presentation";
-import { buildSettingsAddHostRoute, buildSettingsRoute } from "@/utils/host-routes";
+import { buildSettingsRoute } from "@/utils/host-routes";
 import { openHostOverview } from "@/navigation/settings-navigation";
 import { UsageSidebarItem, UsageSidebarRoot, useUsageSummary, useOpenSidebarUsage } from "@/usage";
 import { SidebarAgentListSkeleton } from "./sidebar-agent-list-skeleton";
@@ -177,14 +178,8 @@ export const LeftSidebar = memo(function LeftSidebar({ active }: { active: boole
     router.push(buildSettingsRoute());
   }, []);
 
-  const handleAddHostMobile = useCallback(() => {
-    showMobileAgent();
-    router.push(buildSettingsAddHostRoute(Date.now()));
-  }, [showMobileAgent]);
-
-  const handleAddHostDesktop = useCallback(() => {
-    router.push(buildSettingsAddHostRoute(Date.now()));
-  }, []);
+  const handleAddHostMobile = useAddHost();
+  const handleAddHostDesktop = handleAddHostMobile;
 
   const handleOpenHostSettingsMobile = useCallback(
     (serverId: string) => {

packages/app/src/components/markdown/renderer.test.ts

@@ -130,6 +130,186 @@ it("preserves empty table cells while escaping spoilers in cell text", () => {
   );
 });
 
+it("renders a table directly after a paragraph through the library parser", async () => {
+  const source = "**Notes**\n| Item | Detail |\n| --- | --- |\n| A | one |\n| B | two |";
+  const separated = "**Notes**\n\n| Item | Detail |\n| --- | --- |\n| A | one |\n| B | two |";
+  const flags = { hardSoftBreaks: true, latexMath: false };
+  const expected = await parseMarkdown(separated, flags);
+  expect(expected.children?.map((node) => node.type)).toEqual(["Paragraph", "Table"]);
+  expect(await parseMarkdown(prepareMarkdownSource(source).render(), flags)).toEqual(expected);
+});
+
+it.each([
+  [
+    "a quote",
+    "> Notes\n> | Item |\n> | --- |\n> | A |",
+    "> Notes\n>\n> | Item |\n> | --- |\n> | A |",
+    ["Document", ["Blockquote", "Paragraph", "Table"]],
+  ],
+  [
+    "a list item",
+    "- Notes\n  | Item |\n  | --- |\n  | A |\n- Next",
+    "- Notes\n\n  | Item |\n  | --- |\n  | A |\n- Next",
+    ["Document", ["UnorderedList", ["ListItem", "Paragraph", "Table"], ["ListItem", "Paragraph"]]],
+  ],
+  [
+    "a quoted list item",
+    "> - Notes\n>   | Item |\n>   | --- |\n>   | A |",
+    "> - Notes\n>\n>   | Item |\n>   | --- |\n>   | A |",
+    ["Document", ["Blockquote", ["UnorderedList", ["ListItem", "Paragraph", "Table"]]]],
+  ],
+  [
+    "a quote inside a list item",
+    "- > Notes\n  > | Item |\n  > | --- |\n  > | A |",
+    "- > Notes\n  >\n  > | Item |\n  > | --- |\n  > | A |",
+    ["Document", ["UnorderedList", ["ListItem", ["Blockquote", "Paragraph", "Table"]]]],
+  ],
+  [
+    "aligned columns without outer pipes",
+    "Notes\nItem | Detail\n:--- | ---:\nA | one",
+    "Notes\n\nItem | Detail\n:--- | ---:\nA | one",
+    ["Document", "Paragraph", "Table"],
+  ],
+  [
+    "an entity at the start of a header without outer pipes",
+    "Notes\nAT&T | Detail\n--- | ---\nA | one",
+    "Notes\n\nAT\\&T | Detail\n--- | ---\nA | one",
+    ["Document", "Paragraph", "Table"],
+  ],
+  [
+    "a local image at the start of a header without outer pipes",
+    "Notes\n![Local](assets/a.png) | Detail\n--- | ---\nA | one",
+    "Notes\n\nLocal | Detail\n--- | ---\nA | one",
+    ["Document", "Paragraph", "Table"],
+  ],
+  [
+    "CRLF lines",
+    "Notes\r\n| Item |\r\n| --- |\r\n| A |",
+    "Notes\r\n\r\n| Item |\r\n| --- |\r\n| A |",
+    ["Document", "Paragraph", "Table"],
+  ],
+  [
+    "CR lines",
+    "Notes\r| Item |\r| --- |\r| A |",
+    "Notes\r\r| Item |\r| --- |\r| A |",
+    ["Document", "Paragraph", "Table"],
+  ],
+  [
+    "a quote with CRLF lines",
+    "> Notes\r\n> | Item |\r\n> | --- |\r\n> | A |",
+    "> Notes\r\n>\r\n> | Item |\r\n> | --- |\r\n> | A |",
+    ["Document", ["Blockquote", "Paragraph", "Table"]],
+  ],
+  [
+    "a list item with CRLF lines",
+    "- Notes\r\n  | Item |\r\n  | --- |\r\n  | A |\r\n- Next",
+    "- Notes\r\n\r\n  | Item |\r\n  | --- |\r\n  | A |\r\n- Next",
+    ["Document", ["UnorderedList", ["ListItem", "Paragraph", "Table"], ["ListItem", "Paragraph"]]],
+  ],
+  [
+    "a quote with CR lines",
+    "> Notes\r> | Item |\r> | --- |\r> | A |",
+    "> Notes\r>\r> | Item |\r> | --- |\r> | A |",
+    ["Document", ["Blockquote", "Paragraph", "Table"]],
+  ],
+  [
+    "a list item with CR lines",
+    "- Notes\r  | Item |\r  | --- |\r  | A |\r- Next",
+    "- Notes\r\r  | Item |\r  | --- |\r  | A |\r- Next",
+    ["Document", ["UnorderedList", ["ListItem", "Paragraph", "Table"], ["ListItem", "Paragraph"]]],
+  ],
+  [
+    "a non-interrupting ordered marker with tildes",
+    "Intro\n2. ~~~\n   Notes\n   | A |\n   | --- |\n   | x |",
+    "Intro\n2. ~~~\n   Notes\n\n   | A |\n   | --- |\n   | x |",
+    ["Document", "Paragraph", "Table"],
+  ],
+  [
+    "a non-interrupting ordered marker with backticks",
+    "Notes\n2. ```\n   | Item |\n   | --- |\n   | A |",
+    "Notes\n2. ```\n\n   | Item |\n   | --- |\n   | A |",
+    ["Document", "Paragraph", "Table"],
+  ],
+])("preserves tables after paragraphs in %s", async (_name, source, separated, expected) => {
+  const rendered = prepareMarkdownSource(source).render();
+  expect(rendered).toEqual(separated);
+  const flags = { hardSoftBreaks: true, latexMath: false };
+  function blocks(node: ASTNode): unknown {
+    if (node.type === "Paragraph" || node.type === "Table") return node.type;
+    return [node.type, ...(node.children ?? []).map(blocks)];
+  }
+  expect(blocks(await parseMarkdown(rendered, flags))).toEqual(expected);
+});
+
+it.each([
+  [
+    "a literal backslash",
+    "Notes\\\n| Item |\n| --- |\n| A |",
+    "Notes\\\n\n| Item |\n| --- |\n| A |",
+    "Notes\\",
+  ],
+  [
+    "an entity and literal backslash with LF lines",
+    "AT&T\\\n| Item |\n| --- |\n| A |",
+    "AT\\&T\\\n\n| Item |\n| --- |\n| A |",
+    "AT&T\\",
+  ],
+  [
+    "an entity and literal backslash with CRLF lines",
+    "AT&T\\\r\n| Item |\r\n| --- |\r\n| A |",
+    "AT\\&T\\\r\n\r\n| Item |\r\n| --- |\r\n| A |",
+    "AT&T\\",
+  ],
+  [
+    "an entity and literal backslash with CR lines",
+    "AT&T\\\r| Item |\r| --- |\r| A |",
+    "AT\\&T\\\r\r| Item |\r| --- |\r| A |",
+    "AT&T\\",
+  ],
+])(
+  "preserves paragraph text before an interrupting table in %s",
+  async (_name, source, separated, text) => {
+    const rendered = prepareMarkdownSource(source).render();
+    expect(rendered).toEqual(separated);
+    const tree = await parseMarkdown(rendered, { hardSoftBreaks: true, latexMath: false });
+    expect(tree.children?.map((node) => node.type)).toEqual(["Paragraph", "Table"]);
+    expect(tree.children?.[0]?.children?.map((node) => node.content).join("")).toEqual(text);
+  },
+);
+
+it.each([
+  "```yaml\n---\nkey: value\n---\n```\n",
+  "~~~md\n| Item |\n| --- |\n| A |\n~~~\n",
+  "````md\n```\n| Item |\n| --- |\n```\n`````\n",
+  "> ```md\n> | Item |\n> | --- |\n> ```\n",
+  "> ```md\n> Code\n",
+  "- ```md\n  Code\n",
+  "    ```\n\n",
+  "```not`a-fence\n",
+])("renders a table after a fence without changing its code: %s", async (prefix) => {
+  const table = "| Item |\n| --- |\n| A |";
+  const rendered = prepareMarkdownSource(`${prefix}Notes\n${table}`).render();
+  expect(rendered).toEqual(`${prefix}Notes\n\n${table}`);
+  const tree = await parseMarkdown(rendered, { hardSoftBreaks: true, latexMath: false });
+  expect(tree.children?.slice(-2).map((node) => node.type)).toEqual(["Paragraph", "Table"]);
+});
+
+it.each([
+  "| Item | Detail |\n| --- | --- |\n" + "| A | one |\n".repeat(100),
+  "Notes\n\n| Item | Detail |\n| --- | --- |\n" + "| A | one |\n".repeat(100),
+  "Notes\n\n| Item |\n| --- |\n| A |",
+  "| Item |\n| --- |\n| A |",
+  "```md\nNotes\n| Item |\n| --- |\n| A |\n```",
+  "```yaml\n---\nkey: value\n---\n```",
+  "```yaml\n---\nkey: value",
+  "~~~md\n| Item |\n| --- |\n| A |\n~~~",
+  "````md\n```\n| Item |\n| --- |\n```\n````",
+  "    Notes\n    | Item |\n    | --- |\n    | A |",
+  "Notes\n| Item | Detail |\n| --- |\n| A |",
+])("leaves separated tables and table-like text unchanged: %s", (source) => {
+  expect(prepareMarkdownSource(source).render()).toEqual(source);
+});
+
 it.each([
   "src/components/message.tsx",
   "C:\\repo\\file.ts",

packages/app/src/components/markdown/source.ts

@@ -138,6 +138,10 @@ export function prepareMarkdownSource(
     !source.includes("![") &&
     !source.includes("||") &&
     !source.includes("&") &&
+    // Match content, header, and delimiter lines; quote-only lines count as blank.
+    !/^[\t >]*[^\t >\r\n][^\r\n]*(?:\r\n|\r|\n)[^\r\n]+(?:\r\n|\r|\n)(?=[\t >:|-]*\|)[\t >|]*:?-[-\t :|]*$/m.test(
+      source,
+    ) &&
     !(workspaceRoot && source.includes("]("))
   ) {
     return { images, ...metadata, render: () => source };
@@ -212,11 +216,25 @@ export function prepareMarkdownSource(
       if (lineEnd < end) split(lineEnd);
     }
   }
-  function visit(node: Nodes) {
-    const start = node.position?.start.offset;
-    const end = node.position?.end.offset;
-    if (start !== undefined && end !== undefined) {
+  function visit(node: Nodes, previous?: Nodes) {
+    const position = node.position;
+    if (position?.start.offset !== undefined && position.end.offset !== undefined) {
+      const start = position.start.offset;
+      const end = position.end.offset;
       if (node.type === "paragraph") splitStandaloneImages(node, start, end);
+      if (
+        node.type === "table" &&
+        previous?.type === "paragraph" &&
+        previous.position?.end.line === position.start.line - 1
+      ) {
+        // MD4C only recognizes a table header on the first line of a paragraph.
+        const lineStart =
+          Math.max(source.lastIndexOf("\n", start - 1), source.lastIndexOf("\r", start - 1)) + 1;
+        const newline = source.slice(lineStart - 2, lineStart).replace(/[^\r\n]/g, "");
+        const blank = source.slice(lineStart, start).replace(/[^>]/g, " ").trimEnd();
+        const boundary = lineStart - newline.length;
+        edits.push({ start: boundary, end: lineStart, text: `${newline}${blank}${newline}` });
+      }
       if (node.type === "link") {
         const title = workspaceHoverTitle(node, source.slice(start, end), workspaceRoot);
         if (title !== null)
@@ -244,7 +262,8 @@ export function prepareMarkdownSource(
         if (text !== source.slice(start, end)) edits.push({ start, end, text });
       }
     }
-    if ("children" in node) node.children.forEach(visit);
+    if ("children" in node)
+      node.children.forEach((child, index) => visit(child, node.children[index - 1]));
   }
   visit(getTree());
   return {

packages/app/src/components/question-form-card.browser.test.tsx

@@ -39,7 +39,10 @@ afterEach(() => {
   }
 });
 
-function buildPermission(question: Record<string, unknown>): PendingPermission {
+function buildPermission(
+  question: Record<string, unknown>,
+  following: Record<string, unknown>[] = [],
+): PendingPermission {
   return {
     key: "perm-1",
     agentId: "agent-1",
@@ -48,12 +51,12 @@ function buildPermission(question: Record<string, unknown>): PendingPermission {
       provider: "claude",
       name: "AskUserQuestion",
       kind: "question",
-      input: { questions: [question] },
+      input: { questions: [question, ...following] },
     },
   };
 }
 
-function mountCard(question: Record<string, unknown>) {
+function mountCard(question: Record<string, unknown>, following: Record<string, unknown>[] = []) {
   const onRespond = vi.fn<(response: AgentPermissionResponse) => void>();
   const container = document.createElement("div");
   document.body.appendChild(container);
@@ -61,7 +64,7 @@ function mountCard(question: Record<string, unknown>) {
   act(() =>
     root.render(
       <QuestionFormCard
-        permission={buildPermission(question)}
+        permission={buildPermission(question, following)}
         onRespond={onRespond}
         isResponding={false}
         responseError={null}
@@ -71,10 +74,14 @@ function mountCard(question: Record<string, unknown>) {
   mounted.push({ root, container });
 
   const view = within(container);
-  const optionRole = question.multiSelect ? "checkbox" : "radio";
   const otherInput = () =>
     view.getByRole<HTMLInputElement>("textbox", { name: String(question.question) });
-  const check = (label: string) => act(() => view.getByRole(optionRole, { name: label }).click());
+  const check = (label: string) =>
+    act(() =>
+      (
+        view.queryByRole("radio", { name: label }) ?? view.getByRole("checkbox", { name: label })
+      ).click(),
+    );
   const type = (text: string) => {
     const input = otherInput();
     const valueSetter = Object.getOwnPropertyDescriptor(HTMLInputElement.prototype, "value")?.set;
@@ -90,7 +97,7 @@ function mountCard(question: Record<string, unknown>) {
     if (!response || response.behavior !== "allow") throw new Error("card did not submit");
     return (response.updatedInput as { answers: Record<string, string> }).answers;
   };
-  return { check, type, otherInput, submit, submittedAnswers };
+  return { check, type, otherInput, submit, submittedAnswers, view, onRespond };
 }
 
 const multiSelectQuestion = {
@@ -154,3 +161,31 @@ describe("QuestionFormCard other answers", () => {
     expect(card.submittedAnswers()).toEqual({ Provider: "Codex" });
   });
 });
+
+describe("QuestionFormCard explicit navigation", () => {
+  it("keeps a picked option visible until Next and submits only on Submit", () => {
+    const card = mountCard(singleSelectQuestion, [multiSelectQuestion]);
+    card.check("Codex");
+    expect(card.view.getByRole("radio", { name: "Codex" }).getAttribute("aria-checked")).toBe(
+      "true",
+    );
+    expect(card.onRespond).not.toHaveBeenCalled();
+    act(() => card.view.getByRole("button", { name: "Next" }).click());
+    card.check("Apple");
+    expect(card.onRespond).not.toHaveBeenCalled();
+    card.submit();
+    expect(card.submittedAnswers()).toEqual({ Provider: "Codex", Fruits: "Apple" });
+  });
+
+  it("selects an option when its description is clicked without submitting", () => {
+    const card = mountCard({
+      ...singleSelectQuestion,
+      options: [{ label: "Codex", description: "Use this provider" }],
+    });
+    act(() => card.view.getByText("Use this provider").click());
+    expect(card.view.getByRole("radio", { name: "Codex" }).getAttribute("aria-checked")).toBe(
+      "true",
+    );
+    expect(card.onRespond).not.toHaveBeenCalled();
+  });
+});

packages/app/src/components/question-form-card.tsx

@@ -43,20 +43,16 @@ const IS_WEB = isWeb;
 // drag to the preview's nested scroll, so lines past a cap would be unreachable.
 const OPTION_PREVIEW_MAX_HEIGHT = IS_WEB ? 240 : undefined;
 
-// Web clicks that must not answer: a link in the label, anything in the description, and the
-// second click of a double-click, which would otherwise land on the next question's options.
-function isNonAnsweringClick(event: GestureResponderEvent, description: View | null): boolean {
+// Links are independent actions. Ignore repeat clicks so double-click text selection
+// toggles an option only once.
+function isNonAnsweringClick(event: GestureResponderEvent): boolean {
   if (!IS_WEB) return false;
   const click = event.nativeEvent as unknown as MouseEvent;
   if (click.detail > 1) return true;
   const target = click.target as Element | null;
-  const descriptionElement = description as unknown as Element | null;
-  return Boolean(target?.closest("a") || descriptionElement?.contains(target));
+  return Boolean(target?.closest("a"));
 }
 
-// The description is selectable text, so a touch on it belongs to the text, not the option.
-const claimResponder = () => true;
-
 function getQuestionInputPlaceholder({
   question,
   answerPlaceholder,
@@ -92,10 +88,9 @@ function QuestionOptionRow({
 }: QuestionOptionRowProps) {
   const { theme } = useUnistyles();
 
-  const descriptionRef = useRef<View>(null);
   const handlePress = useCallback(
     (event: GestureResponderEvent) => {
-      if (isNonAnsweringClick(event, descriptionRef.current)) return;
+      if (isNonAnsweringClick(event)) return;
       onToggle(qIndex, optIndex, multiSelect);
     },
     [onToggle, qIndex, optIndex, multiSelect],
@@ -152,11 +147,7 @@ function QuestionOptionRow({
         <View style={styles.optionTextBlock}>
           <MarkdownRenderer text={option.label} compact muted={!isSelected} selectable={false} />
           {option.description ? (
-            <View
-              ref={descriptionRef}
-              testID="question-form-option-description"
-              onStartShouldSetResponder={claimResponder}
-            >
+            <View testID="question-form-option-description">
               <MarkdownRenderer text={option.description} compact muted />
             </View>
           ) : null}
@@ -413,12 +404,8 @@ export function QuestionFormCard({
         });
         otherInputRef.current?.replaceText("");
       }
-
-      if (!multiSelect && next.size > 0 && qIndex === activeQuestionIndex && questions) {
-        setActiveQuestionIndex(Math.min(qIndex + 1, questions.length - 1));
-      }
     },
-    [activeQuestionIndex, otherTexts, questions, selections],
+    [otherTexts, selections],
   );
 
   const setOtherText = useCallback(

packages/app/src/components/welcome-screen.tsx

@@ -1,4 +1,5 @@
-import { useCallback, useEffect, useMemo, useState, useSyncExternalStore } from "react";
+import { useAddHost } from "@/hosts/add-host";
+import { useCallback, useEffect, useMemo, useSyncExternalStore } from "react";
 import { useTranslation } from "react-i18next";
 import { Pressable, Text, View, ScrollView } from "react-native";
 import { useRouter } from "expo-router";
@@ -12,11 +13,7 @@ import {
   Terminal,
 } from "lucide-react-native";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
-import type { HostProfile } from "@/types/host-connection";
 import { getHostRuntimeStore, isHostRuntimeConnected, useHosts } from "@/runtime/host-runtime";
-import { AddHostModal } from "./add-host-modal";
-import { AddRemoteSshHostModal } from "./add-remote-ssh-host-modal";
-import { PairLinkModal } from "./pair-link-modal";
 import { Button } from "@/components/ui/button";
 import { resolveAppVersion } from "@/utils/app-version";
 import { formatVersionWithPrefix } from "@/desktop/updates/desktop-updates";
@@ -162,20 +159,13 @@ function useAnyHostOnline(serverIds: string[]): string | null {
   );
 }
 
-export interface WelcomeScreenProps {
-  onHostAdded?: (profile: HostProfile) => void;
-}
-
-export function WelcomeScreen({ onHostAdded }: WelcomeScreenProps) {
+export function WelcomeScreen() {
   const { theme } = useUnistyles();
   const { t } = useTranslation();
   const insets = useSafeAreaInsets();
   const router = useRouter();
   const appVersion = resolveAppVersion();
   const appVersionText = formatVersionWithPrefix(appVersion);
-  const [isDirectOpen, setIsDirectOpen] = useState(false);
-  const [isRemoteSshOpen, setIsRemoteSshOpen] = useState(false);
-  const [isPasteLinkOpen, setIsPasteLinkOpen] = useState(false);
   const hosts = useHosts();
   const anyOnlineServerId = useAnyHostOnline(hosts.map((h) => h.serverId));
 
@@ -196,23 +186,10 @@ export function WelcomeScreen({ onHostAdded }: WelcomeScreenProps) {
     router.push("/settings");
   }, [router]);
 
-  const handleOpenDirect = useCallback(() => setIsDirectOpen(true), []);
-  const handleCloseDirect = useCallback(() => setIsDirectOpen(false), []);
-  const handleOpenRemoteSsh = useCallback(() => setIsRemoteSshOpen(true), []);
-  const handleCloseRemoteSsh = useCallback(() => setIsRemoteSshOpen(false), []);
-  const handleOpenPasteLink = useCallback(() => setIsPasteLinkOpen(true), []);
-  const handleClosePasteLink = useCallback(() => setIsPasteLinkOpen(false), []);
-  const handleScanQr = useCallback(() => {
-    router.push("/pair-scan?source=onboarding");
-  }, [router]);
-
-  const handleHostSaved = useCallback(
-    ({ profile }: { profile: HostProfile; serverId: string }) => {
-      onHostAdded?.(profile);
-      finishOnboarding();
-    },
-    [onHostAdded, finishOnboarding],
-  );
+  const handleOpenDirect = useAddHost({ method: "direct", onAdded: finishOnboarding });
+  const handleOpenRemoteSsh = useAddHost({ method: "ssh", onAdded: finishOnboarding });
+  const handleOpenPasteLink = useAddHost({ method: "link", onAdded: finishOnboarding });
+  const handleScanQr = useAddHost({ method: "scan", onAdded: finishOnboarding });
 
   const actions: WelcomeAction[] =
     isWeb || isFdroidBuild
@@ -316,24 +293,6 @@ export function WelcomeScreen({ onHostAdded }: WelcomeScreenProps) {
           </Button>
         </View>
         <Text style={styles.versionLabel}>{appVersionText}</Text>
-
-        <AddHostModal
-          visible={isDirectOpen}
-          onClose={handleCloseDirect}
-          onSaved={handleHostSaved}
-        />
-
-        <AddRemoteSshHostModal
-          visible={isRemoteSshOpen}
-          onClose={handleCloseRemoteSsh}
-          onSaved={handleHostSaved}
-        />
-
-        <PairLinkModal
-          visible={isPasteLinkOpen}
-          onClose={handleClosePasteLink}
-          onSaved={handleHostSaved}
-        />
       </ScrollView>
     </View>
   );

packages/app/src/desktop/daemon/daemon-management-toggle.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from "vitest";
 import { executeDaemonManagementToggle } from "./daemon-management-toggle";
-import { resolveDesktopDaemonServerId, type DesktopDaemonStatus } from "./desktop-daemon";
+import type { DesktopDaemonStatus } from "./desktop-daemon";
 
 const runningManagedStatus: DesktopDaemonStatus = {
   serverId: "desktop",
@@ -54,29 +54,6 @@ function makeDeps(overrides?: {
   };
 }
 
-it("retains the desktop identity when the daemon is stopped or status fails", async () => {
-  expect(
-    await resolveDesktopDaemonServerId({
-      getStatus: async () => ({ ...stoppedStatus, serverId: "" }),
-      getSavedId: async () => "desktop",
-    }),
-  ).toBe("desktop");
-  expect(
-    await resolveDesktopDaemonServerId({
-      getStatus: async () => {
-        throw new Error("offline");
-      },
-      getSavedId: async () => "desktop",
-    }),
-  ).toBe("desktop");
-  expect(
-    await resolveDesktopDaemonServerId({
-      getStatus: async () => runningManagedStatus,
-      getSavedId: async () => "old",
-    }),
-  ).toBe("desktop");
-});
-
 describe("executeDaemonManagementToggle", () => {
   describe("enable path (currentlyManaging: false)", () => {
     it("persists the new setting then starts the daemon", async () => {

packages/app/src/desktop/daemon/desktop-daemon.ts

@@ -186,28 +186,6 @@ export async function getDesktopDaemonStatus(): Promise<DesktopDaemonStatus> {
   return parseDesktopDaemonStatus(await invokeDesktopCommand("desktop_daemon_status"));
 }
 
-/** Resolve the identity even when the daemon has stopped. */
-export async function resolveDesktopDaemonServerId(
-  deps: {
-    getStatus(): Promise<DesktopDaemonStatus>;
-    getSavedId(): Promise<string | null>;
-  } = {
-    getStatus: getDesktopDaemonStatus,
-    getSavedId: () => invokeDesktopCommand<string | null>("desktop_daemon_identity"),
-  },
-): Promise<string | null> {
-  try {
-    const id = (await deps.getStatus()).serverId.trim();
-    if (id) return id;
-  } catch {
-    /* The persisted identity remains available if the status request fails. */
-  }
-  const id = await deps.getSavedId();
-  if (id === null) return null;
-  if (typeof id !== "string") throw new Error("Invalid desktop daemon identity");
-  return id.trim() || null;
-}
-
 export async function startDesktopDaemon(): Promise<DesktopDaemonStatus> {
   return parseDesktopDaemonStatus(await invokeDesktopCommand("start_desktop_daemon"));
 }

packages/app/src/hosts/add-host/index.tsx

@@ -0,0 +1,89 @@
+import { createContext, useCallback, useContext, useState, useMemo, type ReactNode } from "react";
+import { useTranslation } from "react-i18next";
+import { useStore } from "zustand";
+import { AddHostMethodModal } from "./internal/add-host-method-modal";
+import { AddHostModal } from "./internal/add-host-modal";
+import { AddRemoteSshHostModal } from "./internal/add-remote-ssh-host-modal";
+import { PairLinkModal } from "./internal/pair-link-modal";
+import { AdaptiveModalSheet } from "@/components/adaptive-modal-sheet";
+import { PairScanContent } from "./internal/scan";
+import { createAddHostFlow, type AddHostOptions, type AddHostSession } from "./internal/model";
+
+const Context = createContext<ReturnType<typeof createAddHostFlow> | null>(null);
+
+/** Owns the flow outside screen and appearance lifetimes. Callers own success navigation. */
+export function AddHostProvider({ children }: { children: ReactNode }) {
+  const [flow] = useState(createAddHostFlow);
+  return <Context.Provider value={flow}>{children}</Context.Provider>;
+}
+
+export function AddHostFlowHost() {
+  const flow = useContext(Context);
+  if (!flow) throw new Error("AddHostFlowHost requires AddHostProvider");
+  const session = useStore(flow.store, (state) => state.session);
+  return session ? <AddHostSessionView key={session.id} session={session} /> : null;
+}
+
+export function useAddHost({ method, onAdded }: AddHostOptions = {}) {
+  const flow = useContext(Context);
+  if (!flow) throw new Error("useAddHost requires AddHostProvider");
+  return useCallback(() => flow.open({ method, onAdded }), [flow, method, onAdded]);
+}
+
+function AddHostSessionView({ session }: { session: AddHostSession }) {
+  const { t } = useTranslation();
+  const method = useStore(session.step, (state) => state.method);
+  const back = useCallback(() => session.choose(null), [session]);
+  const direct = useCallback(() => session.choose("direct"), [session]);
+  const ssh = useCallback(() => session.choose("ssh"), [session]);
+  const link = useCallback(() => session.choose("link"), [session]);
+  const scan = useCallback(() => session.choose("scan"), [session]);
+  const scanned = useCallback((serverId: string) => session.complete({ serverId }), [session]);
+  const header = useMemo(
+    () => ({ title: t("pairing.scan.title"), back: { onPress: back } }),
+    [t, back],
+  );
+  return (
+    <>
+      <AddHostMethodModal
+        visible={method === null}
+        onClose={session.close}
+        onDirectConnection={direct}
+        onRemoteSsh={ssh}
+        onPasteLink={link}
+        onScanQr={scan}
+      />
+      <AddHostModal
+        visible={method === "direct"}
+        onClose={session.close}
+        onCancel={back}
+        onSaved={session.complete}
+      />
+      <AddRemoteSshHostModal
+        visible={method === "ssh"}
+        onClose={session.close}
+        onCancel={back}
+        onSaved={session.complete}
+      />
+      <PairLinkModal
+        visible={method === "link"}
+        onClose={session.close}
+        onCancel={back}
+        onSaved={session.complete}
+      />
+      {method === "scan" ? (
+        <AdaptiveModalSheet
+          header={header}
+          visible
+          onClose={session.close}
+          scrollable={false}
+          snapPoints={SCAN_SNAP_POINTS}
+          desktopHeight="85%"
+        >
+          <PairScanContent onConnected={scanned} onClose={back} />
+        </AdaptiveModalSheet>
+      ) : null}
+    </>
+  );
+}
+const SCAN_SNAP_POINTS = ["90%"];

packages/app/src/hosts/add-host/internal/add-host-method-modal.tsx

@@ -1,9 +1,10 @@
+import { PressHighlight } from "@/components/ui/press-highlight";
 import { useCallback, useMemo } from "react";
 import { useTranslation } from "react-i18next";
-import { Pressable, Text, View } from "react-native";
+import { Text, View } from "react-native";
 import { StyleSheet, withUnistyles } from "react-native-unistyles";
 import { QrCode, Link2, ClipboardPaste, Terminal } from "lucide-react-native";
-import { AdaptiveModalSheet, type SheetHeader } from "./adaptive-modal-sheet";
+import { AdaptiveModalSheet, type SheetHeader } from "@/components/adaptive-modal-sheet";
 import { isFdroidBuild } from "@/constants/build-profile";
 import { isNative } from "@/constants/platform";
 import { isElectronRuntime } from "@/desktop/host";
@@ -84,7 +85,7 @@ export function AddHostMethodModal({
       onClose={onClose}
       testID="add-host-method-modal"
     >
-      <Pressable
+      <PressHighlight
         style={styles.option}
         onPress={handleDirect}
         accessibilityRole="button"
@@ -98,10 +99,10 @@ export function AddHostMethodModal({
             {t("pairing.connectionMethods.direct.description")}
           </Text>
         </View>
-      </Pressable>
+      </PressHighlight>
 
       {isElectronRuntime() ? (
-        <Pressable
+        <PressHighlight
           style={styles.option}
           onPress={handleRemoteSsh}
           accessibilityRole="button"
@@ -115,11 +116,11 @@ export function AddHostMethodModal({
               {t("pairing.connectionMethods.remoteSsh.description")}
             </Text>
           </View>
-        </Pressable>
+        </PressHighlight>
       ) : null}
 
       {isNative && !isFdroidBuild ? (
-        <Pressable
+        <PressHighlight
           style={styles.option}
           onPress={handleScan}
           accessibilityRole="button"
@@ -132,10 +133,10 @@ export function AddHostMethodModal({
               {t("pairing.connectionMethods.scanQr.description")}
             </Text>
           </View>
-        </Pressable>
+        </PressHighlight>
       ) : null}
 
-      <Pressable
+      <PressHighlight
         style={styles.option}
         onPress={handlePaste}
         accessibilityRole="button"
@@ -149,7 +150,7 @@ export function AddHostMethodModal({
             {t("pairing.connectionMethods.pasteLink.description")}
           </Text>
         </View>
-      </Pressable>
+      </PressHighlight>
     </AdaptiveModalSheet>
   );
 }

packages/app/src/hosts/add-host/internal/add-host-modal.tsx

@@ -1,17 +1,22 @@
+import { PressHighlight } from "@/components/ui/press-highlight";
 import { useCallback, useMemo, useReducer, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
-import { Alert, Pressable, Text, View } from "react-native";
-import { StyleSheet, useUnistyles } from "react-native-unistyles";
+import { Alert, Text, View } from "react-native";
+import { StyleSheet, withUnistyles } from "react-native-unistyles";
 import { useIsCompactFormFactor } from "@/constants/layout";
 import { Check, ChevronDown, ChevronRight, Eye, EyeOff, Link2 } from "lucide-react-native";
 import type { HostProfile } from "@/types/host-connection";
 import { useHosts, useHostMutations } from "@/runtime/host-runtime";
 import { parseConnectionUri, serializeConnectionUri } from "@/utils/daemon-endpoints";
-import { buildConnectionFailureCopy } from "./connection-failure-copy";
-import { AdaptiveModalSheet, AdaptiveTextInput, type SheetHeader } from "./adaptive-modal-sheet";
+import { buildConnectionFailureCopy } from "@/components/connection-failure-copy";
+import {
+  AdaptiveModalSheet,
+  AdaptiveTextInput,
+  type SheetHeader,
+} from "@/components/adaptive-modal-sheet";
 import { Button } from "@/components/ui/button";
-import { PairingTargetTracker } from "./pair-link-credentials";
-import { buildDirectConnectionUri } from "./direct-connection-host";
+import { PairingTargetTracker } from "@/components/pair-link-credentials";
+import { buildDirectConnectionUri } from "@/components/direct-connection-host";
 
 const FLEX_ONE_STYLE = { flex: 1 } as const;
 
@@ -188,7 +193,6 @@ export function AddHostModal({ visible, onClose, onCancel, onSaved }: AddHostMod
 }
 
 function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostModalProps) {
-  const { theme } = useUnistyles();
   const { t } = useTranslation();
   const daemons = useHosts();
   const { probeAndUpsertDirectConnection, beginLinkPairing } = useHostMutations();
@@ -207,10 +211,7 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
   const [inputResetKey, bumpInputResetKey] = useReducer((key: number) => key + 1, 0);
   const advancedTarget = useRef(new PairingTargetTracker("", true));
 
-  const connectIcon = useMemo(
-    () => <Link2 size={16} color={theme.colors.accentForeground} />,
-    [theme.colors.accentForeground],
-  );
+  const connectIcon = useMemo(() => <ThemedLink2 size={16} />, []);
   const hostFieldStyle = useMemo(() => [styles.field, styles.hostField], []);
   const portFieldStyle = useMemo(() => [styles.field, styles.portField], []);
   const checkboxStyle = useMemo(
@@ -415,8 +416,8 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
     setIsAdvancedOpen(false);
   }, [advancedUri, directConnectionLabels, host, isAdvancedOpen, password, port, useTls]);
 
-  const AdvancedIcon = isAdvancedOpen ? ChevronDown : ChevronRight;
-  const PasswordIcon = isPasswordVisible ? EyeOff : Eye;
+  const AdvancedIcon = isAdvancedOpen ? ThemedChevronDown : ThemedChevronRight;
+  const PasswordIcon = isPasswordVisible ? ThemedEyeOff : ThemedEye;
 
   return (
     <AdaptiveModalSheet
@@ -430,7 +431,7 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
       <View style={styles.portRow}>
         <View style={hostFieldStyle}>
           <Text style={styles.label}>{t("pairing.direct.fields.host")}</Text>
-          <AdaptiveTextInput
+          <ThemedAdaptiveTextInput
             testID="direct-host-input"
             nativeID="direct-host-input"
             accessibilityLabel={t("pairing.direct.fields.host")}
@@ -438,7 +439,6 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
             resetKey={`direct-host-${inputResetKey}`}
             onChangeText={setHost}
             placeholder="localhost"
-            placeholderTextColor={theme.colors.foregroundMuted}
             style={styles.input}
             autoCapitalize="none"
             autoCorrect={false}
@@ -449,7 +449,7 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
         </View>
         <View style={portFieldStyle}>
           <Text style={styles.label}>{t("pairing.direct.fields.port")}</Text>
-          <AdaptiveTextInput
+          <ThemedAdaptiveTextInput
             testID="direct-port-input"
             nativeID="direct-port-input"
             accessibilityLabel={t("pairing.direct.fields.port")}
@@ -457,7 +457,6 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
             resetKey={`direct-port-${inputResetKey}`}
             onChangeText={setPort}
             placeholder="6767"
-            placeholderTextColor={theme.colors.foregroundMuted}
             style={styles.input}
             autoCapitalize="none"
             autoCorrect={false}
@@ -469,7 +468,7 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
         </View>
       </View>
 
-      <Pressable
+      <PressHighlight
         style={styles.checkboxRow}
         onPress={handleToggleUseTls}
         disabled={isSaving}
@@ -482,17 +481,17 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
         <View style={checkboxStyle}>
           {useTls ? (
             <View testID="direct-ssl-toggle-checked">
-              <Check size={14} color={theme.colors.accentForeground} />
+              <ThemedCheck size={14} />
             </View>
           ) : null}
         </View>
         <Text style={styles.label}>{t("pairing.direct.fields.useSsl")}</Text>
-      </Pressable>
+      </PressHighlight>
 
       <View style={styles.field}>
         <Text style={styles.label}>{t("pairing.direct.fields.password")}</Text>
         <View style={styles.passwordRow}>
-          <AdaptiveTextInput
+          <ThemedAdaptiveTextInput
             testID="direct-password-input"
             nativeID="direct-password-input"
             accessibilityLabel={t("pairing.direct.fields.password")}
@@ -500,7 +499,6 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
             resetKey={`direct-password-${inputResetKey}`}
             onChangeText={setPassword}
             placeholder={t("pairing.direct.fields.optional")}
-            placeholderTextColor={theme.colors.foregroundMuted}
             style={passwordInputStyle}
             autoCapitalize="none"
             autoCorrect={false}
@@ -509,7 +507,7 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
             returnKeyType="done"
             onSubmitEditing={handleSubmitEditing}
           />
-          <Pressable
+          <PressHighlight
             style={styles.iconButton}
             onPress={handleTogglePasswordVisibility}
             disabled={isSaving}
@@ -521,13 +519,13 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
             }
             testID="direct-password-visibility-toggle"
           >
-            <PasswordIcon size={18} color={theme.colors.foregroundMuted} />
-          </Pressable>
+            <PasswordIcon size={18} />
+          </PressHighlight>
         </View>
       </View>
 
       <View style={styles.field}>
-        <Pressable
+        <PressHighlight
           style={styles.advancedToggle}
           onPress={handleToggleAdvanced}
           disabled={isSaving}
@@ -537,11 +535,11 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
           }
           testID="direct-host-advanced-toggle"
         >
-          <AdvancedIcon size={16} color={theme.colors.foregroundMuted} />
+          <AdvancedIcon size={16} />
           <Text style={styles.advancedText}>{t("pairing.direct.advanced.label")}</Text>
-        </Pressable>
+        </PressHighlight>
         {isAdvancedOpen ? (
-          <AdaptiveTextInput
+          <ThemedAdaptiveTextInput
             testID="direct-host-uri-input"
             nativeID="direct-host-uri-input"
             accessibilityLabel={t("pairing.direct.fields.connectionUri")}
@@ -549,7 +547,6 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
             resetKey={`direct-host-uri-${inputResetKey}`}
             onChangeText={handleChangeAdvancedUri}
             placeholder="tcp://localhost:6767?ssl=true"
-            placeholderTextColor={theme.colors.foregroundMuted}
             style={styles.input}
             autoCapitalize="none"
             autoCorrect={false}
@@ -585,3 +582,23 @@ function AddHostModalContent({ visible, onClose, onCancel, onSaved }: AddHostMod
     </AdaptiveModalSheet>
   );
 }
+
+const ThemedLink2 = withUnistyles(Link2, (theme) => ({ color: theme.colors.accentForeground }));
+
+const ThemedCheck = withUnistyles(Check, (theme) => ({ color: theme.colors.accentForeground }));
+
+const ThemedChevronDown = withUnistyles(ChevronDown, (theme) => ({
+  color: theme.colors.foregroundMuted,
+}));
+
+const ThemedChevronRight = withUnistyles(ChevronRight, (theme) => ({
+  color: theme.colors.foregroundMuted,
+}));
+
+const ThemedEye = withUnistyles(Eye, (theme) => ({ color: theme.colors.foregroundMuted }));
+
+const ThemedEyeOff = withUnistyles(EyeOff, (theme) => ({ color: theme.colors.foregroundMuted }));
+
+const ThemedAdaptiveTextInput = withUnistyles(AdaptiveTextInput, (theme) => ({
+  placeholderTextColor: theme.colors.foregroundMuted,
+}));

packages/app/src/hosts/add-host/internal/add-remote-ssh-host-modal.tsx

@@ -1,7 +1,7 @@
+import { PressHighlight } from "@/components/ui/press-highlight";
 import { useCallback, useMemo, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
 import {
-  Pressable,
   Text,
   View,
   type PressableStateCallbackType,
@@ -23,7 +23,7 @@ import {
 import type { EditingTextInputHandle } from "@/components/ui/text-input";
 import { useIsCompactFormFactor } from "@/constants/layout";
 import { DaemonConnectionTestError } from "@/utils/test-daemon-connection";
-import { AdaptiveModalSheet, type SheetHeader } from "./adaptive-modal-sheet";
+import { AdaptiveModalSheet, type SheetHeader } from "@/components/adaptive-modal-sheet";
 
 const FLEX_ONE_STYLE = { flex: 1 } as const;
 const ThemedTerminal = withUnistyles(Terminal);
@@ -174,11 +174,11 @@ export function AddRemoteSshHostModal({
     }
 
     clear();
-    onClose();
     onSaved?.({
       ...result,
       isNewHost: !hosts.some((profile) => profile.serverId === result.serverId),
     });
+    onClose();
   }, [clear, hosts, isSaving, onClose, onSaved, probeAndUpsertRemoteSshConnection, t]);
   const handleTargetChange = useCallback((value: string) => {
     targetRef.current = value;
@@ -260,7 +260,7 @@ export function AddRemoteSshHostModal({
               onSubmitEditing={handleSubmit}
             />
           </View>
-          <Pressable
+          <PressHighlight
             style={iconButtonStyle}
             onPress={handleTogglePasswordVisibility}
             disabled={isSaving}
@@ -273,7 +273,7 @@ export function AddRemoteSshHostModal({
             testID="remote-ssh-password-visibility-toggle"
           >
             {isPasswordVisible ? <ThemedEyeOff size={18} /> : <ThemedEye size={18} />}
-          </Pressable>
+          </PressHighlight>
         </View>
       </Field>
       <View style={styles.actions}>

packages/app/src/hosts/add-host/internal/model.test.ts

@@ -0,0 +1,49 @@
+import { describe, expect, it } from "vitest";
+import { createAddHostFlow } from "./model";
+
+describe("add host flow", () => {
+  it("closes before notifying the consumer and ignores duplicate completion", () => {
+    const flow = createAddHostFlow();
+    const added: string[] = [];
+    flow.open({
+      onAdded: (serverId) => {
+        expect(flow.store.getState().session).toBeNull();
+        added.push(serverId);
+      },
+    });
+    const session = flow.store.getState().session!;
+    session.choose("direct");
+    session.complete({ serverId: "new-host" });
+    session.complete({ serverId: "new-host" });
+    expect(added).toEqual(["new-host"]);
+  });
+
+  it("cancels without a success action and accepts a fresh request", () => {
+    const flow = createAddHostFlow();
+    const added: string[] = [];
+    flow.open({ onAdded: (id) => added.push(id) });
+    const cancelled = flow.store.getState().session!;
+    cancelled.choose("scan");
+    cancelled.close();
+    expect(flow.store.getState().session).toBeNull();
+    flow.open({ method: "link" });
+    const current = flow.store.getState().session!;
+    cancelled.complete({ serverId: "late-result" });
+    cancelled.close();
+    expect(flow.store.getState().session).toBe(current);
+    expect(current.step.getState()).toEqual({ method: "link" });
+    expect(added).toEqual([]);
+    current.complete({ serverId: "new-host" });
+    expect(flow.store.getState().session).toBeNull();
+  });
+
+  it("returns to method selection within the same request", () => {
+    const flow = createAddHostFlow();
+    flow.open();
+    const session = flow.store.getState().session!;
+    session.choose("ssh");
+    session.choose(null);
+    expect(flow.store.getState().session).toBe(session);
+    expect(session.step.getState()).toEqual({ method: null });
+  });
+});

packages/app/src/hosts/add-host/internal/model.ts

@@ -0,0 +1,47 @@
+import { createStore, type StoreApi } from "zustand/vanilla";
+
+export type AddHostMethod = "direct" | "ssh" | "link" | "scan";
+export interface AddHostOptions {
+  method?: AddHostMethod;
+  onAdded?: (serverId: string) => void;
+}
+
+export interface AddHostSession {
+  id: number;
+  step: StoreApi<{ method: AddHostMethod | null }>;
+  choose(method: AddHostMethod | null): void;
+  close(): void;
+  complete(result: { serverId: string }): void;
+}
+
+export function createAddHostFlow() {
+  const store = createStore<{ session: AddHostSession | null }>(() => ({ session: null }));
+  let nextId = 0;
+  function createSession(options: AddHostOptions) {
+    const step = createStore<{ method: AddHostMethod | null }>(() => ({
+      method: options.method ?? null,
+    }));
+    const session = {
+      id: ++nextId,
+      step,
+      choose(method: AddHostMethod | null) {
+        step.setState({ method });
+      },
+      close() {
+        if (store.getState().session === session) store.setState({ session: null });
+      },
+      complete({ serverId }: { serverId: string }) {
+        if (store.getState().session !== session) return;
+        session.close();
+        options.onAdded?.(serverId);
+      },
+    };
+    return session;
+  }
+  return {
+    store,
+    open(options: AddHostOptions = {}) {
+      store.setState({ session: createSession(options) });
+    },
+  };
+}

packages/app/src/hosts/add-host/internal/pair-link-modal.tsx

@@ -1,16 +1,20 @@
 import { useCallback, useMemo, useReducer, useRef, useState } from "react";
 import { useTranslation } from "react-i18next";
 import { Alert, Text, View } from "react-native";
-import { StyleSheet, useUnistyles } from "react-native-unistyles";
+import { StyleSheet, withUnistyles } from "react-native-unistyles";
 import { useIsCompactFormFactor } from "@/constants/layout";
 import { Link } from "lucide-react-native";
 import type { HostProfile } from "@/types/host-connection";
 import { useHosts, useHostMutations, type PasswordRequiredPairing } from "@/runtime/host-runtime";
 import { parseRelayConnectionUri } from "@/utils/daemon-endpoints";
 import { parseConnectionOfferFromUrl } from "@getpaseo/protocol/connection-offer";
-import { AdaptiveModalSheet, AdaptiveTextInput, type SheetHeader } from "./adaptive-modal-sheet";
+import {
+  AdaptiveModalSheet,
+  AdaptiveTextInput,
+  type SheetHeader,
+} from "@/components/adaptive-modal-sheet";
 import { getConnectionAuthFailureReason } from "@/utils/test-daemon-connection";
-import { PairingTargetTracker } from "./pair-link-credentials";
+import { PairingTargetTracker } from "@/components/pair-link-credentials";
 import { Button } from "@/components/ui/button";
 import type { EditingTextInputHandle } from "@/components/ui/text-input";
 
@@ -100,7 +104,6 @@ function PairLinkModalContent({
   onCancel,
   onSaved,
 }: PairLinkModalProps) {
-  const { theme } = useUnistyles();
   const { t } = useTranslation();
   const daemons = useHosts();
   const { beginLinkPairing } = useHostMutations();
@@ -126,10 +129,7 @@ function PairLinkModalContent({
     resetPasswordInput();
   }, []);
 
-  const pairIcon = useMemo(
-    () => <Link size={16} color={theme.colors.accentForeground} />,
-    [theme.colors.accentForeground],
-  );
+  const pairIcon = useMemo(() => <ThemedLink size={16} />, []);
 
   const handleClose = useCallback(() => {
     if (isSaving) return;
@@ -212,7 +212,7 @@ function PairLinkModalContent({
 
       <View style={styles.field}>
         <Text style={styles.label}>{t("pairing.link.label")}</Text>
-        <AdaptiveTextInput
+        <ThemedAdaptiveTextInput
           ref={inputRef}
           initialValue={initialUrl}
           testID="pair-link-input"
@@ -220,7 +220,6 @@ function PairLinkModalContent({
           accessibilityLabel={t("pairing.link.label")}
           onChangeText={handleChangeOfferUrl}
           placeholder="https://app.paseo.sh/#offer=..."
-          placeholderTextColor={theme.colors.foregroundMuted}
           style={styles.input}
           autoFocus
           autoCapitalize="none"
@@ -235,7 +234,7 @@ function PairLinkModalContent({
           <Text style={styles.label}>
             {t("pairing.hostPassword.title", { host: parsedHostLabel(offerUrlRef.current) })}
           </Text>
-          <AdaptiveTextInput
+          <ThemedAdaptiveTextInput
             testID="pair-link-password-input"
             resetKey={`pair-link-password-${passwordResetKey}`}
             accessibilityLabel={t("pairing.hostPassword.label")}
@@ -274,3 +273,9 @@ function PairLinkModalContent({
     </AdaptiveModalSheet>
   );
 }
+
+const ThemedLink = withUnistyles(Link, (theme) => ({ color: theme.colors.accentForeground }));
+
+const ThemedAdaptiveTextInput = withUnistyles(AdaptiveTextInput, (theme) => ({
+  placeholderTextColor: theme.colors.foregroundMuted,
+}));

packages/app/src/hosts/add-host/internal/scan.tsx

@@ -1,17 +1,14 @@
 import { useCallback, useEffect, useMemo, useState, useSyncExternalStore } from "react";
 import { useTranslation } from "react-i18next";
-import { Pressable, Text, View } from "react-native";
-import { useLocalSearchParams, useRouter, type Href } from "expo-router";
+import { Text, View } from "react-native";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
-import { StyleSheet, useUnistyles } from "react-native-unistyles";
+import { StyleSheet } from "react-native-unistyles";
 import { CameraView, useCameraPermissions } from "expo-camera";
 import type { BarcodeScanningResult, BarcodeSettings } from "expo-camera";
 import { getHostRuntimeStore } from "@/runtime/host-runtime";
-import { openPairScan } from "@/hosts/pair-scan-model";
-import { buildHostRootRoute, buildSettingsHostRoute } from "@/utils/host-routes";
+import { openPairScan } from "./pair-scan-model";
 import { isWeb } from "@/constants/platform";
-import { BackHeader } from "@/components/headers/back-header";
-import { PairLinkModal } from "@/components/pair-link-modal";
+import { PairLinkModal } from "./pair-link-modal";
 import { Button } from "@/components/ui/button";
 
 const styles = StyleSheet.create((theme) => ({
@@ -113,50 +110,26 @@ const styles = StyleSheet.create((theme) => ({
   },
 }));
 
-export default function PairScanScreen() {
-  const { theme } = useUnistyles();
+export function PairScanContent({
+  onConnected,
+  onClose,
+}: {
+  onConnected: (serverId: string) => void;
+  onClose: () => void;
+}) {
   const { t } = useTranslation();
   const insets = useSafeAreaInsets();
-  const router = useRouter();
-  const params = useLocalSearchParams<{
-    source?: string;
-  }>();
-  const source = typeof params.source === "string" ? params.source : "settings";
-
   const [permission, requestPermission] = useCameraPermissions();
 
-  const navigateToPairedHost = useCallback(
-    (serverId: string) => {
-      if (source === "onboarding") {
-        router.replace(buildHostRootRoute(serverId));
-        return;
-      }
-      router.replace(buildSettingsHostRoute(serverId));
-    },
-    [router, source],
-  );
-
   const [scan] = useState(() =>
     openPairScan({
-      importConnectionLink: (link) =>
-        getHostRuntimeStore().importConnectionLink(
-          link,
-          source === "onboarding" ? "hostRoot" : "hostSettings",
-        ),
-      onConnected: navigateToPairedHost,
+      importConnectionLink: (link) => getHostRuntimeStore().importConnectionLink(link, "hostRoot"),
+      onConnected,
     }),
   );
   const scanState = useSyncExternalStore(scan.subscribe, scan.getState, scan.getState);
   useEffect(() => () => scan.close(), [scan]);
 
-  const closeToSource = useCallback(() => {
-    try {
-      router.back();
-    } catch {
-      router.replace("/" as Href);
-    }
-  }, [router]);
-
   useEffect(() => {
     if (isWeb) return;
     if (permission && permission.granted) return;
@@ -169,35 +142,29 @@ export default function PairScanScreen() {
     [scan],
   );
 
-  const handleRouterBack = useCallback(() => router.back(), [router]);
   const savePasswordPairing = useCallback(
-    ({ serverId }: { serverId: string }) => navigateToPairedHost(serverId),
-    [navigateToPairedHost],
+    ({ serverId }: { serverId: string }) => onConnected(serverId),
+    [onConnected],
   );
   const handleRequestPermission = useCallback(() => {
     void requestPermission();
   }, [requestPermission]);
 
   const bodyStyle = useMemo(
-    () => [styles.body, { paddingBottom: insets.bottom + theme.spacing[6] }],
-    [insets.bottom, theme.spacing],
-  );
-  const helperTextStyle = useMemo(
-    () => [styles.helperText, { color: theme.colors.foreground }],
-    [theme.colors.foreground],
+    () => [styles.body, { paddingBottom: insets.bottom + 24 }],
+    [insets.bottom],
   );
 
   if (isWeb) {
     return (
       <View style={styles.container}>
-        <BackHeader title={t("pairing.scan.title")} onBack={handleRouterBack} />
         <View style={bodyStyle}>
           <View style={styles.permissionCard}>
             <Text style={styles.permissionTitle}>{t("pairing.scan.webUnavailableTitle")}</Text>
             <Text style={styles.permissionBody}>{t("pairing.scan.webUnavailableBody")}</Text>
-            <Pressable style={styles.permissionButton} onPress={closeToSource}>
-              <Text style={styles.permissionButtonText}>{t("pairing.scan.backToSettings")}</Text>
-            </Pressable>
+            <Button style={styles.permissionButton} onPress={onClose}>
+              <Text style={styles.permissionButtonText}>{t("common.actions.back")}</Text>
+            </Button>
           </View>
         </View>
       </View>
@@ -208,16 +175,14 @@ export default function PairScanScreen() {
 
   return (
     <View style={styles.container}>
-      <BackHeader title={t("pairing.scan.title")} onBack={closeToSource} />
-
       <View style={bodyStyle}>
         {!granted ? (
           <View style={styles.permissionCard}>
             <Text style={styles.permissionTitle}>{t("pairing.scan.cameraPermissionTitle")}</Text>
             <Text style={styles.permissionBody}>{t("pairing.scan.cameraPermissionBody")}</Text>
-            <Pressable style={styles.permissionButton} onPress={handleRequestPermission}>
+            <Button style={styles.permissionButton} onPress={handleRequestPermission}>
               <Text style={styles.permissionButtonText}>{t("pairing.scan.grantPermission")}</Text>
-            </Pressable>
+            </Button>
           </View>
         ) : (
           <View style={styles.cameraWrap}>
@@ -235,10 +200,10 @@ export default function PairScanScreen() {
                 <View style={[styles.corner, styles.cornerBR]} />
               </View>
               {scanState.status === "pairing" ? (
-                <Text style={helperTextStyle}>{t("pairing.scan.pairing")}</Text>
+                <Text style={styles.helperText}>{t("pairing.scan.pairing")}</Text>
               ) : null}
               {scanState.status === "stopped" && scanState.error ? (
-                <Text style={helperTextStyle}>{scanState.error}</Text>
+                <Text style={styles.helperText}>{scanState.error}</Text>
               ) : null}
               {scanState.status === "stopped" ? (
                 <Button

packages/app/src/hosts/host-chooser.tsx

@@ -1,12 +1,11 @@
+import { useAddHost } from "@/hosts/add-host";
 import { Modal } from "@/components/ui/modal";
-import { usePanelStore } from "@/stores/panel-store";
 import { createElement, useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { Pressable, ScrollView, Text, View, type PressableStateCallbackType } from "react-native";
 import {
   EditingTextInput as TextInput,
   type EditingTextInputHandle,
 } from "@/components/ui/text-input";
-import { router } from "expo-router";
 import { Server } from "lucide-react-native";
 import { create } from "zustand";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
@@ -20,7 +19,6 @@ import {
 } from "@/lib/overlay-root";
 import { useHosts } from "@/runtime/host-runtime";
 import { orderHostsLocalFirst, type HostProfile } from "@/types/host-connection";
-import { buildSettingsAddHostRoute } from "@/utils/host-routes";
 
 type HostFilter = (host: HostProfile) => boolean;
 type HostChoiceHandler = (serverId: string) => void | Promise<void>;
@@ -65,6 +63,7 @@ function matchesHostQuery(host: HostProfile, query: string): boolean {
 }
 
 export function useHostChooser() {
+  const addHost = useAddHost();
   const hosts = useHosts();
   const localServerId = useLocalDaemonServerId();
   const open = useHostChooserStore((state) => state.open);
@@ -76,13 +75,7 @@ export function useHostChooser() {
       );
 
       if (availableHosts.length === 0) {
-        (
-          input.onNoHosts ??
-          (() => {
-            usePanelStore.getState().showMobileAgent();
-            router.push(buildSettingsAddHostRoute(Date.now()));
-          })
-        )();
+        (input.onNoHosts ?? addHost)();
         return false;
       }
 
@@ -98,7 +91,7 @@ export function useHostChooser() {
       });
       return true;
     },
-    [hosts, localServerId, open],
+    [hosts, localServerId, open, addHost],
   );
 }
 

packages/app/src/plugins/buttons/model.test.ts

@@ -17,6 +17,9 @@ function installation(): InstalledPlugin {
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     cleanup: () => undefined,
     settingsScreens: [],
     surfaces: [],

packages/app/src/plugins/catalog-sync-model.test.ts

@@ -132,19 +132,12 @@ function harness() {
       return {
         hosts: createPluginHosts(
           {
-            addHost: async () => ({ status: "cancelled" }),
             getHosts: () => [],
             getSnapshot: () => null,
             subscribeAll: () => () => {},
             subscribeHostList: () => () => {},
-            renameHost: async () => {},
-            setHostColor: async () => {},
-            setHostBadgeDisplay: async () => {},
-            removeHost: async () => {},
-            removeConnection: async () => {},
           },
           installation.lifetime.signal,
-          { openSettings() {}, isManagedLocalHost: async () => false },
         ),
         paseo: installation.paseo,
         i18n: installation.i18n,
@@ -160,6 +153,9 @@ function harness() {
         openPanel() {},
         addComposerPill: () => ({ update() {}, remove() {} }),
         addHeaderButton: () => ({ update() {}, remove() {} }),
+        subscribe: () => {
+          throw new Error("Subscriptions are not used here");
+        },
       };
     },
   });

packages/app/src/plugins/client-runtime.ts

@@ -1,11 +1,8 @@
 import { createPlayAudio, type AudioEngine } from "@/audio";
 import { getHostRuntimeStore } from "@/runtime/host-runtime";
-import {
-  resolveDesktopDaemonServerId,
-  shouldUseDesktopDaemon,
-} from "@/desktop/daemon/desktop-daemon";
 import { createPluginHosts } from "./hosts";
 import type { PluginClientOpenPanelOptions } from "@getpaseo/plugin/client";
+import { subscribePluginRpc } from "@getpaseo/plugin/client/host";
 import {
   createPluginAgentActionContext,
   createPluginCapabilities,
@@ -30,14 +27,7 @@ export function createPluginClientRuntime(
     ...capabilities,
     i18n: installation.i18n,
     playAudio: createPlayAudio(audio, installation.lifetime.signal),
-    hosts: createPluginHosts(getHostRuntimeStore(), installation.lifetime.signal, {
-      openSettings(serverId) {
-        createPluginNavigation({ serverId, workspaceId: null }).openHostSettings(serverId);
-      },
-      async isManagedLocalHost(serverId) {
-        return shouldUseDesktopDaemon() && (await resolveDesktopDaemonServerId()) === serverId;
-      },
-    }),
+    hosts: createPluginHosts(getHostRuntimeStore(), installation.lifetime.signal),
     addComposerPill(contribution) {
       return pluginButtonStore.addComposerPill(installation, contribution);
     },
@@ -47,6 +37,8 @@ export function createPluginClientRuntime(
     openPanel(panelId, options) {
       openClientPanel({ installation, state, panelId, options });
     },
+    subscribe: (contract, input, onEvent, options) =>
+      subscribePluginRpc(contract, installation.subscribe, input, onEvent, options),
   };
 }
 

packages/app/src/plugins/command-center/contributions.test.ts

@@ -71,6 +71,9 @@ function plugin(onAgentSelect: AgentCommandItem["onSelect"]): InstalledPlugin {
         clientType: "cli",
       }),
     ),
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     invoke: async (method: string, input: unknown) => {
       expect(method).toBe("review.inspect");
       return { value: inspect.input.parse(input).value + 1 };

packages/app/src/plugins/evaluate.test.ts

@@ -819,14 +819,6 @@ it("binds imported getters to each originating installation across delayed callb
     hosts: {
       getSnapshot: () => [],
       subscribe: () => () => {},
-      observeHosts: () => {
-        calls.push(`${installation}/observe`);
-        return () => {};
-      },
-      addHost: async (input) => {
-        calls.push(`${installation}/add:${input.connection}`);
-        return { status: "cancelled" };
-      },
       getPaseoClient(serverId) {
         calls.push(`${installation}/${serverId}`);
         return runtime.paseo;
@@ -834,12 +826,11 @@ it("binds imported getters to each originating installation across delayed callb
     },
   });
   const source = bundle(`
-    const { getPaseoClient, observeHosts, addHost } = require("@getpaseo/plugin/client");
+    const { getPaseoClient } = require("@getpaseo/plugin/client");
     getPaseoClient("entry-host");
-    observeHosts(() => {});
     plugin.addCommandCenterItem({
       id: "read", title: "Read", icon: "Server", context: "global",
-      onSelect: async () => { await Promise.resolve(); getPaseoClient("target-host"); await addHost({ connection: "example:6767" }); },
+      onSelect: async () => { await Promise.resolve(); getPaseoClient("target-host"); },
     });
   `);
   const first = runPluginClientBundle("same-id", source, hostRuntime("first"));
@@ -849,13 +840,9 @@ it("binds imported getters to each originating installation across delayed callb
   await second.commandCenterItems[0].onSelect({} as never);
   expect(calls).toEqual([
     "first/entry-host",
-    "first/observe",
     "second/entry-host",
-    "second/observe",
     "first/target-host",
-    "first/add:example:6767",
     "second/target-host",
-    "second/add:example:6767",
   ]);
   await first.cleanup();
   await second.cleanup();

packages/app/src/plugins/evaluate.ts

@@ -111,6 +111,7 @@ export type PluginClientRuntime = Pick<
   | "openScreen"
   | "openSurface"
   | "openPanel"
+  | "subscribe"
   | "addComposerPill"
   | "addHeaderButton"
 > & { hosts: ReturnType<typeof createPluginHosts> };
@@ -520,10 +521,6 @@ export function runPluginClientBundle(
         useSettings,
         openExternalUrl,
         getPaseoClient: (serverId: string) => runtime.hosts.getPaseoClient(serverId),
-        addHost: (input: Parameters<typeof runtime.hosts.addHost>[0]) =>
-          runtime.hosts.addHost(input),
-        observeHosts: (listener: Parameters<typeof runtime.hosts.observeHosts>[0]) =>
-          runtime.hosts.observeHosts(listener),
         useHosts: () =>
           React.useSyncExternalStore(
             runtime.hosts.subscribe,

packages/app/src/plugins/hosts/index.test.ts

@@ -1,66 +1,17 @@
 import { describe, expect, it } from "vitest";
 import { DaemonClient } from "@getpaseo/client/internal/daemon-client";
 import { createPluginHosts, type PluginHostsSource } from "./index";
-import { resolveDesktopDaemonServerId } from "@/desktop/daemon/desktop-daemon";
 
 function registry() {
   const hosts = [
-    {
-      serverId: "a",
-      label: "Alpha",
-      password: "secret",
-      appearance: { color: "none" as const, badgeDisplay: null },
-      connections: [
-        { id: "one", type: "directTcp" as const, endpoint: "localhost:6767", useTls: false },
-        { id: "two", type: "directSocket" as const, path: "/tmp/test" },
-      ],
-      lifecycle: {},
-      preferredConnectionId: null,
-      createdAt: "today",
-      updatedAt: "today",
-    },
-    {
-      serverId: "b",
-      label: "Beta",
-      password: "secret",
-      appearance: { color: "none" as const, badgeDisplay: null },
-      connections: [],
-      lifecycle: {},
-      preferredConnectionId: null,
-      createdAt: "today",
-      updatedAt: "today",
-    },
+    { serverId: "a", label: "Alpha", password: "secret" },
+    { serverId: "b", label: "Beta", password: "secret" },
   ];
-  const snapshots = new Map<
-    string,
-    { connectionStatus: "online" | "offline" | "connecting"; client: DaemonClient | null }
-  >();
+  const snapshots = new Map<string, NonNullable<ReturnType<PluginHostsSource["getSnapshot"]>>>();
   const listeners = new Set<() => void>();
   const source: PluginHostsSource = {
-    addHost: async () => ({ status: "cancelled" }),
     getHosts: () => hosts,
-    getSnapshot: (id) => {
-      const value = snapshots.get(id);
-      return value
-        ? { ...value, activeConnectionId: null, lastError: null, lastOnlineAt: null }
-        : null;
-    },
-    renameHost: async (id, label) => {
-      hosts.find((candidate) => candidate.serverId === id)!.label = label;
-    },
-    setHostColor: async () => {},
-    setHostBadgeDisplay: async () => {},
-    removeHost: async (id) => {
-      const index = hosts.findIndex((host) => host.serverId === id);
-      if (index >= 0) hosts.splice(index, 1);
-      for (const l of listeners) l();
-    },
-    removeConnection: async (id, connectionId) => {
-      const host = hosts.find((candidate) => candidate.serverId === id)!;
-      host.connections = host.connections.filter((c) => c.id !== connectionId);
-      if (!host.connections.length) await source.removeHost(id);
-      else for (const l of listeners) l();
-    },
+    getSnapshot: (id) => snapshots.get(id) ?? null,
     subscribeAll(listener) {
       listeners.add(listener);
       return () => {
@@ -75,10 +26,7 @@ function registry() {
     },
   };
   const lifetime = new AbortController();
-  const runtime = createPluginHosts(source, lifetime.signal, {
-    openSettings() {},
-    isManagedLocalHost: async () => false,
-  });
+  const runtime = createPluginHosts(source, lifetime.signal);
   return {
     hosts,
     snapshots,
@@ -100,7 +48,7 @@ function connection(id: string) {
 describe("plugin host access", () => {
   it("publishes credential-free configured hosts and only changes snapshots when summaries change", () => {
     const h = registry();
-    expect(h.runtime.getSnapshot()).toMatchObject([
+    expect(h.runtime.getSnapshot()).toEqual([
       { serverId: "a", label: "Alpha", status: "offline" },
       { serverId: "b", label: "Beta", status: "offline" },
     ]);
@@ -120,171 +68,6 @@ describe("plugin host access", () => {
     expect(h.listeners.size).toBe(0);
   });
 
-  it("keeps handles stable, protects credentials, and stops observations on unload", async () => {
-    const h = registry();
-    const seen: unknown[] = [];
-    const stop = h.runtime.observeHosts((hosts) => seen.push(hosts));
-    const first = h.runtime.getSnapshot()[0];
-    function walk(value: unknown): void {
-      if (typeof value === "string") expect(value).not.toContain("secret");
-      if (!value || typeof value !== "object") return;
-      for (const [key, child] of Object.entries(value)) {
-        expect(key.toLowerCase()).not.toBe("password");
-        walk(child);
-      }
-    }
-    walk(h.runtime.getSnapshot());
-    h.hosts[0].label = "New name";
-    h.publish();
-    expect(h.runtime.getSnapshot()[0]).toBe(first);
-    expect(first.label).toBe("New name");
-    expect(seen).toHaveLength(2);
-    h.lifetime.abort();
-    h.publish();
-    expect(seen).toHaveLength(2);
-    await expect(first.remove()).rejects.toThrow("Plugin has stopped");
-    stop();
-  });
-
-  it("redacts saved passwords from mutation errors", async () => {
-    const h = registry();
-    h.source.renameHost = async () => {
-      throw new Error("Failed for secret");
-    };
-    await expect(h.runtime.getSnapshot()[0].update({ label: "New" })).rejects.not.toThrow("secret");
-    h.lifetime.abort();
-  });
-
-  it("isolates a throwing observer from other observers and registry mutations", async () => {
-    const h = registry();
-    let calls = 0;
-    h.runtime.observeHosts(() => {
-      if (calls++ > 0) throw new Error("plugin listener failed");
-    });
-    let delivered = 0;
-    h.runtime.observeHosts(() => {
-      delivered++;
-    });
-    await expect(h.runtime.getSnapshot()[0].removeConnection("one")).resolves.toBeUndefined();
-    expect(delivered).toBe(2);
-    expect(h.runtime.getSnapshot()[0].connections).toHaveLength(1);
-    h.lifetime.abort();
-  });
-
-  it("refuses to remove the last connection of the desktop daemon", async () => {
-    const h = registry();
-    const lifetime = new AbortController();
-    const runtime = createPluginHosts(h.source, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async (id) => id === "a",
-    });
-    const host = runtime.getSnapshot()[0];
-    await host.removeConnection("one");
-    await expect(host.removeConnection("two")).rejects.toThrow("desktop daemon");
-    expect(host.connections).toHaveLength(1);
-    lifetime.abort();
-    h.lifetime.abort();
-  });
-
-  it("returns the projected handle after adding a host", async () => {
-    const h = registry();
-    h.source.addHost = async () => ({ status: "saved", serverId: "a" });
-    const result = await h.runtime.addHost({ connection: "tcp://example:6767?password=secret" });
-    expect(result.status).toBe("saved");
-    if (result.status !== "saved") throw new Error("expected saved host");
-    expect(result.host).toBe(h.runtime.getSnapshot()[0]);
-    expect(JSON.stringify(result)).not.toContain("secret");
-    h.lifetime.abort();
-    await expect(h.runtime.addHost({ connection: "example:6767" })).rejects.toThrow(
-      "Plugin has stopped",
-    );
-  });
-
-  it("passes cancellation and authentication results without exposing credentials", async () => {
-    const h = registry();
-    for (const result of [
-      { status: "cancelled" as const },
-      { status: "password_required" as const, reason: "incorrect_password" as const },
-    ]) {
-      h.source.addHost = async () => result;
-      const returned = await h.runtime.addHost({
-        connection: "tcp://example:6767?password=secret",
-      });
-      expect(returned).toEqual(result);
-      for (const [key, value] of Object.entries(returned)) {
-        expect(key).not.toBe("password");
-        expect(value).not.toBe("secret");
-      }
-    }
-    h.lifetime.abort();
-  });
-
-  it("redacts encoded saved passwords in mutation errors", async () => {
-    const h = registry();
-    h.hosts[0].password = "two words";
-    h.source.renameHost = async () => {
-      throw new Error("failed for two%20words");
-    };
-    await expect(h.runtime.getSnapshot()[0].update({ label: "New" })).rejects.not.toThrow(
-      "two%20words",
-    );
-    h.lifetime.abort();
-  });
-
-  it("never exposes supplied passwords in add errors", async () => {
-    const h = registry();
-    h.source.addHost = async () => {
-      throw new Error("secret was rejected");
-    };
-    await expect(
-      h.runtime.addHost({ connection: "tcp://example:6767?password=secret" }),
-    ).rejects.not.toThrow("secret");
-    h.lifetime.abort();
-  });
-
-  it("removes a connection and then the last host connection", async () => {
-    const h = registry();
-    const host = h.runtime.getSnapshot()[0];
-    await host.removeConnection("one");
-    expect(host.connections.map((item) => item.id)).toEqual(["two"]);
-    await host.removeConnection("two");
-    expect(h.runtime.getSnapshot().map((entry) => entry.serverId)).toEqual(["b"]);
-    h.lifetime.abort();
-  });
-
-  it("rejects removal of the managed desktop daemon", async () => {
-    const h = registry();
-    const lifetime = new AbortController();
-    const runtime = createPluginHosts(h.source, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async (id) => id === "a",
-    });
-    await expect(runtime.getSnapshot()[0].remove()).rejects.toThrow("desktop daemon");
-    expect(runtime.getSnapshot()).toHaveLength(2);
-    lifetime.abort();
-    h.lifetime.abort();
-  });
-
-  it("protects the desktop host after its daemon has stopped", async () => {
-    const h = registry();
-    const lifetime = new AbortController();
-    const runtime = createPluginHosts(h.source, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async (id) =>
-        id ===
-        (await resolveDesktopDaemonServerId({
-          getStatus: async () => {
-            throw new Error("daemon stopped");
-          },
-          getSavedId: async () => "a",
-        })),
-    });
-    await expect(runtime.getSnapshot()[0].remove()).rejects.toThrow("desktop daemon");
-    expect(runtime.getSnapshot()).toHaveLength(2);
-    lifetime.abort();
-    h.lifetime.abort();
-  });
-
   it("rejects unknown and disconnected targets without falling through to another host", () => {
     const h = registry();
     h.snapshots.set("a", { connectionStatus: "online", client: connection("a") });
@@ -299,10 +82,7 @@ describe("plugin host access", () => {
     h.snapshots.set("b", { connectionStatus: "online", client });
     h.publish();
     const otherLifetime = new AbortController();
-    const other = createPluginHosts(h.source, otherLifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
+    const other = createPluginHosts(h.source, otherLifetime.signal);
     const api = h.runtime.getPaseoClient("b");
     expect(api).toBe(h.runtime.getPaseoClient("b"));
     expect(api).not.toBe(other.getPaseoClient("b"));

packages/app/src/plugins/hosts/index.ts

@@ -1,288 +1,31 @@
 import { createPaseoApi, type PaseoApi } from "@getpaseo/client";
 import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
-import type {
-  PluginHost,
-  PluginHostConnection,
-  PluginHostPatch,
-  PluginHostAddInput,
-  PluginHostAddResult,
-} from "@getpaseo/plugin/client";
-import type { HostProfile } from "@/types/host-connection";
-import type { HostRuntimeSnapshot } from "@/runtime/host-runtime";
-import {
-  parseHostPort,
-  serializeConnectionUri,
-  serializeRelayConnectionUri,
-  shouldUseTlsForDefaultHostedRelay,
-} from "@getpaseo/protocol/daemon-endpoints";
-import { parseHostTarget, serializeSocketHostTarget } from "@getpaseo/protocol/host-target";
-import {
-  DEFAULT_SSH_DAEMON_PORT,
-  serializeSshTransportUri,
-} from "@getpaseo/protocol/ssh-transport";
+import type { PluginHostSummary } from "@getpaseo/plugin/client";
 
-type HostSnapshot = Pick<
-  HostRuntimeSnapshot,
-  | "connectionStatus"
-  | "client"
-  | "activeConnectionId"
-  | "lastError"
-  | "authFailureReason"
-  | "lastOnlineAt"
->;
 export interface PluginHostsSource {
-  addHost(
-    input: PluginHostAddInput,
-    signal?: AbortSignal,
-  ): Promise<
-    | { status: "saved"; serverId: string }
-    | { status: "password_required"; reason: "password_required" | "incorrect_password" }
-    | { status: "cancelled" }
-  >;
-  getHosts(): readonly HostProfile[];
-  getSnapshot(serverId: string): HostSnapshot | null;
+  getHosts(): readonly { serverId: string; label: string }[];
+  getSnapshot(serverId: string): {
+    connectionStatus: PluginHostSummary["status"];
+    client: DaemonClient | null;
+  } | null;
   subscribeAll(listener: () => void): () => void;
   subscribeHostList(listener: () => void): () => void;
-  renameHost(serverId: string, label: string): Promise<void>;
-  setHostColor(serverId: string, color: PluginHost["appearance"]["color"]): Promise<void>;
-  setHostBadgeDisplay(
-    serverId: string,
-    badge: PluginHost["appearance"]["badgeDisplay"],
-  ): Promise<void>;
-  removeHost(serverId: string): Promise<void>;
-  removeConnection(serverId: string, connectionId: string): Promise<void>;
-}
-function redactSecret(message: string, secret: string | undefined): string {
-  if (!secret) return message;
-  for (const value of [
-    secret,
-    encodeURIComponent(secret),
-    new URLSearchParams({ password: secret }).toString().slice(9),
-  ]) {
-    message = message.split(value).join("[redacted]");
-  }
-  return message;
-}
-type ProjectedHost = Omit<PluginHost, "update" | "remove" | "removeConnection" | "openSettings">;
-function projectHost(profile: HostProfile, snapshot: HostSnapshot | null): ProjectedHost {
-  const connections: PluginHostConnection[] = profile.connections.map((connection) => {
-    switch (connection.type) {
-      case "directTcp":
-        return {
-          id: connection.id,
-          type: connection.type,
-          endpoint: connection.endpoint,
-          useTls: connection.useTls ?? false,
-          uri: serializeConnectionUri({
-            ...parseHostPort(connection.endpoint),
-            useTls: connection.useTls ?? false,
-          }),
-        };
-      case "directSocket":
-        return {
-          id: connection.id,
-          type: connection.type,
-          path: connection.path,
-          uri: serializeSocketHostTarget("unix", connection.path),
-        };
-      case "directPipe":
-        return {
-          id: connection.id,
-          type: connection.type,
-          path: connection.path,
-          uri: serializeSocketHostTarget("pipe", connection.path),
-        };
-      case "remoteSsh":
-        return {
-          id: connection.id,
-          type: connection.type,
-          host: connection.host,
-          ...(connection.sshPort === undefined ? {} : { sshPort: connection.sshPort }),
-          ...(connection.daemonPort === undefined ? {} : { daemonPort: connection.daemonPort }),
-          uri: serializeSshTransportUri({
-            host: connection.host,
-            sshPort: connection.sshPort,
-            daemonPort: connection.daemonPort ?? DEFAULT_SSH_DAEMON_PORT,
-          }),
-        };
-      case "relay": {
-        const useTls =
-          connection.useTls ?? shouldUseTlsForDefaultHostedRelay(connection.relayEndpoint);
-        return {
-          id: connection.id,
-          type: connection.type,
-          relayEndpoint: connection.relayEndpoint,
-          useTls,
-          daemonPublicKeyB64: connection.daemonPublicKeyB64,
-          ...(connection.minimumSecurityMode
-            ? { minimumSecurityMode: connection.minimumSecurityMode }
-            : {}),
-          uri: serializeRelayConnectionUri({
-            offer: {
-              v: 2,
-              serverId: profile.serverId,
-              daemonPublicKeyB64: connection.daemonPublicKeyB64,
-              relay: { endpoint: connection.relayEndpoint, useTls },
-              ...(connection.minimumSecurityMode
-                ? { minimumSecurityMode: connection.minimumSecurityMode }
-                : {}),
-            },
-          }),
-        };
-      }
-      case "routed":
-        return {
-          id: connection.id,
-          type: connection.type,
-          originServerId: connection.originServerId,
-          uri: null,
-        };
-    }
-  });
-  const error = snapshot?.lastError ?? null;
-  return {
-    serverId: profile.serverId,
-    label: profile.label,
-    status: snapshot?.connectionStatus ?? "offline",
-    appearance: { color: profile.appearance.color, badgeDisplay: profile.appearance.badgeDisplay },
-    connections,
-    activeConnectionId: snapshot?.activeConnectionId ?? null,
-    error: error ? redactSecret(error, profile.password) : null,
-    authFailureReason: snapshot?.authFailureReason ?? null,
-    lastOnlineAt: snapshot?.lastOnlineAt ?? null,
-    createdAt: profile.createdAt,
-    updatedAt: profile.updatedAt,
-  };
 }
 
 /** Each evaluated installation owns its borrowed APIs and registry subscriptions. */
-export function createPluginHosts(
-  source: PluginHostsSource,
-  signal: AbortSignal,
-  options: {
-    openSettings(serverId: string): void;
-    isManagedLocalHost(serverId: string): Promise<boolean>;
-  },
-) {
+export function createPluginHosts(source: PluginHostsSource, signal: AbortSignal) {
   const clients = new Map<
     string,
     { client: DaemonClient; api: PaseoApi; lifetime: AbortController }
   >();
   const listeners = new Set<() => void>();
-  let snapshot: readonly PluginHost[] = [];
-  let serialized = "";
-  const entries = new Map<string, { data: ProjectedHost; handle: PluginHost }>();
-  function assertHost(id: string) {
-    if (signal.aborted) throw new Error("Plugin has stopped");
-    if (!source.getHosts().some((host) => host.serverId === id))
-      throw new Error(`Unknown Paseo host: ${id}`);
-  }
-  async function perform(id: string, action: () => Promise<void>): Promise<void> {
-    const secret = source.getHosts().find((host) => host.serverId === id)?.password;
-    try {
-      await action();
-    } catch (error) {
-      const message = error instanceof Error ? error.message : String(error);
-      // A cause would expose the original error, including any password.
-      // oxlint-disable-next-line preserve-caught-error
-      throw new Error(redactSecret(message, secret));
-    }
-  }
-  function readHosts(): { hosts: PluginHost[]; key: string } {
-    const projected = source
-      .getHosts()
-      .map((profile) => projectHost(profile, source.getSnapshot(profile.serverId)));
-    const ids = new Set(projected.map((host) => host.serverId));
-    for (const id of entries.keys()) if (!ids.has(id)) entries.delete(id);
-    const hosts = projected.map((data) => {
-      let entry = entries.get(data.serverId);
-      if (!entry) {
-        const id = data.serverId;
-        const read = () => entry!.data;
-        const handle: PluginHost = {
-          get serverId() {
-            return read().serverId;
-          },
-          get label() {
-            return read().label;
-          },
-          get status() {
-            return read().status;
-          },
-          get appearance() {
-            return read().appearance;
-          },
-          get connections() {
-            return read().connections;
-          },
-          get activeConnectionId() {
-            return read().activeConnectionId;
-          },
-          get error() {
-            return read().error;
-          },
-          get authFailureReason() {
-            return read().authFailureReason;
-          },
-          get lastOnlineAt() {
-            return read().lastOnlineAt;
-          },
-          get createdAt() {
-            return read().createdAt;
-          },
-          get updatedAt() {
-            return read().updatedAt;
-          },
-          async update(patch: PluginHostPatch) {
-            await perform(id, async () => {
-              assertHost(id);
-              if (patch.label !== undefined) await source.renameHost(id, patch.label);
-              if (patch.appearance?.color !== undefined) {
-                assertHost(id);
-                await source.setHostColor(id, patch.appearance.color);
-              }
-              if (patch.appearance?.badgeDisplay !== undefined) {
-                assertHost(id);
-                await source.setHostBadgeDisplay(id, patch.appearance.badgeDisplay);
-              }
-            });
-          },
-          async remove() {
-            await perform(id, async () => {
-              assertHost(id);
-              if (await options.isManagedLocalHost(id))
-                throw new Error("Cannot remove the desktop daemon host");
-              assertHost(id);
-              await source.removeHost(id);
-            });
-          },
-          async removeConnection(connectionId) {
-            await perform(id, async () => {
-              assertHost(id);
-              const isManaged = await options.isManagedLocalHost(id);
-              assertHost(id);
-              const host = source.getHosts().find((candidate) => candidate.serverId === id)!;
-              if (
-                isManaged &&
-                host.connections.length === 1 &&
-                host.connections[0].id === connectionId
-              ) {
-                throw new Error("Cannot remove the desktop daemon host");
-              }
-              await source.removeConnection(id, connectionId);
-            });
-          },
-          openSettings() {
-            assertHost(id);
-            options.openSettings(id);
-          },
-        };
-        entry = { data, handle };
-        entries.set(id, entry);
-      } else entry.data = data;
-      return entry.handle;
-    });
-    return { hosts, key: JSON.stringify(projected) };
+  let snapshot: readonly PluginHostSummary[] = [];
+  function readHosts(): readonly PluginHostSummary[] {
+    return source.getHosts().map(({ serverId, label }) => ({
+      serverId,
+      label,
+      status: source.getSnapshot(serverId)?.connectionStatus ?? "offline",
+    }));
   }
   function resolve(serverId: string): DaemonClient {
     if (signal.aborted) throw new Error("Plugin has stopped");
@@ -306,16 +49,11 @@ export function createPluginHosts(
       }
     }
     const next = readHosts();
-    if (serialized === next.key) return;
-    serialized = next.key;
-    snapshot = next.hosts;
+    if (JSON.stringify(snapshot) === JSON.stringify(next)) return;
+    snapshot = next;
     for (const listener of listeners) listener();
   }
-  {
-    const initial = readHosts();
-    snapshot = initial.hosts;
-    serialized = initial.key;
-  }
+  snapshot = readHosts();
   const unsubscribeRuntime = source.subscribeAll(refresh);
   const unsubscribeHosts = source.subscribeHostList(refresh);
   function stop() {
@@ -329,46 +67,6 @@ export function createPluginHosts(
   else signal.addEventListener("abort", stop, { once: true });
   return {
     getSnapshot: () => snapshot,
-    async addHost(input: PluginHostAddInput): Promise<PluginHostAddResult> {
-      if (signal.aborted) throw new Error("Plugin has stopped");
-      let result: Awaited<ReturnType<PluginHostsSource["addHost"]>>;
-      try {
-        result = await source.addHost(input, signal);
-      } catch (error) {
-        let secret: string | undefined;
-        try {
-          secret = parseHostTarget(input.connection).password;
-        } catch {
-          /* Invalid input has no parsed password. */
-        }
-        const message = redactSecret(
-          error instanceof Error ? error.message : String(error),
-          secret,
-        );
-        // The original error can contain the supplied credential.
-        // oxlint-disable-next-line preserve-caught-error
-        throw new Error(message);
-      }
-      if (result.status !== "saved") return result;
-      const host = snapshot.find((item) => item.serverId === result.serverId);
-      if (!host) throw new Error(`Unknown Paseo host: ${result.serverId}`);
-      return { status: "saved", host };
-    },
-    observeHosts(listener: (hosts: readonly PluginHost[]) => void) {
-      if (signal.aborted) throw new Error("Plugin has stopped");
-      const notify = () => {
-        try {
-          listener(snapshot);
-        } catch (error) {
-          console.error("[Plugins] Host observer failed", error);
-        }
-      };
-      listeners.add(notify);
-      notify();
-      return () => {
-        listeners.delete(notify);
-      };
-    },
     subscribe(listener: () => void) {
       if (signal.aborted) return () => {};
       listeners.add(listener);

packages/app/src/plugins/installation-provider.test.tsx

@@ -29,6 +29,9 @@ function installation(invoked: string[]): InstalledPlugin {
       invoked.push(method);
       return { state: "green" };
     },
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     queryClient: new QueryClient(),
     cleanup: () => undefined,
     settingsScreens: [],

packages/app/src/plugins/installation-provider.tsx

@@ -18,7 +18,7 @@ export function PluginInstallationProvider({
   return (
     <QueryClientProvider client={plugin.queryClient}>
       <PaseoApiProvider paseo={plugin.paseo}>
-        <PluginRpcProvider invoke={plugin.invoke}>
+        <PluginRpcProvider invoke={plugin.invoke} subscribe={plugin.subscribe}>
           <PluginTranslationProvider runtime={plugin.i18n}>{children}</PluginTranslationProvider>
         </PluginRpcProvider>
       </PaseoApiProvider>

packages/app/src/plugins/navigation.ts

@@ -1,4 +1,3 @@
-import { buildSettingsHostRoute } from "@/utils/host-routes";
 import { buildPluginSettingsRoute } from "./settings/routes";
 import { router } from "expo-router";
 import type { PluginPanelLocation } from "@getpaseo/plugin/client";
@@ -10,7 +9,7 @@ import type { PluginNavigation } from "./actions";
 export function createPluginNavigation(input: {
   serverId: string;
   workspaceId: string | null;
-}): PluginNavigation & { openHostSettings(serverId: string): void } {
+}): PluginNavigation {
   const { serverId, workspaceId } = input;
   function placement(location: PluginPanelLocation) {
     if (location !== "explorer") return undefined;
@@ -21,9 +20,6 @@ export function createPluginNavigation(input: {
     return { mode: "pane" as const, paneId };
   }
   return {
-    openHostSettings(hostId) {
-      router.push(buildSettingsHostRoute(hostId));
-    },
     openSettings(pluginId, screenId) {
       router.push(buildPluginSettingsRoute(serverId, pluginId, screenId));
     },

packages/app/src/plugins/registry-lifecycle.test.ts

@@ -43,19 +43,12 @@ function registry(
       return {
         hosts: createPluginHosts(
           {
-            addHost: async () => ({ status: "cancelled" }),
             getHosts: () => [],
             getSnapshot: () => null,
             subscribeAll: () => () => {},
             subscribeHostList: () => () => {},
-            renameHost: async () => {},
-            setHostColor: async () => {},
-            setHostBadgeDisplay: async () => {},
-            removeHost: async () => {},
-            removeConnection: async () => {},
           },
           installation.lifetime.signal,
-          { openSettings() {}, isManagedLocalHost: async () => false },
         ),
         paseo: installation.paseo,
         i18n: installation.i18n,
@@ -69,6 +62,9 @@ function registry(
         openPanel: () => {},
         addComposerPill: () => ({ update() {}, remove() {} }),
         addHeaderButton: () => ({ update() {}, remove() {} }),
+        subscribe: () => {
+          throw new Error("Subscriptions are not used here");
+        },
       };
     },
   });

packages/app/src/plugins/registry-requirements.test.ts

@@ -18,19 +18,12 @@ function registry(version: string) {
       return {
         hosts: createPluginHosts(
           {
-            addHost: async () => ({ status: "cancelled" }),
             getHosts: () => [],
             getSnapshot: () => null,
             subscribeAll: () => () => {},
             subscribeHostList: () => () => {},
-            renameHost: async () => {},
-            setHostColor: async () => {},
-            setHostBadgeDisplay: async () => {},
-            removeHost: async () => {},
-            removeConnection: async () => {},
           },
           installation.lifetime.signal,
-          { openSettings() {}, isManagedLocalHost: async () => false },
         ),
         paseo: installation.paseo,
         i18n: installation.i18n,
@@ -46,6 +39,9 @@ function registry(version: string) {
         openPanel() {},
         addComposerPill: () => ({ update() {}, remove() {} }),
         addHeaderButton: () => ({ update() {}, remove() {} }),
+        subscribe: () => {
+          throw new Error("Subscriptions are not used here");
+        },
       };
     },
   });

packages/app/src/plugins/registry.ts

@@ -8,6 +8,7 @@ import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
 import { assertPluginCompatibility } from "@getpaseo/protocol/plugin-requirements";
 import { resolveAppVersion } from "@/utils/app-version";
 import { createPluginClientRuntime } from "./client-runtime";
+import { createPluginSubscribe } from "./subscriptions";
 import { runPluginClientBundle } from "./evaluate";
 import type { InstalledPlugin } from "./types";
 
@@ -89,12 +90,18 @@ export class PluginRegistry {
           return [existing];
         }
         const client = options.client;
+        const lifetime = new AbortController();
         installation = {
-          lifetime: new AbortController(),
+          lifetime,
           locale: this.dependencies.localeSource.getLocale(),
           i18n: new PluginTranslationRuntime(this.dependencies.localeSource),
           paseo: createPaseoApi(client),
           invoke: (method, input) => client.invokePluginRpc(entry.id, method, input),
+          subscribe: createPluginSubscribe({
+            client,
+            pluginId: entry.id,
+            lifetime: lifetime.signal,
+          }),
           id: entry.id,
           serverId,
           clientBundle: entry.clientBundle,

packages/app/src/plugins/sidebar-groups.test.ts

@@ -26,6 +26,9 @@ function installed(
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     settingsScreens: [],
     surfaces: [{ id: "surface", title: "Surface", Component: () => null }],
     sidebarItems: {

packages/app/src/plugins/subscriptions.test.ts

@@ -0,0 +1,189 @@
+import { defineSubscription } from "@getpaseo/plugin";
+import type { PluginSubscriptionClosed } from "@getpaseo/plugin/client";
+import { subscribePluginRpc } from "@getpaseo/plugin/client/host";
+import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
+import type { SubscriptionObserver } from "@getpaseo/client";
+import type { SessionOutboundMessage } from "@getpaseo/protocol/messages";
+import { expect, it } from "vitest";
+import { z } from "zod";
+import { createPluginSubscribe } from "./subscriptions";
+
+const changes = defineSubscription({
+  name: "diff.watch",
+  input: z.object({ ref: z.string() }),
+  event: z.union([z.instanceof(Uint8Array), z.object({ path: z.string() })]),
+});
+
+type Observed = Parameters<DaemonClient["observePluginRpc"]>;
+
+/** One host-side subscription as the daemon client exposes it, driven by the test. */
+class HostSubscription {
+  readonly released: Promise<void>;
+  isReleased = false;
+  private observer: SubscriptionObserver<never> | null = null;
+  private accept!: () => void;
+  private refuse!: (error: Error) => void;
+  private markReleased!: () => void;
+  readonly ready = new Promise<never>((resolve, reject) => {
+    this.accept = () => resolve({ requestId: "r", subscriptionId: "s" } as never);
+    this.refuse = reject;
+  });
+
+  constructor(
+    readonly method: string,
+    readonly input: unknown,
+    readonly signal: AbortSignal | undefined,
+  ) {
+    void this.ready.catch(() => undefined);
+    this.released = new Promise((resolve) => {
+      this.markReleased = resolve;
+    });
+    signal?.addEventListener("abort", () => void this.release(), { once: true });
+  }
+
+  handle() {
+    return {
+      subscriptionId: "s",
+      ready: this.ready,
+      subscribe: (observer: SubscriptionObserver<never>) => {
+        this.observer = observer;
+        return () => undefined;
+      },
+      release: () => this.release(),
+    };
+  }
+
+  acknowledge() {
+    this.accept();
+  }
+
+  refuseWith(error: Error) {
+    this.refuse(error);
+    this.observer?.error?.(error);
+  }
+
+  event(event: unknown) {
+    this.observer?.update({
+      type: "plugin.rpc.event",
+      payload: { subscriptionId: "s", event },
+    } as SessionOutboundMessage);
+  }
+
+  bytes(payload: Uint8Array) {
+    this.observer?.binary?.(payload);
+  }
+
+  closed(error?: string) {
+    this.observer?.update({
+      type: "plugin.rpc.closed",
+      payload: { subscriptionId: "s", ...(error ? { error } : {}) },
+    } as SessionOutboundMessage);
+  }
+
+  async release() {
+    this.isReleased = true;
+    this.markReleased();
+  }
+}
+
+/** An installation's subscribe on a host the test drives, and what one subscriber observed. */
+function installation() {
+  const subscriptions: HostSubscription[] = [];
+  const client = {
+    observePluginRpc: (...[pluginId, method, input, options]: Observed) => {
+      expect(pluginId).toBe("diffs");
+      const subscription = new HostSubscription(method, input, options?.signal);
+      subscriptions.push(subscription);
+      return subscription.handle() as unknown as ReturnType<DaemonClient["observePluginRpc"]>;
+    },
+  };
+  const lifetime = new AbortController();
+  const subscribe = createPluginSubscribe({ client, pluginId: "diffs", lifetime: lifetime.signal });
+  function open(ref: string, signal?: AbortSignal) {
+    const received: string[] = [];
+    const closed: PluginSubscriptionClosed[] = [];
+    const handle = subscribePluginRpc(
+      changes,
+      subscribe,
+      { ref },
+      (event) =>
+        received.push(event instanceof Uint8Array ? `bytes:${[...event]}` : `path:${event.path}`),
+      { signal, onClosed: (result) => closed.push(result) },
+    );
+    return { handle, received, closed, host: subscriptions[subscriptions.length - 1]! };
+  }
+  return { open, lifetime };
+}
+
+it("delivers JSON and byte events in order and releases the host subscription", async () => {
+  const { open } = installation();
+  const { handle, received, closed, host } = open("main");
+  expect(host.method).toBe("diff.watch");
+  expect(host.input).toEqual({ ref: "main" });
+  host.acknowledge();
+  await handle.ready;
+
+  host.event({ path: "a.ts" });
+  host.bytes(new Uint8Array([1, 2]));
+  expect(received).toEqual(["path:a.ts", "bytes:1,2"]);
+
+  handle();
+  await host.released;
+  expect(closed).toEqual([]);
+});
+
+it("reports a refusal, a failure after going live, and a clean close", async () => {
+  const { open } = installation();
+  const refused = open("a");
+  refused.host.refuseWith(new Error("no such ref"));
+  await expect(refused.handle.ready).rejects.toThrow("no such ref");
+  expect(refused.closed).toEqual([{ error: new Error("no such ref") }]);
+
+  const failed = open("b");
+  failed.host.acknowledge();
+  await failed.handle.ready;
+  failed.host.closed("Plugin stopped: diffs");
+  expect(failed.closed).toEqual([{ error: new Error("Plugin stopped: diffs") }]);
+  await failed.host.released;
+
+  // A handler that returns at once closes in the same tick the host accepts it.
+  const finished = open("c");
+  finished.host.acknowledge();
+  finished.host.closed();
+  await expect(finished.handle.ready).resolves.toBeUndefined();
+  expect(finished.closed).toEqual([{}]);
+});
+
+it("closes a subscription whose event fails the contract and drops what follows", async () => {
+  const { open } = installation();
+  const { handle, received, closed, host } = open("a");
+  host.acknowledge();
+  await handle.ready;
+  host.event({ path: 3 });
+  host.event({ path: "late.ts" });
+  expect(received).toEqual([]);
+  expect(closed).toEqual([
+    { error: new Error("Plugin subscription diff.watch sent an invalid event") },
+  ]);
+  await host.released;
+});
+
+it("releases on its signal, on its remover, and when the installation stops", async () => {
+  const { open, lifetime } = installation();
+  const controller = new AbortController();
+  const bySignal = open("a", controller.signal);
+  bySignal.host.acknowledge();
+  await bySignal.handle.ready;
+  controller.abort();
+  await bySignal.host.released;
+
+  const byRemover = open("b");
+  byRemover.handle();
+  await byRemover.host.released;
+
+  const byLifetime = open("c");
+  byLifetime.host.event({ path: "a.ts" });
+  expect(byLifetime.received).toEqual(["path:a.ts"]);
+  lifetime.abort();
+  await byLifetime.host.released;
+});

packages/app/src/plugins/subscriptions.ts

@@ -0,0 +1,52 @@
+import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
+import type { PluginSubscribe } from "@getpaseo/plugin/client/host";
+
+/**
+ * Plugin subscriptions on the installation's client. The client re-subscribes after a reconnect;
+ * the installation's lifetime releases whatever its surfaces left open.
+ */
+export function createPluginSubscribe(input: {
+  client: Pick<DaemonClient, "observePluginRpc">;
+  pluginId: string;
+  lifetime: AbortSignal;
+}): PluginSubscribe {
+  const { client, pluginId, lifetime } = input;
+  return (method, subscriptionInput, observer) => {
+    const controller = new AbortController();
+    const abort = () => controller.abort();
+    lifetime.addEventListener("abort", abort, { once: true });
+    controller.signal.addEventListener(
+      "abort",
+      () => lifetime.removeEventListener("abort", abort),
+      { once: true },
+    );
+    if (lifetime.aborted) controller.abort();
+    const subscription = client.observePluginRpc(pluginId, method, subscriptionInput, {
+      signal: controller.signal,
+    });
+    subscription.subscribe({
+      snapshot: () => undefined,
+      update: (message) => {
+        if (message.type === "plugin.rpc.event") observer.event(message.payload.event);
+        else if (message.type === "plugin.rpc.closed") {
+          controller.abort();
+          const error = message.payload.error;
+          observer.closed(error === undefined ? undefined : new Error(error));
+        }
+      },
+      binary: (payload) => observer.event(payload),
+      error: (error) => {
+        controller.abort();
+        observer.closed(error instanceof Error ? error : new Error(String(error)));
+      },
+    });
+    const release = () => {
+      controller.abort();
+      return subscription.release();
+    };
+    return Object.assign(() => void release().catch(() => undefined), {
+      ready: subscription.ready.then(() => undefined),
+      release,
+    });
+  };
+}

packages/app/src/plugins/surface-contribution.test.ts

@@ -26,6 +26,9 @@ function installation(
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     cleanup: () => undefined,
     settingsScreens: [],
     surfaces: surfaces.map((id) => ({ id, title: id, Component: () => null })),

packages/app/src/plugins/theme.test.ts

@@ -56,6 +56,9 @@ function installed(serverId: string, themes: PluginThemeContribution[]): Install
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     settingsScreens: [],
     surfaces: [],
     sidebarItems: { header: [], footer: [] },

packages/app/src/plugins/timeline/model.test.ts

@@ -18,6 +18,9 @@ function plugin(input: {
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     cleanup: () => {},
     settingsScreens: [],
     surfaces: [],

packages/app/src/plugins/timeline/projection.test.ts

@@ -14,6 +14,45 @@ function thought(text: string, status: "loading" | "ready" = "loading"): StreamI
 }
 
 describe("plugin timeline projection", () => {
+  it.each(["message", "finished", "errored", "permission-required", "closed"] as const)(
+    "preserves immutable agent-message provenance for %s cards",
+    (event) => {
+      const agentMessage = {
+        event,
+        sender: { id: "remote::reviewer", title: "QA question-timing #7014/#7000/#6809" },
+        text: "The original message, including **Markdown**.",
+      };
+      const source: StreamItem = {
+        kind: "tool_call",
+        id: "message-1",
+        timestamp: new Date("2026-01-01T00:00:00.000Z"),
+        payload: {
+          source: "agent",
+          data: {
+            provider: "codex",
+            callId: "delivery-1",
+            name: "agent_message",
+            status: "completed",
+            error: null,
+            detail: { type: "plain_text", text: agentMessage.text, icon: "bot" },
+            agentMessage,
+          },
+        },
+      };
+      const inspect: TimelineItemTransform = ({ item }) => {
+        expect(item.type).toBe("tool_call");
+        if (item.type !== "tool_call") throw new Error("Expected a tool call");
+        expect(item.agentMessage).toEqual(agentMessage);
+        expect(item.agentMessage).not.toBe(agentMessage);
+        expect(Object.isFrozen(item.agentMessage)).toBe(true);
+        expect(Object.isFrozen(item.agentMessage?.sender)).toBe(true);
+        return undefined;
+      };
+      expect(projectPluginTimelineItems([source], inspect)).toEqual([source]);
+      expect(Object.isFrozen(agentMessage.sender)).toBe(false);
+    },
+  );
+
   it("does not expose mutable tool detail from stream state", () => {
     const detail = { type: "read" as const, filePath: "/repo/original.ts" };
     const source: StreamItem = {

packages/app/src/plugins/timeline/projection.ts

@@ -22,13 +22,14 @@ function cloneAndFreeze<T>(value: T): T {
 }
 
 function sourceToolCallTimelineItem(data: AgentToolCallData): ToolCallTimelineItem {
-  const { callId, name, status, error, detail, metadata } = data;
+  const { callId, name, status, error, detail, metadata, agentMessage } = data;
   const base = {
     type: "tool_call" as const,
     callId,
     name,
     detail,
     ...(metadata ? { metadata } : {}),
+    ...(agentMessage ? { agentMessage } : {}),
   };
   switch (status) {
     case "running":

packages/app/src/plugins/types.ts

@@ -71,6 +71,8 @@ export interface InstalledPlugin extends EvaluatedPlugin {
   paseo: PaseoApi;
   /** Calls one of the plugin's server RPC methods on its host. */
   invoke(method: string, input: unknown): Promise<unknown>;
+  /** Subscribes to one of the plugin's server subscriptions; released with the lifetime. */
+  subscribe: import("@getpaseo/plugin/client/host").PluginSubscribe;
   serverId: string;
   requirements?: PluginRequirements;
   clientBundle: string;

packages/app/src/plugins/workspace-panels/resolution.test.ts

@@ -15,6 +15,9 @@ function installed(): InstalledPlugin {
     queryClient: new QueryClient(),
     paseo: {} as InstalledPlugin["paseo"],
     invoke: async () => undefined,
+    subscribe: () => {
+      throw new Error("Subscriptions are not used here");
+    },
     cleanup: () => {},
     settingsScreens: [],
     surfaces: [],

packages/app/src/runtime/host-confirmation.ts

@@ -55,38 +55,24 @@ export class HostConfirmations {
   }
 
   /** Resolves true without asking when the link matches a saved host exactly. */
-  confirmLink(
-    offer: ConnectionOffer,
-    savedHosts: HostProfile[],
-    signal?: AbortSignal,
-  ): Promise<boolean> {
+  confirmLink(offer: ConnectionOffer, savedHosts: HostProfile[]): Promise<boolean> {
     const connection = relayConnectionFromOffer(offer);
     const savedHost = savedHosts.find((host) => host.serverId === offer.serverId);
     if (savedHost && hostHasConnection(savedHost, connection)) return Promise.resolve(true);
-    if (signal?.aborted) return Promise.resolve(false);
-    return this.ask(
-      {
-        id: this.nextRequestId++,
-        serverId: offer.serverId,
-        keyFingerprint: formatDaemonKeyFingerprint(connection.daemonPublicKeyB64),
-        relayEndpoint: connection.relayEndpoint,
-        kind: savedHost ? "changedConnection" : "newHost",
-      },
-      signal,
-    );
+    return this.ask({
+      id: this.nextRequestId++,
+      serverId: offer.serverId,
+      keyFingerprint: formatDaemonKeyFingerprint(connection.daemonPublicKeyB64),
+      relayEndpoint: connection.relayEndpoint,
+      kind: savedHost ? "changedConnection" : "newHost",
+    });
   }
 
-  private ask(request: HostConfirmationRequest, signal?: AbortSignal): Promise<boolean> {
+  private ask(request: HostConfirmationRequest): Promise<boolean> {
     // One question at a time: a newer one cancels the unanswered one.
     this.pending?.resolve(false);
     return new Promise<boolean>((resolve) => {
-      const cancel = () => this.answer(request.id, false);
-      const finish = (approved: boolean) => {
-        signal?.removeEventListener("abort", cancel);
-        resolve(approved);
-      };
-      this.pending = { request, resolve: finish };
-      signal?.addEventListener("abort", cancel, { once: true });
+      this.pending = { request, resolve };
       this.emit();
     });
   }

packages/app/src/runtime/host-runtime.test.ts

@@ -16,7 +16,7 @@ import type { ConnectionOffer } from "@getpaseo/protocol/connection-offer";
 import type { SessionOutboundMessage } from "@getpaseo/protocol/messages";
 import type { AgentPermissionRequest } from "@getpaseo/protocol/agent-types";
 import type { HostConnection, HostProfile } from "@/types/host-connection";
-import { defaultHostAppearance, selectHostBadges } from "@/hosts/appearance";
+import { defaultHostAppearance } from "@/hosts/appearance";
 import { useSessionStore, type Agent } from "@/stores/session-store";
 import { normalizeAgentSnapshot } from "@/utils/agent-snapshots";
 import { isAgentArchiving, setAgentArchiving } from "@/hooks/use-archive-agent";
@@ -33,7 +33,6 @@ import type { ReplicaRow, ReplicaRowStore } from "./replica-cache/row-store";
 import { subscriptionFixture } from "./subscription-fixture";
 import { readDesktopManagedLocalCredential } from "@/desktop/daemon/local-credential";
 import type { HostConfirmationRequest } from "./host-confirmation";
-import { createPluginHosts } from "@/plugins/hosts";
 
 it("requests the managed connection credential through desktop main without a web hint", async () => {
   const requests: string[] = [];
@@ -4779,295 +4778,3 @@ describe("HostRuntimeStore initial connection hint bootstrap", () => {
     expect(store.getHosts()).toHaveLength(0);
   });
 });
-
-describe("adding hosts from plugin connection targets", () => {
-  it("does not save an unauthenticated target and retries with the password", async () => {
-    const store = createPairingStore({ password: "secret", serverIdForHost: () => "srv_direct" });
-    const requests = answerHostConfirmations(store, true);
-    expect(await store.addHost({ connection: "example.com:6767" })).toEqual({
-      status: "password_required",
-      reason: "password_required",
-    });
-    expect(store.getHosts()).toHaveLength(0);
-    expect(
-      await store.addHost({ connection: "tcp://example.com:6767?password=secret", label: "Build" }),
-    ).toEqual({ status: "saved", serverId: "srv_direct" });
-    expect(store.getHosts()[0]).toMatchObject({
-      label: "Build",
-      password: "secret",
-      connections: [{ type: "directTcp", endpoint: "example.com:6767" }],
-    });
-    expect(requests).toHaveLength(0);
-    await waitForHostOnline(store, "srv_direct");
-    store.syncHosts([]);
-  });
-  it("persists the supplied password and reconnects after the app restarts", async () => {
-    const storage = createMemoryHostRuntimeStorage({ "@paseo:e2e": "1" });
-    const first = createPairingStore({
-      storage,
-      password: "secret",
-      serverIdForHost: () => "srv_direct",
-    });
-    const lifetime = new AbortController();
-    const plugin = createPluginHosts(first, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    const result = await plugin.addHost({ connection: "tcp://example.com:6767?password=secret" });
-    expect(result.status).toBe("saved");
-    expect(JSON.stringify(result)).not.toContain("secret");
-    const persisted = JSON.parse((await storage.getItem("@paseo:daemon-registry")) ?? "[]");
-    expect(persisted[0].password).toBe("secret");
-    lifetime.abort();
-    first.syncHosts([]);
-
-    const attempts: string[] = [];
-    const restarted = createPairingStore({
-      storage,
-      password: "secret",
-      connectAttempts: attempts,
-      serverIdForHost: () => "srv_direct",
-    });
-    await restarted.boot();
-    await waitForHostOnline(restarted, "srv_direct");
-    expect(attempts).toContain("direct:example.com:6767");
-    expect(restarted.getHosts()[0].password).toBe("secret");
-    const restartedLifetime = new AbortController();
-    const restartedPlugin = createPluginHosts(restarted, restartedLifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    expect(JSON.stringify(restartedPlugin.getSnapshot())).not.toContain("secret");
-    restartedLifetime.abort();
-    restarted.syncHosts([]);
-  });
-
-  it("asks before saving a relay target and respects rejection", async () => {
-    const uri = "relay://relay.paseo.sh:443/srv_offer?key=pk_test_offer&ssl=true";
-    const rejected = createPairingStore();
-    const requests = answerHostConfirmations(rejected, false);
-    expect(await rejected.addHost({ connection: uri })).toEqual({ status: "cancelled" });
-    expect(requests).toHaveLength(1);
-    expect(rejected.getHosts()).toHaveLength(0);
-    const accepted = createPairingStore();
-    const acceptedRequests = answerHostConfirmations(accepted, true);
-    expect(await accepted.addHost({ connection: uri, label: "Relay" })).toEqual({
-      status: "saved",
-      serverId: "srv_offer",
-    });
-    expect(acceptedRequests).toHaveLength(1);
-    expect(accepted.getHosts()[0]).toMatchObject({
-      label: "Relay",
-      connections: [{ type: "relay" }],
-    });
-    accepted.syncHosts([]);
-  });
-  it.each([
-    ["ssh://deploy@build:2222?daemonPort=7777", "remoteSsh"],
-    ["unix:///tmp/paseo.sock", "directSocket"],
-    ["pipe://mypipe", "directPipe"],
-    ["wss://example.com/ws", "directTcp"],
-  ])("probes and saves %s", async (connection, type) => {
-    const store = createPairingStore({ serverIdForHost: () => "srv_target" });
-    expect(await store.addHost({ connection })).toEqual({
-      status: "saved",
-      serverId: "srv_target",
-    });
-    expect(store.getHosts()[0].connections[0].type).toBe(type);
-    store.syncHosts([]);
-  });
-  it("shares host changes between plugin handles, host settings, and sidebar badges", async () => {
-    const store = createPairingStore({
-      serverIdForHost: (host) => {
-        const connection = host.connections[0];
-        return connection?.type === "directTcp" ? connection.endpoint : "";
-      },
-    });
-    await store.addHost({ connection: "first:6767", label: "First" });
-    await store.addHost({ connection: "second:6767", label: "Second" });
-    await waitForHostOnline(store, "first:6767");
-    await waitForHostOnline(store, "second:6767");
-    const lifetime = new AbortController();
-    const plugin = createPluginHosts(store, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    expect(
-      plugin.getSnapshot().map((host) => [host.label, host.status, host.connections[0].uri]),
-    ).toEqual([
-      ["First", "online", "tcp://first:6767"],
-      ["Second", "online", "tcp://second:6767"],
-    ]);
-    await plugin.getSnapshot()[0].update({ label: "Build", appearance: { color: "sky" } });
-    expect(store.getHosts()[0]).toMatchObject({ label: "Build", appearance: { color: "sky" } });
-    expect(
-      selectHostBadges({ hosts: store.getHosts(), localServerId: null, enabled: true }).get(
-        "first:6767",
-      ),
-    ).toMatchObject({ label: "Build", color: "sky" });
-    lifetime.abort();
-    store.syncHosts([]);
-  });
-
-  it.each([
-    "tcp://example.com:6767?ssl=true",
-    "ssh://deploy@build:2222?daemonPort=7777",
-    "unix:///tmp/paseo.sock",
-    "relay://relay.paseo.sh:443/srv_offer?key=pk_test_offer&ssl=true",
-  ])("recreates the projected connection on another device: %s", async (connection) => {
-    const first = createPairingStore({ serverIdForHost: (host) => host.serverId || "srv_target" });
-    answerHostConfirmations(first, true);
-    const result = await first.addHost({ connection });
-    if (result.status !== "saved") throw new Error("expected saved host");
-    const lifetime = new AbortController();
-    const plugin = createPluginHosts(first, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    const uri = plugin.getSnapshot().find((host) => host.serverId === result.serverId)
-      ?.connections[0].uri;
-    if (!uri) throw new Error("expected connection URI");
-    const second = createPairingStore({ serverIdForHost: (host) => host.serverId || "srv_target" });
-    answerHostConfirmations(second, true);
-    expect(await second.addHost({ connection: uri })).toEqual({
-      status: "saved",
-      serverId: result.serverId,
-    });
-    expect(second.getHosts()[0].connections).toEqual(first.getHosts()[0].connections);
-    lifetime.abort();
-    first.syncHosts([]);
-    second.syncHosts([]);
-  });
-
-  it("does not save an in-flight addition after its plugin stops", async () => {
-    const started = createDeferred<void>();
-    const probe = createDeferred<{
-      client: DaemonClient;
-      serverId: string;
-      hostname: string | null;
-    }>();
-    const store = new HostRuntimeStore({
-      storage: createMemoryHostRuntimeStorage(),
-      deps: {
-        createClient: () => new FakeDaemonClient() as unknown as DaemonClient,
-        connectToDaemon: async () => {
-          started.resolve(undefined);
-          return probe.promise;
-        },
-        getClientId: async () => "test",
-        readInitialConnectionHint: () => null,
-      },
-    });
-    const lifetime = new AbortController();
-    const plugin = createPluginHosts(store, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    const adding = plugin.addHost({ connection: "example.com:6767" });
-    await started.promise;
-    lifetime.abort();
-    probe.resolve({
-      client: makeConnectedProbeClient(5) as unknown as DaemonClient,
-      serverId: "srv",
-      hostname: null,
-    });
-    await expect(adding).rejects.toThrow("Plugin has stopped");
-    expect(store.getHosts()).toHaveLength(0);
-    store.syncHosts([]);
-  });
-
-  it("reports a stopped plugin when an aborted probe rejects authentication", async () => {
-    const started = createDeferred<void>();
-    const probe = createDeferred<{
-      client: DaemonClient;
-      serverId: string;
-      hostname: string | null;
-    }>();
-    const store = new HostRuntimeStore({
-      storage: createMemoryHostRuntimeStorage(),
-      deps: {
-        createClient: () => new FakeDaemonClient() as unknown as DaemonClient,
-        connectToDaemon: async () => {
-          started.resolve(undefined);
-          return probe.promise;
-        },
-        getClientId: async () => "test",
-        readInitialConnectionHint: () => null,
-      },
-    });
-    const lifetime = new AbortController();
-    const plugin = createPluginHosts(store, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    const adding = plugin.addHost({ connection: "example.com:6767" });
-    await started.promise;
-    lifetime.abort();
-    probe.reject(new DaemonAuthenticationError("password_required"));
-    await expect(adding).rejects.toThrow("Plugin has stopped");
-    expect(store.getHosts()).toHaveLength(0);
-    store.syncHosts([]);
-  });
-
-  it("dismisses an unanswered confirmation when the plugin stops", async () => {
-    const store = createPairingStore();
-    const lifetime = new AbortController();
-    const plugin = createPluginHosts(store, lifetime.signal, {
-      openSettings() {},
-      isManagedLocalHost: async () => false,
-    });
-    const pending = createDeferred<void>();
-    const unsubscribe = store.subscribeHostConfirmation(() => {
-      if (store.getPendingHostConfirmation()) pending.resolve(undefined);
-    });
-    const adding = plugin.addHost({
-      connection: "relay://relay.paseo.sh:443/srv_offer?key=pk_test_offer&ssl=true",
-    });
-    await pending.promise;
-    lifetime.abort();
-    await expect(adding).rejects.toThrow("Plugin has stopped");
-    expect(store.getPendingHostConfirmation()).toBeNull();
-    expect(store.getHosts()).toHaveLength(0);
-    unsubscribe();
-    store.syncHosts([]);
-  });
-
-  it("returns incorrect_password without saving and redacts failed probe errors", async () => {
-    let failure: "auth" | "network" = "auth";
-    const store = new HostRuntimeStore({
-      storage: createMemoryHostRuntimeStorage(),
-      deps: {
-        createClient: () => new FakeDaemonClient() as unknown as DaemonClient,
-        connectToDaemon: async () => {
-          if (failure === "auth") throw new DaemonAuthenticationError("incorrect_password");
-          throw new Error("connection failed for secret");
-        },
-        getClientId: async () => "test",
-        readInitialConnectionHint: () => null,
-      },
-    });
-    expect(await store.addHost({ connection: "tcp://example.com:6767?password=secret" })).toEqual({
-      status: "password_required",
-      reason: "incorrect_password",
-    });
-    expect(store.getHosts()).toHaveLength(0);
-    failure = "network";
-    await expect(
-      store.addHost({ connection: "tcp://example.com:6767?password=secret" }),
-    ).rejects.not.toThrow("secret");
-    expect(store.getHosts()).toHaveLength(0);
-    store.syncHosts([]);
-  });
-
-  it("rejects websocket paths and query options the app cannot represent", async () => {
-    const store = createPairingStore();
-    await expect(store.addHost({ connection: "wss://example.com/custom" })).rejects.toThrow(
-      "unsupported",
-    );
-    await expect(
-      store.addHost({ connection: "wss://example.com/ws?token=secret" }),
-    ).rejects.toThrow("unsupported");
-    expect(store.getHosts()).toHaveLength(0);
-    store.syncHosts([]);
-  });
-});

packages/app/src/runtime/host-runtime.ts

@@ -3,7 +3,6 @@ import { watchdog } from "@/watchdog";
 import { createHostChannelTransport } from "@getpaseo/client/internal/hosts";
 import type { OwnedSubscription } from "@getpaseo/client";
 import type { HostDirectory } from "@getpaseo/protocol/hosts";
-import { parseHostTarget, type HostTarget } from "@getpaseo/protocol/host-target";
 import { useSyncExternalStore, useMemo } from "react";
 import AsyncStorage from "@react-native-async-storage/async-storage";
 import equal from "fast-deep-equal/es6";
@@ -1613,48 +1612,6 @@ interface AgentDirectoryRefreshInput {
   page?: FetchAgentsOptions["page"];
 }
 
-function directHostTarget(target: HostTarget, input: string): HostConnection {
-  let connection: HostConnection;
-  if (target.kind === "ssh") {
-    connection = createRemoteSshHostConnection(target.ssh);
-  } else {
-    if (/^wss?:\/\//.test(input.trim())) {
-      const url = new URL(target.url);
-      if (url.pathname !== "/ws" || url.search)
-        throw new Error("WebSocket path or query is unsupported by the app");
-    }
-    switch (target.connection.type) {
-      case "directTcp": {
-        const endpoint = normalizeHostPort(target.connection.endpoint);
-        connection = {
-          id: `direct:${endpoint}`,
-          type: "directTcp",
-          endpoint,
-          useTls: target.connection.useTls,
-        };
-        break;
-      }
-      case "directSocket":
-        connection = {
-          id: `socket:${target.connection.path}`,
-          type: "directSocket",
-          path: target.connection.path,
-        };
-        break;
-      case "directPipe":
-        connection = {
-          id: `pipe:${target.connection.path}`,
-          type: "directPipe",
-          path: target.connection.path,
-        };
-        break;
-      case "relay":
-        throw new Error("Unexpected relay target");
-    }
-  }
-  return connection;
-}
-
 export class HostRuntimeStore {
   private controllers = new Map<string, HostRuntimeController>();
   private hostObservations = new Map<
@@ -2007,66 +1964,6 @@ export class HostRuntimeStore {
     );
   }
 
-  /** Add a saved host using the shared connection grammar. */
-  async addHost(
-    input: {
-      connection: string;
-      label?: string;
-    },
-    signal?: AbortSignal,
-  ): Promise<
-    | { status: "saved"; serverId: string }
-    | { status: "password_required"; reason: "password_required" | "incorrect_password" }
-    | { status: "cancelled" }
-  > {
-    const target = parseHostTarget(input.connection);
-    await this.loadRegistry();
-    try {
-      if (signal?.aborted) throw new Error("Plugin has stopped");
-      if (target.kind === "socket" && target.connection.type === "relay") {
-        const approved = await this.confirmLink(target.connection.offer, signal);
-        if (signal?.aborted) throw new Error("Plugin has stopped");
-        if (!approved) return { status: "cancelled" };
-        const result = await this.probeAndUpsertOffer(
-          target.connection.offer,
-          target.password,
-          input.label,
-          signal,
-        );
-        return { status: "saved", serverId: result.serverId };
-      }
-      const connection = directHostTarget(target, input.connection);
-      const result = await this.probeAndUpsertConnection({
-        connection,
-        password: target.password,
-        label: input.label,
-        signal,
-      });
-      return { status: "saved", serverId: result.serverId };
-    } catch (error) {
-      if (signal?.aborted) {
-        // The failed probe can include a credential; do not attach it as a cause.
-        // oxlint-disable-next-line preserve-caught-error
-        throw new Error("Plugin has stopped");
-      }
-      const reason = getConnectionAuthFailureReason(error);
-      if (reason) return { status: "password_required", reason };
-      let message = error instanceof Error ? error.message : String(error);
-      if (target.password) {
-        for (const value of [
-          target.password,
-          encodeURIComponent(target.password),
-          new URLSearchParams({ password: target.password }).toString().slice(9),
-        ]) {
-          if (value) message = message.split(value).join("[redacted]");
-        }
-      }
-      // The original error can contain a credential; do not expose it as a cause.
-      // oxlint-disable-next-line preserve-caught-error
-      throw new Error(message);
-    }
-  }
-
   async upsertDirectConnection(input: {
     serverId: string;
     endpoint: string;
@@ -2096,7 +1993,6 @@ export class HostRuntimeStore {
     password?: string;
     label?: string;
     timeoutMs?: number;
-    signal?: AbortSignal;
   }): Promise<{ profile: HostProfile; serverId: string; hostname: string | null }> {
     if (input.connection.type === "relay") {
       throw new Error("Cannot probe a relay connection without a server id.");
@@ -2117,10 +2013,6 @@ export class HostRuntimeStore {
       connection: input.connection,
       ...(input.timeoutMs !== undefined ? { timeoutMs: input.timeoutMs } : {}),
     });
-    if (input.signal?.aborted) {
-      await client.close().catch(() => undefined);
-      throw new Error("Plugin has stopped");
-    }
     const profile = await this.upsertHostConnection({
       serverId,
       label: input.label ?? hostname ?? undefined,
@@ -2170,9 +2062,9 @@ export class HostRuntimeStore {
   // A pairing link (a URL, a QR code, or a pasted link) asks the user to
   // confirm when it adds a new host or changes a saved host's key, relay, or
   // TLS setting. The answer needs the saved hosts, so it waits for them to load.
-  private async confirmLink(offer: ConnectionOffer, signal?: AbortSignal): Promise<boolean> {
+  private async confirmLink(offer: ConnectionOffer): Promise<boolean> {
     await this.loadRegistry();
-    return this.hostConfirmations.confirmLink(offer, this.hosts, signal);
+    return this.hostConfirmations.confirmLink(offer, this.hosts);
   }
 
   getPendingHostConfirmation(): HostConfirmationRequest | null {
@@ -2252,8 +2144,6 @@ export class HostRuntimeStore {
   private async probeAndUpsertOffer(
     offer: ConnectionOffer,
     password: string | undefined,
-    label?: string,
-    signal?: AbortSignal,
   ): Promise<{ profile: HostProfile; serverId: string; hostname: string | null }> {
     const connection = relayConnectionFromOffer(offer);
     const probeHost: HostProfile = {
@@ -2269,12 +2159,7 @@ export class HostRuntimeStore {
     };
     const { client, hostname } = await this.deps.connectToDaemon({ host: probeHost, connection });
     await client.close().catch(() => undefined);
-    if (signal?.aborted) throw new Error("Plugin has stopped");
-    const profile = await this.upsertConnectionFromOffer(
-      offer,
-      label ?? hostname ?? undefined,
-      password,
-    );
+    const profile = await this.upsertConnectionFromOffer(offer, hostname ?? undefined, password);
     return { profile, serverId: offer.serverId, hostname };
   }
 
@@ -2336,10 +2221,7 @@ export class HostRuntimeStore {
     }));
   }
 
-  async setHostBadgeDisplay(
-    serverId: string,
-    badgeDisplay: HostBadgeDisplay | null,
-  ): Promise<void> {
+  async setHostBadgeDisplay(serverId: string, badgeDisplay: HostBadgeDisplay): Promise<void> {
     await this.updateHostAppearance(serverId, (host) => ({
       ...host,
       appearance: { ...host.appearance, badgeDisplay },
@@ -3152,7 +3034,7 @@ export interface HostMutations {
   beginLinkPairing: () => LinkPairing;
   renameHost: (serverId: string, label: string) => Promise<void>;
   setHostColor: (serverId: string, color: HostColor) => Promise<void>;
-  setHostBadgeDisplay: (serverId: string, badgeDisplay: HostBadgeDisplay | null) => Promise<void>;
+  setHostBadgeDisplay: (serverId: string, badgeDisplay: HostBadgeDisplay) => Promise<void>;
   removeHost: (serverId: string) => Promise<void>;
   removeConnection: (serverId: string, connectionId: string) => Promise<void>;
 }

packages/app/src/screens/new-workspace-screen.tsx

@@ -1,3 +1,4 @@
+import { useAddHost } from "@/hosts/add-host";
 import type {
   CreateAgentRequestOptions,
   CreateWorkspaceRequestOptions,
@@ -8,7 +9,6 @@ import { getHostRuntimeStore } from "@/runtime/host-runtime";
 import { useCallback, useEffect, useMemo, useReducer, useRef, useState } from "react";
 import type { ReactNode } from "react";
 import { useTranslation } from "react-i18next";
-import { router } from "expo-router";
 import { Text, View } from "react-native";
 import { StyleSheet } from "react-native-unistyles";
 import { createNameId } from "mnemonic-id";
@@ -62,7 +62,6 @@ import type { KeyboardActionId } from "@/keyboard/keyboard-action-dispatcher";
 import { useFormPreferences } from "@/hooks/use-form-preferences";
 import type { CreateAgentInitialValues } from "@/hooks/use-agent-form-state";
 import { toErrorMessage } from "@/utils/error-messages";
-import { buildSettingsAddHostRoute } from "@/utils/host-routes";
 import {
   getHostProjectId,
   getWorktreeSupportForHostProject,
@@ -1166,9 +1165,7 @@ export function NewWorkspaceScreen({
     openAddProjectPicker(selectedServerId);
   }, [openAddProjectPicker, selectedServerId]);
 
-  const handleAddHost = useCallback(() => {
-    router.push(buildSettingsAddHostRoute(Date.now()));
-  }, []);
+  const handleAddHost = useAddHost();
 
   const openPicker = useCallback(() => {
     setPickerOpen(true);

packages/app/src/screens/settings-screen.tsx

@@ -1,4 +1,5 @@
-import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+import { useAddHost } from "@/hosts/add-host";
+import { useCallback, useMemo, useRef, useState } from "react";
 import type { ComponentType, ReactNode } from "react";
 import {
   Alert,
@@ -74,10 +75,6 @@ import { WindowChromeRegion, WindowChromeSafeArea } from "@/utils/desktop-window
 import { confirmDialog } from "@/utils/confirm-dialog";
 import { BackHeader } from "@/components/headers/back-header";
 import { PageLayout } from "@/components/page-layout";
-import { AddHostMethodModal } from "@/components/add-host-method-modal";
-import { AddHostModal } from "@/components/add-host-modal";
-import { AddRemoteSshHostModal } from "@/components/add-remote-ssh-host-modal";
-import { PairLinkModal } from "@/components/pair-link-modal";
 import { KeyboardShortcutsSection } from "@/screens/settings/keyboard-shortcuts-section";
 import { EditorSection } from "@/screens/settings/editor-section";
 import { FilesSection } from "@/screens/settings/files-section";
@@ -1089,21 +1086,15 @@ function SettingsSidebar({
 
 export interface SettingsScreenProps {
   view: SettingsView;
-  openAddHostIntent?: string | null;
 }
 
-export default function SettingsScreen({ view, openAddHostIntent = null }: SettingsScreenProps) {
+export default function SettingsScreen({ view }: SettingsScreenProps) {
   const router = useRouter();
   const { t } = useTranslation();
   const voiceAudioEngine = useVoiceAudioEngineOptional();
   const { settings, isLoading: settingsLoading, updateSettings } = useAppSettings();
-  const [isAddHostMethodVisible, setIsAddHostMethodVisible] = useState(false);
-  const [isDirectHostVisible, setIsDirectHostVisible] = useState(false);
-  const [isRemoteSshVisible, setIsRemoteSshVisible] = useState(false);
-  const [isPasteLinkVisible, setIsPasteLinkVisible] = useState(false);
   const [isPlaybackTestRunning, setIsPlaybackTestRunning] = useState(false);
   const [playbackTestResult, setPlaybackTestResult] = useState<string | null>(null);
-  const lastOpenedAddHostIntentRef = useRef<string | null>(null);
   const isDesktopApp = isElectronRuntime();
   const appVersion = resolveAppVersion();
   const appVersionText = formatVersionWithPrefix(appVersion);
@@ -1164,50 +1155,10 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
     }
   }, [isPlaybackTestRunning, t, voiceAudioEngine]);
 
-  const closeAddConnectionFlow = useCallback(() => {
-    setIsAddHostMethodVisible(false);
-    setIsDirectHostVisible(false);
-    setIsRemoteSshVisible(false);
-    setIsPasteLinkVisible(false);
-  }, []);
-
-  const goBackToAddConnectionMethods = useCallback(() => {
-    setIsDirectHostVisible(false);
-    setIsRemoteSshVisible(false);
-    setIsPasteLinkVisible(false);
-    setIsAddHostMethodVisible(true);
-  }, []);
-
-  const handleAddHost = useCallback(() => {
-    setIsAddHostMethodVisible(true);
-  }, []);
-
-  useEffect(() => {
-    if (!openAddHostIntent || lastOpenedAddHostIntentRef.current === openAddHostIntent) {
-      return;
-    }
-    lastOpenedAddHostIntentRef.current = openAddHostIntent;
-    handleAddHost();
-  }, [handleAddHost, openAddHostIntent]);
-
-  const handleSelectDirectConnection = useCallback(() => {
-    setIsAddHostMethodVisible(false);
-    setIsDirectHostVisible(true);
-  }, []);
-
-  const handleSelectRemoteSsh = useCallback(() => {
-    setIsAddHostMethodVisible(false);
-    setIsRemoteSshVisible(true);
-  }, []);
-
-  const handleSelectPasteLink = useCallback(() => {
-    setIsAddHostMethodVisible(false);
-    setIsPasteLinkVisible(true);
-  }, []);
-
   const handleHostAdded = useCallback(
-    ({ serverId }: { serverId: string }) => {
-      const target = buildSettingsHostSectionRoute(serverId, "connections");
+    (serverId: string) => {
+      selectSettingsHost(serverId);
+      const target = buildSettingsHostSectionRoute(serverId, "host");
       if (isCompactLayout) {
         router.push(target);
       } else {
@@ -1217,6 +1168,8 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
     [isCompactLayout, router],
   );
 
+  const handleAddHost = useAddHost({ onAdded: handleHostAdded });
+
   const handleSelectSection = useCallback(
     (section: SettingsSectionSlug) => {
       const target = buildSettingsSectionRoute(section);
@@ -1272,14 +1225,6 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
     [activeHostServerId, handleAddHost, isCompactLayout, router],
   );
 
-  const handleScanQr = useCallback(() => {
-    closeAddConnectionFlow();
-    router.push({
-      pathname: "/pair-scan",
-      params: { source: "settings" },
-    });
-  }, [closeAddConnectionFlow, router]);
-
   const handleHostRemoved = useCallback(() => {
     const fallback = buildSettingsSectionRoute("general");
     if (isCompactLayout) {
@@ -1388,37 +1333,6 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
     );
   }
 
-  const addHostModals = (
-    <>
-      <AddHostMethodModal
-        visible={isAddHostMethodVisible}
-        onClose={closeAddConnectionFlow}
-        onDirectConnection={handleSelectDirectConnection}
-        onRemoteSsh={handleSelectRemoteSsh}
-        onPasteLink={handleSelectPasteLink}
-        onScanQr={handleScanQr}
-      />
-      <AddHostModal
-        visible={isDirectHostVisible}
-        onClose={closeAddConnectionFlow}
-        onCancel={goBackToAddConnectionMethods}
-        onSaved={handleHostAdded}
-      />
-      <AddRemoteSshHostModal
-        visible={isRemoteSshVisible}
-        onClose={closeAddConnectionFlow}
-        onCancel={goBackToAddConnectionMethods}
-        onSaved={handleHostAdded}
-      />
-      <PairLinkModal
-        visible={isPasteLinkVisible}
-        onClose={closeAddConnectionFlow}
-        onCancel={goBackToAddConnectionMethods}
-        onSaved={handleHostAdded}
-      />
-    </>
-  );
-
   // Mobile root: full-screen sidebar-as-list.
   if (isCompactLayout && view.kind === "root") {
     return (
@@ -1436,7 +1350,6 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
             layout="mobile"
           />
         </ScrollView>
-        {addHostModals}
       </View>
     );
   }
@@ -1447,7 +1360,6 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
         <PageLayout title={detailTitle} onBack={handleBackFromDetail}>
           {content}
         </PageLayout>
-        {addHostModals}
       </View>
     );
   }
@@ -1482,7 +1394,6 @@ export default function SettingsScreen({ view, openAddHostIntent = null }: Setti
           </View>
         </WindowChromeRegion>
       </View>
-      {addHostModals}
     </View>
   );
 }

packages/app/src/utils/host-routes.test.ts

@@ -8,7 +8,6 @@ import {
   buildOpenProjectRoute,
   resolveKnownHostRoute,
   buildSessionsRoute,
-  buildSettingsAddHostRoute,
   buildProjectSettingsRoute,
   buildProjectsSettingsRoute,
   decodeFilePathFromPathSegment,
@@ -185,14 +184,6 @@ describe("workspace route parsing", () => {
 });
 
 describe("projects settings routes", () => {
-  it("buildSettingsAddHostRoute opens settings with the add-host flag", () => {
-    expect(buildSettingsAddHostRoute()).toBe("/settings/general?addHost=1");
-  });
-
-  it("buildSettingsAddHostRoute accepts a repeatable intent id", () => {
-    expect(buildSettingsAddHostRoute("retry 1")).toBe("/settings/general?addHost=retry%201");
-  });
-
   it("buildProjectsSettingsRoute scopes the list to a host", () => {
     expect(buildProjectsSettingsRoute("host a")).toBe("/settings/hosts/host%20a/projects");
   });

packages/app/src/utils/host-routes.ts

@@ -553,10 +553,6 @@ export function buildSettingsSectionRoute(section: SettingsSectionSlug) {
   return `/settings/${section}` as const;
 }
 
-export function buildSettingsAddHostRoute(intentId: string | number = "1") {
-  return `/settings/general?addHost=${encodeURIComponent(String(intentId))}` as const;
-}
-
 export function buildSettingsHostRoute(serverId: string) {
   const normalized = trimNonEmpty(serverId);
   if (!normalized) {

packages/client/src/connection/index.ts

@@ -144,6 +144,7 @@ export const DEFAULT_CLIENT_CAPABILITIES = {
   [CLIENT_CAPS.pluginTimelineItems]: true,
   [CLIENT_CAPS.workspaceSetupBlocked]: true,
   [CLIENT_CAPS.workspaceSetupObservation]: true,
+  [CLIENT_CAPS.pluginBinaryPayloads]: true,
   [CLIENT_CAPS.explicitEventSubscriptions]: true,
 } satisfies Record<Exclude<ClientCapability, typeof CLIENT_CAPS.browserHost>, true>;
 

packages/client/src/connection/owned.test.ts

@@ -83,6 +83,26 @@ test("cancellation before the ID waits for bootstrap and releases exactly that I
   expect(c.released).toEqual(["cancelled"]);
 });
 
+test("a release right after the host accepts still reports the subscription as accepted", async () => {
+  const c = connection();
+  const handle = c.observe();
+  c.requests[0]!("closing");
+  const released = handle.release();
+  await expect(handle.ready).resolves.toMatchObject({ subscriptionId: "closing" });
+  await released;
+  expect(c.released).toEqual(["closing"]);
+});
+
+test("a release before the host accepts rejects ready", async () => {
+  const c = connection();
+  const handle = c.observe();
+  const released = handle.release();
+  await expect(handle.ready).rejects.toThrow("Subscription released");
+  c.requests[0]!("late");
+  await released;
+  expect(c.released).toEqual(["late"]);
+});
+
 test("surviving handles use new remote IDs after reconnect and released handles stay gone", async () => {
   const c = connection();
   const a = c.observe();

packages/client/src/connection/owned.ts

@@ -5,6 +5,8 @@ export type SubscriptionSnapshot<T> = T & { subscriptionId: string };
 export interface SubscriptionObserver<T> {
   snapshot(snapshot: T): void;
   update(message: SessionOutboundMessage): void;
+  /** A binary frame the host addressed to this subscription; the payload is a view. */
+  binary?(payload: Uint8Array): void;
   error?(error: unknown): void;
 }
 
@@ -20,9 +22,12 @@ interface Registration {
   start(): void;
   disconnected(): void;
   receive(message: SessionOutboundMessage): void;
+  receiveBinary(payload: Uint8Array): void;
   release(): Promise<void>;
 }
 
+type Update = { message: SessionOutboundMessage } | { binary: Uint8Array };
+
 export interface OwnedSubscriptionsHost {
   release(subscriptionId: string): Promise<void>;
   failed(error: unknown): void;
@@ -50,7 +55,7 @@ export class OwnedSubscriptions {
     let teardown: Promise<void> | null = null;
     let disposed = false;
     let overflow = false;
-    const buffered: SessionOutboundMessage[] = [];
+    const buffered: Update[] = [];
     const observers = new Set<SubscriptionObserver<SubscriptionSnapshot<T>>>();
     let resolve!: (snapshot: SubscriptionSnapshot<T>) => void;
     let reject!: (error: unknown) => void;
@@ -60,12 +65,10 @@ export class OwnedSubscriptions {
     });
     void ready.catch(() => {});
 
-    const deliver = (
-      observer: SubscriptionObserver<SubscriptionSnapshot<T>>,
-      message?: SessionOutboundMessage,
-    ) => {
+    const deliver = (observer: SubscriptionObserver<SubscriptionSnapshot<T>>, update?: Update) => {
       try {
-        if (message) observer.update(message);
+        if (update && "binary" in update) observer.binary?.(update.binary);
+        else if (update) observer.update(update.message);
         else if (snapshot) observer.snapshot(snapshot);
       } catch (error) {
         this.host.failed(error);
@@ -78,6 +81,13 @@ export class OwnedSubscriptions {
       this.routes.delete(released);
       await this.host.release(released);
     };
+    const buffer = (update: Update) => {
+      if (buffered.length < MAX_BOOTSTRAP_UPDATES && !overflow) buffered.push(update);
+      else {
+        buffered.length = 0;
+        overflow = true;
+      }
+    };
     const registration: Registration = {
       start: () => {
         if (disposed || pending || id || !this.connected) return;
@@ -128,12 +138,14 @@ export class OwnedSubscriptions {
       },
       receive: (message) => {
         if (disposed || ("payload" in message && Object.is(message.payload, snapshot))) return;
-        if (buffered.length < MAX_BOOTSTRAP_UPDATES && !overflow) buffered.push(message);
-        else {
-          buffered.length = 0;
-          overflow = true;
-        }
-        for (const observer of observers) deliver(observer, message);
+        buffer({ message });
+        for (const observer of observers) deliver(observer, { message });
+      },
+      receiveBinary: (payload) => {
+        if (disposed) return;
+        // Bytes wait only for the first observer; retaining them after would hold every frame.
+        if (observers.size === 0) buffer({ binary: payload });
+        for (const observer of observers) deliver(observer, { binary: payload });
       },
       release: () => {
         if (teardown) return teardown;
@@ -142,7 +154,9 @@ export class OwnedSubscriptions {
         observers.clear();
         buffered.length = 0;
         if (id) this.routes.delete(id);
-        reject(new Error("Subscription released"));
+        // A host that already accepted keeps `ready` resolved, even if released in the same tick.
+        if (snapshot) resolve(snapshot);
+        else reject(new Error("Subscription released"));
         teardown = (async () => {
           await pending;
           await releaseId();
@@ -174,7 +188,7 @@ export class OwnedSubscriptions {
             .catch(this.host.failed);
         } else {
           deliver(observer);
-          for (const message of buffered) deliver(observer, message);
+          for (const update of buffered) deliver(observer, update);
         }
         return () => {
           observers.delete(observer);
@@ -205,6 +219,10 @@ export class OwnedSubscriptions {
       this.routes.get(payload.subscriptionId)?.receive(message);
   }
 
+  receiveBinary(subscriptionId: string, payload: Uint8Array): void {
+    this.routes.get(subscriptionId)?.receiveBinary(payload);
+  }
+
   restore(): void {
     this.connected = true;
     for (const registration of this.registrations) registration.start();

packages/client/src/daemon-client.test.ts

@@ -1106,6 +1106,7 @@ test("advertises client capabilities in hello", async () => {
       terminal_chunked_replay: true,
       timeline_notifications: true,
       plugin_timeline_items: true,
+      plugin_binary_payloads: true,
       workspace_setup_blocked: true,
       workspace_setup_observation: true,
       hello_rejection: true,

packages/client/src/daemon-client.ts

@@ -164,6 +164,11 @@ import {
   FileTransferOpcode,
   TerminalStreamOpcode,
   type FileTransferFrame,
+  assertPluginWireValue,
+  decodePluginFrame,
+  encodePluginInputFrame,
+  isPluginFrameOpcode,
+  PluginFrameOpcode,
 } from "@getpaseo/protocol/binary-frames/index";
 import {
   createRelayE2eeTransportFactory,
@@ -2260,6 +2265,8 @@ export class DaemonClient {
     timeout?: number;
     select: (msg: SessionOutboundMessage) => T | null;
     options?: { skipQueue?: boolean };
+    /** Sends the request in another form, such as a binary frame; defaults to `message`. */
+    transmit?: () => Promise<void>;
   }): Promise<T> {
     const wire = this.owned.prepareRequest(params.message);
     const timeout = params.timeout ?? DEFAULT_SESSION_RPC_TIMEOUT_MS;
@@ -2290,7 +2297,9 @@ export class DaemonClient {
     // The response deadline still applies while the transport waits for drain.
     void promise.catch(() => undefined);
     try {
-      const sent = this.sendSessionMessageOrThrow(wire.message);
+      const sent = params.transmit
+        ? params.transmit()
+        : this.sendSessionMessageOrThrow(wire.message);
       const result = await Promise.race([promise, sent.then(() => promise)]);
       if (result.kind === "error") throw result.error;
       return result.value;
@@ -2313,12 +2322,14 @@ export class DaemonClient {
     responseType: TResponseType;
     options?: { skipQueue?: boolean };
     selectPayload?: (payload: CorrelatedResponsePayload<TResponseType>) => TResult | null;
+    transmit?: () => Promise<void>;
   }): Promise<TResult> {
     return this.sendRequest({
       requestId: params.requestId,
       message: params.message,
       timeout: params.timeout,
       options: params.options,
+      ...(params.transmit ? { transmit: params.transmit } : {}),
       select: (msg) => {
         const correlated = msg as CorrelatedResponseMessage;
         if (correlated.type !== params.responseType) {
@@ -2650,6 +2661,7 @@ export class DaemonClient {
         resetSource = false;
         if (query.type === "workspace.setup.subscribe.request")
           this.requireWorkspaceSetupObservation();
+        if (query.type === "plugin.rpc.subscribe.request") this.requirePluginSubscriptions();
         const requestId = this.createRequestId(options?.requestId);
         const request = SessionInboundMessageSchema.parse({ ...query, requestId });
         try {
@@ -6197,22 +6209,59 @@ export class DaemonClient {
     return payload.plugin;
   }
 
+  /**
+   * A `Uint8Array` input or output crosses the wire as a binary frame. Any other value is JSON and
+   * must not contain a `Uint8Array`.
+   */
   async invokePluginRpc(pluginId: string, method: string, input: unknown): Promise<unknown> {
+    assertPluginWireValue(input, "input");
     const requestId = this.createRequestId();
-    const payload = await this.sendCorrelatedSessionRequest({
-      requestId,
-      message: {
-        type: "plugin.rpc.invoke.request",
+    if (!(input instanceof Uint8Array)) {
+      const payload = await this.sendCorrelatedSessionRequest({
         requestId,
-        pluginId,
-        method,
-        input,
-      },
+        message: {
+          type: "plugin.rpc.invoke.request",
+          requestId,
+          pluginId,
+          method,
+          input,
+        },
+        responseType: "plugin.rpc.invoke.response",
+      });
+      return payload.output;
+    }
+    this.requirePluginSubscriptions();
+    const frame = encodePluginInputFrame({ requestId, pluginId, method, payload: input });
+    const payload = await this.sendCorrelatedRequest({
+      requestId,
+      message: { type: "plugin.rpc.invoke.request", requestId, pluginId, method, input: null },
       responseType: "plugin.rpc.invoke.response",
+      options: { skipQueue: true },
+      transmit: () => this.sendBinaryFrame(frame),
     });
     return payload.output;
   }
 
+  /** One subscription to a plugin subscription handler; events arrive as updates and binary. */
+  observePluginRpc(
+    pluginId: string,
+    method: string,
+    input: unknown,
+    options?: { signal?: AbortSignal },
+  ): OwnedSubscription<CorrelatedResponsePayload<"plugin.rpc.subscribe.response">> {
+    assertPluginWireValue(input, "input");
+    return this.observe(
+      "plugin.rpc.subscribe.response",
+      { type: "plugin.rpc.subscribe.request", pluginId, method, input },
+      options,
+    );
+  }
+
+  private requirePluginSubscriptions(): void {
+    if (this.lastServerInfoMessage?.features?.pluginSubscriptions !== true)
+      throw new Error("Update the host to use plugin subscriptions and binary plugin RPC");
+  }
+
   async respondToPermissionAndWait(
     agentId: string,
     requestId: string,
@@ -6975,6 +7024,23 @@ export class DaemonClient {
     }
   }
 
+  private handlePluginFrame(rawBytes: Uint8Array): void {
+    const frame = decodePluginFrame(rawBytes);
+    this.consecutiveLivenessFailures = 0;
+    this.runtimeMetrics?.recordBinaryFrame("plugin", rawBytes.byteLength, 0);
+    if (frame?.opcode === PluginFrameOpcode.Event) {
+      this.owned.receiveBinary(frame.subscriptionId, frame.payload);
+      return;
+    }
+    if (frame?.opcode === PluginFrameOpcode.Output) {
+      // The binary form of plugin.rpc.invoke.response.
+      this.resolveWaiters({
+        type: "plugin.rpc.invoke.response",
+        payload: { requestId: frame.requestId, output: frame.payload },
+      });
+    }
+  }
+
   private tryHandleBinaryFrame(rawBytes: Uint8Array): boolean {
     const hostFrame = decodeHostRouteFrame(rawBytes);
     if (rawBytes[0] === HOST_ROUTE_OPCODE && !hostFrame) {
@@ -6986,6 +7052,10 @@ export class DaemonClient {
       for (const handler of this.hostFrameListeners) handler(hostFrame);
       return true;
     }
+    if (isPluginFrameOpcode(rawBytes[0])) {
+      this.handlePluginFrame(rawBytes);
+      return true;
+    }
     const fileFrame = decodeFileTransferFrame(rawBytes);
     if (fileFrame) {
       this.traceInstant("paseo.ws.message.inbound", {

packages/desktop/e2e/browser-tabs.e2e.mjs

@@ -12,6 +12,7 @@ import { fileURLToPath } from "node:url";
 import { experimental_createMCPClient } from "ai";
 import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp.js";
 import { chromium } from "playwright";
+import { expect } from "@playwright/test";
 import { hideDeveloperToasts } from "../../app/e2e/support/developer-ui.mjs";
 import { runAppearanceFontSizeRegression } from "./appearance-font-size.electron.mjs";
 import { runAdaptiveThemeRegression } from "./appearance-theme.electron.mjs";
@@ -198,6 +199,20 @@ async function waitForDesktopStatus(page) {
   );
 }
 
+async function settleDesktopStartup(page) {
+  await expect(
+    page.getByRole("button", { name: "Desktop browser workspace 1", exact: true }),
+  ).toBeVisible({ timeout: timeoutMs });
+  // The dev launcher supplies its package directory as an open-project request.
+  // Before the local host connects, that request opens the connection prompt.
+  // Finish startup before exercising the unrelated Settings/browser workflows.
+  const connectionPrompt = page.getByTestId("add-host-method-modal");
+  if (await connectionPrompt.isVisible()) {
+    await connectionPrompt.getByRole("button", { name: "Close", exact: true }).click();
+    await expect(connectionPrompt).toBeHidden();
+  }
+}
+
 async function startTargetPage() {
   const server = createServer((_request, response) => {
     response.writeHead(200, { "content-type": "text/html; charset=utf-8" });
@@ -1208,6 +1223,7 @@ async function main() {
     const page = await waitForAppPage(browser, expoPort);
     await hideDeveloperToasts(page);
     const status = await waitForDesktopStatus(page);
+    await settleDesktopStartup(page);
 
     const checkPluginLinks = () =>
       runPluginLinksRegression({

packages/desktop/src/daemon/daemon-manager.test.ts

@@ -152,12 +152,6 @@ describe("daemon-manager commands", () => {
     expect(mocks.runExternalCliJsonCommand).not.toHaveBeenCalled();
   });
 
-  it("reads the desktop daemon identity after it has stopped", async () => {
-    mkdirSync(mocks.paseoHome);
-    writeFileSync(path.join(mocks.paseoHome, "server-id"), "srv_existing\n");
-    expect(await createDaemonCommandHandlers().desktop_daemon_identity()).toBe("srv_existing");
-  });
-
   it("reports an errored daemon when the local daemon state cannot be read", async () => {
     mkdirSync(mocks.paseoHome);
     writeFileSync(path.join(mocks.paseoHome, "paseo.pid"), "garbage");

packages/desktop/src/daemon/daemon-manager.ts

@@ -476,14 +476,6 @@ export function createDaemonCommandHandlers(): Record<string, DesktopCommandHand
       runningUnderARM64Translation: isRunningUnderARM64Translation(),
     }),
     desktop_daemon_status: () => resolveDesktopDaemonStatus(),
-    desktop_daemon_identity: () => {
-      try {
-        return readFileSync(path.join(getPaseoHome(), "server-id"), "utf8").trim() || null;
-      } catch (error) {
-        if ((error as NodeJS.ErrnoException).code === "ENOENT") return null;
-        throw error;
-      }
-    },
     desktop_local_credential: async (args) => {
       const instance = await readDaemonInstance(getPaseoHome());
       if (!instance?.desktopManaged || typeof args?.listen !== "string") return null;

packages/plugin/src/boundaries.test.ts

@@ -92,18 +92,6 @@ function typeErrors(code: string): string[] {
     .map((diagnostic) => ts.flattenDiagnosticMessageText(diagnostic.messageText, "\n"));
 }
 describe("plugin SDK import boundaries", () => {
-  it("exposes host handles and object-shaped additions from the client entry", () => {
-    expect(
-      typeErrors(`
-      import { addHost, observeHosts, useHosts, type PluginHost } from "@getpaseo/plugin/client";
-      const hosts: readonly PluginHost[] = useHosts();
-      const stop = observeHosts((value) => { void value[0]?.openSettings(); });
-      void addHost({ connection: "localhost:6767", label: "Local" });
-      void hosts; stop();
-    `),
-    ).toEqual([]);
-  });
-
   it("publishes process capabilities without their Windows implementation helpers", () => {
     expect(Object.keys(server).sort()).toEqual([
       "defineAgentTool",
@@ -335,3 +323,68 @@ describe("agent session reload SDK boundary", () => {
     ).toEqual([]);
   });
 });
+
+describe("plugin subscription SDK boundary", () => {
+  it("types contracts, overloaded handlers, the client hook, and the client entry handle", () => {
+    expect(
+      typeErrors(`
+      import { defineRpc, defineSubscription, type SubscriptionEvent, type SubscriptionInput } from "@getpaseo/plugin";
+      import type { PluginClientContext } from "@getpaseo/plugin/client";
+      import { useRpc, useSubscription } from "@getpaseo/plugin/client";
+      import type { PluginServerContext, PluginSubscriptionContext } from "@getpaseo/plugin/server";
+      import { z } from "zod";
+      const diffWatch = defineSubscription({
+        name: "diff.watch",
+        input: z.object({ a: z.string(), b: z.string() }),
+        event: z.object({ path: z.string(), status: z.enum(["added", "modified", "deleted"]) }),
+      });
+      const frames = defineSubscription({
+        name: "screen.capture",
+        input: z.object({ display: z.number() }),
+        event: z.union([z.instanceof(Uint8Array), z.object({ type: z.literal("resized"), width: z.number() })]),
+      });
+      const thumbnail = defineRpc({ name: "thumbnail.render", input: z.object({ path: z.string() }), output: z.instanceof(Uint8Array) });
+      const input: SubscriptionInput<typeof diffWatch> = { a: "main", b: "HEAD" };
+      const event: SubscriptionEvent<typeof diffWatch> = { path: "a.ts", status: "added" };
+      function server(server: PluginServerContext) {
+        server.handle(diffWatch, ({ a, b }, { push, signal, paseo }: PluginSubscriptionContext<SubscriptionEvent<typeof diffWatch>>) => {
+          const pushed: Promise<void> = push({ path: a + b, status: "modified" });
+          // @ts-expect-error events follow the contract
+          void push({ path: 1, status: "modified" });
+          signal.addEventListener("abort", () => undefined, { once: true });
+        });
+        server.handle(frames, async (_input, { push }) => {
+          await push(new Uint8Array(4));
+          await push({ type: "resized", width: 2 });
+        });
+        server.handle(thumbnail, ({ path }) => new Uint8Array(path.length));
+        // @ts-expect-error subscription handlers receive push, not an output
+        server.handle(diffWatch, () => ({ path: "a", status: "added" as const }) as unknown as number);
+      }
+      function Panel() {
+        const state = useSubscription(diffWatch, { a: "main", b: "HEAD" }, (change) => {
+          const status: "added" | "modified" | "deleted" = change.status;
+        });
+        if (state.status === "error") state.error.message;
+        // @ts-expect-error the hook has no ready state, only live
+        if (state.status === "ready") return null;
+        useSubscription(frames, { display: 1 }, (event) => {
+          if (event instanceof Uint8Array) event.byteLength;
+          else event.width;
+        });
+        const render = useRpc(thumbnail);
+        void render({ path: "x" }).then((png: Uint8Array) => png.byteLength);
+        return null;
+      }
+      function client(client: PluginClientContext) {
+        const controller = new AbortController();
+        const remover = client.subscribe(diffWatch, { a: "main", b: "HEAD" }, (change) => change.path, { signal: controller.signal });
+        const ready: Promise<void> = remover.ready;
+        const released: Promise<void> = remover.release();
+        remover();
+        return () => {};
+      }
+    `),
+    ).toEqual([]);
+  });
+});

packages/plugin/src/client/contracts.ts

@@ -4,7 +4,13 @@ import type { PaseoApi } from "@getpaseo/client";
 import type { AgentTimelineItem, JsonValue } from "@getpaseo/protocol/agent-types";
 import type { ZodType, input as ZodInput, output as ZodOutput } from "zod";
 import type { PluginFile } from "./file.js";
-import type { PluginRpcContract } from "../rpc.js";
+import type {
+  PluginRpcContract,
+  PluginSubscribeOptions,
+  PluginSubscriptionContract,
+  PluginSubscriptionHandle,
+  PluginWireInput,
+} from "../rpc.js";
 import type {
   PluginButtonRegistration,
   PluginHeaderButtonContribution,
@@ -203,6 +209,16 @@ export interface PluginClientContext extends PluginCommandCapabilities, PluginCl
     contribution: PluginTimelineRendererContribution<Schema>,
   ): PluginCleanup;
   openPanel(id: string, options: PluginClientOpenPanelOptions): void;
+  /**
+   * Subscribes to a plugin subscription on this client's host. Paseo re-subscribes after a
+   * reconnect and releases what is left when the plugin stops.
+   */
+  subscribe<InputSchema extends ZodType, EventSchema extends ZodType>(
+    contract: PluginSubscriptionContract<InputSchema, EventSchema>,
+    input: PluginWireInput<ZodInput<InputSchema>>,
+    onEvent: (event: ZodOutput<EventSchema>) => void,
+    options?: PluginSubscribeOptions,
+  ): PluginSubscriptionHandle;
 }
 
 export type PluginClientContribution = (client: PluginClientContext) => PluginCleanup;
@@ -295,7 +311,7 @@ export interface PluginCommandCapabilities {
   paseo: PaseoApi;
   rpc<InputSchema extends ZodType, OutputSchema extends ZodType>(
     contract: PluginRpcContract<InputSchema, OutputSchema>,
-    input: ZodInput<InputSchema>,
+    input: PluginWireInput<ZodInput<InputSchema>>,
   ): Promise<ZodOutput<OutputSchema>>;
   openScreen(input: PluginOpenScreenInput): void;
   /** @deprecated Use `openScreen`. */

packages/plugin/src/client/host.ts

@@ -8,7 +8,7 @@ export {
 import type { PluginAttachmentSourceContribution } from "../contracts.js";
 import { PluginRpcProvider } from "./rpc-context.js";
 import { PaseoApiProvider } from "./paseo-context.js";
-import { callPluginRpc } from "../rpc.js";
+import { callPluginRpc, subscribePluginRpc, type PluginSubscriptionObserver } from "../rpc.js";
 
 export async function searchPluginAttachments(
   source: PluginAttachmentSourceContribution<PluginText>,
@@ -19,7 +19,9 @@ export async function searchPluginAttachments(
   return PluginAttachmentSearchPayloadSchema.parseAsync(output);
 }
 
-export { callPluginRpc, PaseoApiProvider, PluginRpcProvider };
+export { callPluginRpc, subscribePluginRpc, PaseoApiProvider, PluginRpcProvider };
+export type { PluginSubscriptionObserver };
+export type { PluginSubscribe } from "./rpc-context.js";
 
 export {
   PluginTranslationRuntime,

packages/plugin/src/client/hosts.ts

@@ -1,98 +0,0 @@
-import type { PluginHostSummary } from "./index.js";
-
-export type PluginHostStatus = PluginHostSummary["status"];
-export type PluginHostColor =
-  | "none"
-  | "violet"
-  | "sky"
-  | "emerald"
-  | "orange"
-  | "pink"
-  | "indigo"
-  | "teal"
-  | "red"
-  | "amber"
-  | "blue";
-export type PluginHostBadgeDisplay = "name" | "icon" | "hidden";
-export interface PluginHostAppearance {
-  readonly color: PluginHostColor;
-  /** Null uses the automatic local or remote default. */
-  readonly badgeDisplay: PluginHostBadgeDisplay | null;
-}
-/** Saved connection settings without credentials. Routed connections have no URI. */
-export type PluginHostConnection =
-  | {
-      readonly id: string;
-      readonly type: "directTcp";
-      readonly uri: string;
-      readonly endpoint: string;
-      readonly useTls: boolean;
-    }
-  | {
-      readonly id: string;
-      readonly type: "directSocket";
-      readonly uri: string;
-      readonly path: string;
-    }
-  | {
-      readonly id: string;
-      readonly type: "directPipe";
-      readonly uri: string;
-      readonly path: string;
-    }
-  | {
-      readonly id: string;
-      readonly type: "remoteSsh";
-      readonly uri: string;
-      readonly host: string;
-      readonly sshPort?: number;
-      readonly daemonPort?: number;
-    }
-  | {
-      readonly id: string;
-      readonly type: "relay";
-      readonly uri: string;
-      readonly relayEndpoint: string;
-      readonly useTls: boolean;
-      readonly daemonPublicKeyB64: string;
-      readonly minimumSecurityMode?: "protected";
-    }
-  | {
-      readonly id: string;
-      readonly type: "routed";
-      readonly uri: null;
-      readonly originServerId: string;
-    };
-export interface PluginHostPatch {
-  label?: string;
-  appearance?: Partial<PluginHostAppearance>;
-}
-export interface PluginHost extends PluginHostSummary {
-  readonly appearance: PluginHostAppearance;
-  readonly connections: readonly PluginHostConnection[];
-  readonly activeConnectionId: string | null;
-  readonly error: string | null;
-  readonly authFailureReason: "password_required" | "incorrect_password" | null;
-  readonly lastOnlineAt: string | null;
-  readonly createdAt: string;
-  readonly updatedAt: string;
-  update(patch: PluginHostPatch): Promise<void>;
-  /** Removes the host; throws for the desktop daemon host. */
-  remove(): Promise<void>;
-  /** Removing the last connection removes the host. */
-  removeConnection(connectionId: string): Promise<void>;
-  openSettings(): void;
-}
-export interface PluginHostAddInput {
-  /** Shared host connection grammar; may contain a password for the probe. */
-  connection: string;
-  label?: string;
-}
-export type PluginHostAddResult =
-  | { status: "saved"; host: PluginHost }
-  | { status: "password_required"; reason: "password_required" | "incorrect_password" }
-  | { status: "cancelled" };
-export declare function useHosts(): readonly PluginHost[];
-export declare function observeHosts(listener: (hosts: readonly PluginHost[]) => void): () => void;
-
-export declare function addHost(input: PluginHostAddInput): Promise<PluginHostAddResult>;

packages/plugin/src/client/index.ts

@@ -71,7 +71,12 @@ export {
 } from "./file.js";
 export { usePaseo } from "./paseo-context.js";
 export { useAgent, useWorkspace } from "./client-state.js";
-export { useRpc } from "./rpc-context.js";
+export { useRpc, useSubscription, type PluginSubscriptionState } from "./rpc-context.js";
+export type {
+  PluginSubscribeOptions,
+  PluginSubscriptionClosed,
+  PluginSubscriptionHandle,
+} from "../rpc.js";
 import type { SettingsDefinition } from "../settings.js";
 import type { SettingsState } from "./contracts.js";
 import type { ZodType } from "zod";
@@ -86,20 +91,7 @@ export interface PluginHostSummary {
   readonly status: "idle" | "connecting" | "online" | "offline" | "error";
 }
 /** Live configured hosts. Supplied by the app's client bundle loader. */
-export declare const useHosts: typeof import("./hosts.js").useHosts;
-export declare const observeHosts: typeof import("./hosts.js").observeHosts;
-export declare const addHost: typeof import("./hosts.js").addHost;
-export type {
-  PluginHost,
-  PluginHostStatus,
-  PluginHostColor,
-  PluginHostBadgeDisplay,
-  PluginHostAppearance,
-  PluginHostConnection,
-  PluginHostPatch,
-  PluginHostAddInput,
-  PluginHostAddResult,
-} from "./hosts.js";
+export declare function useHosts(): readonly PluginHostSummary[];
 /** Borrow an online host's API under this installation's lifetime. */
 export declare function getPaseoClient(serverId: string): import("@getpaseo/client").PaseoApi;
 /** Open an absolute HTTP(S) URL using the client platform’s external opener. */

packages/plugin/src/client/rpc-context.tsx

@@ -1,9 +1,34 @@
-import { createContext, useCallback, useContext, useMemo, type ReactNode } from "react";
+import {
+  createContext,
+  useCallback,
+  useContext,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+  type ReactNode,
+} from "react";
 import type { ZodType, input as ZodInput, output as ZodOutput } from "zod";
-import { callPluginRpc, type PluginRpcContract } from "../rpc.js";
+import {
+  callPluginRpc,
+  subscribePluginRpc,
+  type PluginRpcContract,
+  type PluginSubscriptionContract,
+  type PluginSubscriptionHandle,
+  type PluginSubscriptionObserver,
+  type PluginWireInput,
+} from "../rpc.js";
+import { shallowEqual } from "./shallow.js";
+
+export type PluginSubscribe = (
+  method: string,
+  input: unknown,
+  observer: PluginSubscriptionObserver,
+) => PluginSubscriptionHandle;
 
 export interface PluginRpcContextValue {
   invoke(method: string, input: unknown): Promise<unknown>;
+  subscribe: PluginSubscribe;
 }
 
 const PluginRpcContext = createContext<PluginRpcContextValue | null>(null);
@@ -15,22 +40,100 @@ export function usePluginRpcContextValue(): PluginRpcContextValue | null {
 export function PluginRpcProvider({
   children,
   invoke,
+  subscribe,
 }: {
   children: ReactNode;
   invoke(method: string, input: unknown): Promise<unknown>;
+  subscribe: PluginSubscribe;
 }) {
-  const value = useMemo(() => ({ invoke }), [invoke]);
+  const value = useMemo(() => ({ invoke, subscribe }), [invoke, subscribe]);
   return <PluginRpcContext.Provider value={value}>{children}</PluginRpcContext.Provider>;
 }
 
 export function useRpc<InputSchema extends ZodType, OutputSchema extends ZodType>(
   contract: PluginRpcContract<InputSchema, OutputSchema>,
-): (input: ZodInput<InputSchema>) => Promise<ZodOutput<OutputSchema>> {
+): (input: PluginWireInput<ZodInput<InputSchema>>) => Promise<ZodOutput<OutputSchema>> {
   const context = usePluginRpcContextValue();
   if (!context) throw new Error("useRpc must run inside a contributed plugin surface");
 
   return useCallback(
-    (input: ZodInput<InputSchema>) => callPluginRpc(contract, context.invoke, input),
+    (input: PluginWireInput<ZodInput<InputSchema>>) =>
+      callPluginRpc(contract, context.invoke, input),
     [context, contract],
   );
 }
+
+export type PluginSubscriptionState =
+  | { status: "connecting" }
+  | { status: "live" }
+  /** The plugin's handler finished. The hook subscribes again when `input` changes. */
+  | { status: "closed" }
+  | { status: "error"; error: Error };
+
+/**
+ * Subscribes while the component is mounted. Re-subscribes when `input` changes by shallow
+ * comparison; `onEvent` always runs the latest callback.
+ */
+export function useSubscription<InputSchema extends ZodType, EventSchema extends ZodType>(
+  contract: PluginSubscriptionContract<InputSchema, EventSchema>,
+  input: PluginWireInput<ZodInput<InputSchema>>,
+  onEvent: (event: ZodOutput<EventSchema>) => void,
+): PluginSubscriptionState {
+  const context = usePluginRpcContextValue();
+  if (!context) throw new Error("useSubscription must run inside a contributed plugin surface");
+  const subscribe = context.subscribe;
+  const onEventRef = useRef(onEvent);
+  onEventRef.current = onEvent;
+  const stableInput = useShallowStable(input);
+  const [state, setState] = useState<PluginSubscriptionState>({ status: "connecting" });
+
+  useEffect(() => {
+    let active = true;
+    setState({ status: "connecting" });
+    let handle: PluginSubscriptionHandle;
+    try {
+      handle = subscribePluginRpc(
+        contract,
+        subscribe,
+        stableInput,
+        (event) => onEventRef.current(event),
+        {
+          onClosed: ({ error }) => {
+            if (active) setState(error ? { status: "error", error } : CLOSED);
+          },
+        },
+      );
+    } catch (error) {
+      setState({ status: "error", error: toError(error) });
+      return;
+    }
+    handle.ready.then(
+      () => {
+        if (active) setState((current) => (current.status === "connecting" ? LIVE : current));
+        return undefined;
+      },
+      (error: unknown) => {
+        if (active) setState({ status: "error", error: toError(error) });
+      },
+    );
+    return () => {
+      active = false;
+      handle();
+    };
+  }, [contract, subscribe, stableInput]);
+
+  return state;
+}
+
+const LIVE: PluginSubscriptionState = { status: "live" };
+const CLOSED: PluginSubscriptionState = { status: "closed" };
+
+function useShallowStable<Value>(value: Value): Value {
+  const ref = useRef(value);
+  if (!shallowEqual(ref.current, value)) ref.current = value;
+  return ref.current;
+}
+
+function toError(error: unknown): Error {
+  return error instanceof Error ? error : new Error(String(error));
+}

packages/plugin/src/client/runtime-context-bridge.tsx

@@ -26,7 +26,7 @@ export function usePluginRuntimeContextBridge(): PluginRuntimeContextBridge {
       );
       return (
         <PaseoApiProvider paseo={paseo}>
-          <PluginRpcProvider invoke={rpc.invoke}>
+          <PluginRpcProvider invoke={rpc.invoke} subscribe={rpc.subscribe}>
             <PluginTranslationProvider runtime={translations}>{content}</PluginTranslationProvider>
           </PluginRpcProvider>
         </PaseoApiProvider>

packages/plugin/src/index.ts

@@ -19,7 +19,16 @@ export {
   type PluginAttachmentItem,
   type PluginAttachmentSearchPayload,
 } from "./attachments.js";
-export { defineRpc, type PluginRpcContract, type RpcInput, type RpcOutput } from "./rpc.js";
+export {
+  defineRpc,
+  defineSubscription,
+  type PluginRpcContract,
+  type PluginSubscriptionContract,
+  type RpcInput,
+  type RpcOutput,
+  type SubscriptionEvent,
+  type SubscriptionInput,
+} from "./rpc.js";
 
 export type { PluginText, PluginMessage } from "./text.js";
 export {

packages/plugin/src/rpc.ts

@@ -9,6 +9,12 @@ export interface PluginRpcContract<
   output: OutputSchema;
 }
 
+/**
+ * `z.instanceof(Uint8Array)` infers `Uint8Array<ArrayBuffer>`; values crossing the wire accept any
+ * `Uint8Array`, including a `Buffer` or a view of a shared buffer.
+ */
+export type PluginWireInput<Value> = Value extends Uint8Array ? Uint8Array : Value;
+
 export type RpcInput<Contract extends PluginRpcContract> = ZodOutput<Contract["input"]>;
 export type RpcOutput<Contract extends PluginRpcContract> = ZodInput<Contract["output"]>;
 
@@ -31,9 +37,99 @@ export function defineRpc<InputSchema extends ZodType, OutputSchema extends ZodT
 export async function callPluginRpc<InputSchema extends ZodType, OutputSchema extends ZodType>(
   contract: PluginRpcContract<InputSchema, OutputSchema>,
   invoke: (method: string, input: unknown) => Promise<unknown>,
-  input: ZodInput<InputSchema>,
+  input: PluginWireInput<ZodInput<InputSchema>>,
 ): Promise<ZodOutput<OutputSchema>> {
   const parsedInput = await contract.input.parseAsync(input);
   const output = await invoke(contract.name, parsedInput);
   return contract.output.parseAsync(output);
 }
+
+export interface PluginSubscriptionContract<
+  InputSchema extends ZodType = ZodType,
+  EventSchema extends ZodType = ZodType,
+> {
+  name: string;
+  input: InputSchema;
+  event: EventSchema;
+}
+
+export type SubscriptionInput<Contract extends PluginSubscriptionContract> = ZodOutput<
+  Contract["input"]
+>;
+export type SubscriptionEvent<Contract extends PluginSubscriptionContract> = ZodOutput<
+  Contract["event"]
+>;
+
+interface SubscriptionDefinition<InputSchema extends ZodType, EventSchema extends ZodType> {
+  name: string;
+  input: InputSchema;
+  event: EventSchema;
+}
+
+export function defineSubscription<InputSchema extends ZodType, EventSchema extends ZodType>(
+  definition: SubscriptionDefinition<InputSchema, EventSchema>,
+): PluginSubscriptionContract<InputSchema, EventSchema> {
+  const name = definition.name.trim();
+  if (!RPC_NAME.test(name)) throw new Error(`Invalid plugin subscription: ${definition.name}`);
+  return { ...definition, name };
+}
+
+/** One subscription from a client surface. Calling it or `release()` ends it. */
+export type PluginSubscriptionHandle = (() => void) & {
+  /** Resolves once the plugin acknowledged the subscription; rejects if it refused. */
+  readonly ready: Promise<void>;
+  release(): Promise<void>;
+};
+
+export interface PluginSubscriptionObserver {
+  event(event: unknown): void;
+  closed(error?: Error): void;
+}
+
+export interface PluginSubscriptionClosed {
+  /** Set when the plugin's handler failed, the plugin stopped, or an event failed validation. */
+  error?: Error;
+}
+
+export interface PluginSubscribeOptions {
+  /** Aborting releases the subscription. */
+  signal?: AbortSignal;
+  /** Runs once when the daemon closes the subscription. Not called after a release. */
+  onClosed?: (closed: PluginSubscriptionClosed) => void;
+}
+
+export function subscribePluginRpc<InputSchema extends ZodType, EventSchema extends ZodType>(
+  contract: PluginSubscriptionContract<InputSchema, EventSchema>,
+  subscribe: (
+    method: string,
+    input: unknown,
+    observer: PluginSubscriptionObserver,
+  ) => PluginSubscriptionHandle,
+  input: PluginWireInput<ZodInput<InputSchema>>,
+  onEvent: (event: ZodOutput<EventSchema>) => void,
+  options: PluginSubscribeOptions = {},
+): PluginSubscriptionHandle {
+  // The plugin parses the input into the schema's output, so it receives the input as given.
+  contract.input.parse(input);
+  let closed = false;
+  function close(error?: Error) {
+    if (closed) return;
+    closed = true;
+    options.onClosed?.(error ? { error } : {});
+  }
+  const handle = subscribe(contract.name, input, {
+    event(event) {
+      if (closed) return;
+      const parsed = contract.event.safeParse(event);
+      if (parsed.success) return onEvent(parsed.data);
+      handle();
+      close(new Error(`Plugin subscription ${contract.name} sent an invalid event`));
+    },
+    closed: close,
+  });
+  if (options.signal) {
+    if (options.signal.aborted) handle();
+    else options.signal.addEventListener("abort", () => handle(), { once: true });
+  }
+  return handle;
+}

packages/plugin/src/server/contracts.ts

@@ -1,6 +1,6 @@
 import type { PaseoApi } from "@getpaseo/client";
 import type { ZodType, input as ZodInput, output as ZodOutput } from "zod";
-import type { PluginRpcContract } from "../rpc.js";
+import type { PluginRpcContract, PluginSubscriptionContract, PluginWireInput } from "../rpc.js";
 import type { PluginCleanup } from "../contracts.js";
 import type { ProviderRegistration } from "./provider.js";
 import type { UsageSourceRegistration } from "./usage.js";
@@ -10,6 +10,18 @@ export interface PluginHandlerContext {
   paseo: PaseoApi;
 }
 
+/** What a subscription handler receives beside its input. */
+export interface PluginSubscriptionContext<Event = unknown> extends PluginHandlerContext {
+  /**
+   * Sends one event to this subscriber. A `Uint8Array` event travels as a binary frame; any other
+   * event is JSON and must not contain a `Uint8Array`. Resolves once the event left the plugin
+   * process. Events pushed after `signal` aborts are dropped.
+   */
+  push(event: Event): Promise<void>;
+  /** Aborts when the subscriber releases, disconnects, or the plugin stops. */
+  signal: AbortSignal;
+}
+
 export type PluginSettingsState<Schema extends ZodType> =
   | {
       status: "ready";
@@ -31,12 +43,24 @@ export interface PluginServerContext extends PluginLifecycleRegistration {
   registerSettings<Schema extends ZodType>(
     definition: import("../settings.js").SettingsDefinition<Schema>,
   ): PluginSettings<Schema>;
+  /**
+   * Serves a subscription. The handler starts the work and returns; the subscription stays open
+   * until `signal` aborts. A handler that throws refuses the subscription. When it returns a
+   * promise, settling the promise closes the subscription, with the rejection as its error.
+   */
+  handle<InputSchema extends ZodType, EventSchema extends ZodType>(
+    contract: PluginSubscriptionContract<InputSchema, EventSchema>,
+    handler: (
+      input: ZodOutput<InputSchema>,
+      context: PluginSubscriptionContext<PluginWireInput<ZodInput<EventSchema>>>,
+    ) => void | Promise<void>,
+  ): void;
   handle<InputSchema extends ZodType, OutputSchema extends ZodType>(
     contract: PluginRpcContract<InputSchema, OutputSchema>,
     handler: (
       input: ZodOutput<InputSchema>,
       context: PluginHandlerContext,
-    ) => ZodInput<OutputSchema> | Promise<ZodInput<OutputSchema>>,
+    ) => PluginWireInput<ZodInput<OutputSchema>> | Promise<PluginWireInput<ZodInput<OutputSchema>>>,
   ): void;
   registerProvider(provider: ProviderRegistration): void;
   registerUsageSource(source: UsageSourceRegistration): void;

packages/plugin/src/server/index.ts

@@ -11,6 +11,7 @@ export type {
   PluginServerContribution,
   PluginSettings,
   PluginSettingsState,
+  PluginSubscriptionContext,
 } from "./contracts.js";
 export type {
   PluginHooks,

packages/protocol/src/binary-frames/demux.ts

@@ -4,6 +4,7 @@ import {
   FileTransferOpcode,
   type FileTransferFrame,
 } from "./file-transfer.js";
+import { decodePluginFrame, PluginFrameOpcode, type PluginFrame } from "./plugin.js";
 import {
   decodeTerminalStreamFrame,
   TerminalStreamOpcode,
@@ -13,7 +14,8 @@ import {
 export type BinaryFrame =
   | { kind: "host_route"; frame: HostRouteFrame }
   | { kind: "terminal"; frame: TerminalStreamFrame }
-  | { kind: "file_transfer"; frame: FileTransferFrame };
+  | { kind: "file_transfer"; frame: FileTransferFrame }
+  | { kind: "plugin"; frame: PluginFrame };
 
 export function decodeBinaryFrame(bytes: Uint8Array): BinaryFrame | null {
   switch (bytes[0]) {
@@ -38,6 +40,12 @@ export function decodeBinaryFrame(bytes: Uint8Array): BinaryFrame | null {
       const frame = decodeFileTransferFrame(bytes);
       return frame ? { kind: "file_transfer", frame } : null;
     }
+    case PluginFrameOpcode.Event:
+    case PluginFrameOpcode.Output:
+    case PluginFrameOpcode.Input: {
+      const frame = decodePluginFrame(bytes);
+      return frame ? { kind: "plugin", frame } : null;
+    }
     default:
       return null;
   }

packages/protocol/src/binary-frames/index.ts

@@ -2,3 +2,4 @@ export * from "./demux.js";
 export * from "./file-transfer.js";
 export * from "./terminal.js";
 export * from "./host-route.js";
+export * from "./plugin.js";

packages/protocol/src/binary-frames/plugin.test.ts

@@ -0,0 +1,95 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  assertPluginWireValue,
+  decodeBinaryFrame,
+  decodePluginFrame,
+  encodePluginEventFrame,
+  encodePluginInputFrame,
+  encodePluginOutputFrame,
+  FileTransferOpcode,
+  MAX_PLUGIN_PAYLOAD_BYTES,
+  MAX_ROUTED_PAYLOAD_BYTES,
+  PluginFrameOpcode,
+  TerminalStreamOpcode,
+} from "./index.js";
+
+describe("plugin binary frames", () => {
+  it("uses the reserved plugin opcode range", () => {
+    for (const opcode of Object.values(PluginFrameOpcode)) {
+      expect(opcode).toBeGreaterThanOrEqual(0x20);
+      expect(opcode).toBeLessThanOrEqual(0x2f);
+      expect(Object.values(TerminalStreamOpcode)).not.toContain(opcode);
+      expect(Object.values(FileTransferOpcode)).not.toContain(opcode);
+    }
+  });
+
+  it("frames a subscription event as opcode, id length, id, and the untouched payload", () => {
+    const payload = new Uint8Array([9, 8, 7]);
+    const frame = encodePluginEventFrame("sub-1", payload);
+    expect([...frame]).toEqual([0x20, 5, ...new TextEncoder().encode("sub-1"), 9, 8, 7]);
+    expect(decodeBinaryFrame(frame)).toEqual({
+      kind: "plugin",
+      frame: { opcode: PluginFrameOpcode.Event, subscriptionId: "sub-1", payload },
+    });
+  });
+
+  it("decodes payloads as views into the received buffer", () => {
+    const frame = encodePluginOutputFrame("req-1", new Uint8Array([1, 2, 3, 4]));
+    const decoded = decodePluginFrame(frame);
+    if (decoded?.opcode !== PluginFrameOpcode.Output) throw new Error("Expected an output frame");
+    expect(decoded.requestId).toBe("req-1");
+    expect(decoded.payload.buffer).toBe(frame.buffer);
+    expect([...decoded.payload]).toEqual([1, 2, 3, 4]);
+  });
+
+  it("frames an RPC input with the plugin and method in its header", () => {
+    const frame = encodePluginInputFrame({
+      requestId: "req-2",
+      pluginId: "uploads",
+      method: "upload.store",
+      payload: new Uint8Array([5, 6]),
+    });
+    expect(decodePluginFrame(frame)).toEqual({
+      opcode: PluginFrameOpcode.Input,
+      requestId: "req-2",
+      pluginId: "uploads",
+      method: "upload.store",
+      payload: new Uint8Array([5, 6]),
+    });
+  });
+
+  it("rejects truncated frames", () => {
+    expect(decodePluginFrame(new Uint8Array([0x20]))).toBeNull();
+    expect(decodePluginFrame(new Uint8Array([0x20, 9, 1]))).toBeNull();
+    expect(decodePluginFrame(new Uint8Array([0x22, 1, 65, 0, 40]))).toBeNull();
+  });
+});
+
+describe("the plugin byte rule", () => {
+  it("accepts JSON values and a top-level Uint8Array", () => {
+    expect(() => assertPluginWireValue({ a: [1, "b", null] }, "event")).not.toThrow();
+    expect(() => assertPluginWireValue(new Uint8Array(4), "event")).not.toThrow();
+  });
+
+  it("rejects bytes that would not fit in one frame with the largest header", () => {
+    const bytes = new Uint8Array(MAX_PLUGIN_PAYLOAD_BYTES + 1);
+    expect(() => assertPluginWireValue(bytes.subarray(1), "event")).not.toThrow();
+    expect(() => assertPluginWireValue(bytes, "event")).toThrow(
+      `event is ${MAX_PLUGIN_PAYLOAD_BYTES + 1} bytes; one value carries at most ${MAX_PLUGIN_PAYLOAD_BYTES} bytes`,
+    );
+    const frame = encodePluginInputFrame({
+      requestId: "r".repeat(255),
+      pluginId: "p",
+      method: "m".repeat(0xffff - 30),
+      payload: bytes.subarray(1),
+    });
+    expect(frame.byteLength).toBeLessThanOrEqual(MAX_ROUTED_PAYLOAD_BYTES);
+  });
+
+  it("rejects bytes nested in a value and names the rule and the path", () => {
+    expect(() => assertPluginWireValue({ frames: [{ data: new Uint8Array(1) }] }, "event")).toThrow(
+      "event.frames[0].data is a Uint8Array. Bytes cross the wire only as the whole value: send the Uint8Array itself, or encode it into the value.",
+    );
+  });
+});

packages/protocol/src/binary-frames/plugin.ts

@@ -0,0 +1,152 @@
+import { MAX_ROUTED_PAYLOAD_BYTES } from "./host-route.js";
+
+/**
+ * Plugin values that are a `Uint8Array` travel as binary frames. Opcodes 0x20-0x2f are
+ * reserved for plugin traffic. Every frame is `[opcode][id length u8][id]...` and the payload
+ * is the rest of the frame, decoded as a view so no hop copies it.
+ */
+export const PluginFrameOpcode = {
+  /** `[0x20][id length][subscriptionId][payload]`: a subscription event. */
+  Event: 0x20,
+  /** `[0x21][id length][requestId][payload]`: an RPC output; no JSON response follows. */
+  Output: 0x21,
+  /** `[0x22][id length][requestId][header length u16][header JSON][payload]`: an RPC input. */
+  Input: 0x22,
+} as const;
+
+export type PluginFrameOpcode = (typeof PluginFrameOpcode)[keyof typeof PluginFrameOpcode];
+
+/** The largest frame header: an input's opcode, ID and header JSON, each at its maximum length. */
+const MAX_PLUGIN_FRAME_HEADER_BYTES = 2 + 0xff + 2 + 0xffff;
+
+/** The largest `Uint8Array` a plugin value carries, so its frame fits in one routed message. */
+export const MAX_PLUGIN_PAYLOAD_BYTES = MAX_ROUTED_PAYLOAD_BYTES - MAX_PLUGIN_FRAME_HEADER_BYTES;
+
+export type PluginFrame =
+  | { opcode: typeof PluginFrameOpcode.Event; subscriptionId: string; payload: Uint8Array }
+  | { opcode: typeof PluginFrameOpcode.Output; requestId: string; payload: Uint8Array }
+  | {
+      opcode: typeof PluginFrameOpcode.Input;
+      requestId: string;
+      pluginId: string;
+      method: string;
+      payload: Uint8Array;
+    };
+
+export function isPluginFrameOpcode(value: number | undefined): value is PluginFrameOpcode {
+  return (
+    value === PluginFrameOpcode.Event ||
+    value === PluginFrameOpcode.Output ||
+    value === PluginFrameOpcode.Input
+  );
+}
+
+export function encodePluginEventFrame(subscriptionId: string, payload: Uint8Array): Uint8Array {
+  return encodeFrame(PluginFrameOpcode.Event, subscriptionId, new Uint8Array(0), payload);
+}
+
+export function encodePluginOutputFrame(requestId: string, payload: Uint8Array): Uint8Array {
+  return encodeFrame(PluginFrameOpcode.Output, requestId, new Uint8Array(0), payload);
+}
+
+export function encodePluginInputFrame(input: {
+  requestId: string;
+  pluginId: string;
+  method: string;
+  payload: Uint8Array;
+}): Uint8Array {
+  const header = new TextEncoder().encode(
+    JSON.stringify({ pluginId: input.pluginId, method: input.method }),
+  );
+  if (header.byteLength > 0xffff) throw new RangeError("Plugin input header is too long");
+  const prefix = new Uint8Array(2 + header.byteLength);
+  new DataView(prefix.buffer).setUint16(0, header.byteLength);
+  prefix.set(header, 2);
+  return encodeFrame(PluginFrameOpcode.Input, input.requestId, prefix, input.payload);
+}
+
+export function decodePluginFrame(bytes: Uint8Array): PluginFrame | null {
+  const opcode = bytes[0];
+  if (bytes.byteLength < 2 || !isPluginFrameOpcode(opcode)) return null;
+  const idLength = bytes[1];
+  if (idLength === 0 || idLength > bytes.byteLength - 2) return null;
+  const id = new TextDecoder().decode(bytes.subarray(2, 2 + idLength));
+  const body = bytes.subarray(2 + idLength);
+  if (opcode === PluginFrameOpcode.Event) return { opcode, subscriptionId: id, payload: body };
+  if (opcode === PluginFrameOpcode.Output) return { opcode, requestId: id, payload: body };
+  if (body.byteLength < 2) return null;
+  const headerLength = new DataView(body.buffer, body.byteOffset, body.byteLength).getUint16(0);
+  if (headerLength > body.byteLength - 2) return null;
+  const header = decodeInputHeader(body.subarray(2, 2 + headerLength));
+  if (!header) return null;
+  return { opcode, requestId: id, ...header, payload: body.subarray(2 + headerLength) };
+}
+
+function encodeFrame(
+  opcode: PluginFrameOpcode,
+  id: string,
+  prefix: Uint8Array,
+  payload: Uint8Array,
+): Uint8Array {
+  const idBytes = new TextEncoder().encode(id);
+  if (idBytes.byteLength === 0) throw new RangeError("Plugin frame ID is required");
+  if (idBytes.byteLength > 0xff) throw new RangeError("Plugin frame ID is too long");
+  const headerLength = 2 + idBytes.byteLength + prefix.byteLength;
+  const frame = new Uint8Array(headerLength + payload.byteLength);
+  frame[0] = opcode;
+  frame[1] = idBytes.byteLength;
+  frame.set(idBytes, 2);
+  frame.set(prefix, 2 + idBytes.byteLength);
+  frame.set(payload, headerLength);
+  return frame;
+}
+
+function decodeInputHeader(bytes: Uint8Array): { pluginId: string; method: string } | null {
+  try {
+    const header: unknown = JSON.parse(new TextDecoder().decode(bytes));
+    if (typeof header !== "object" || header === null) return null;
+    const pluginId = Reflect.get(header, "pluginId");
+    const method = Reflect.get(header, "method");
+    if (typeof pluginId !== "string" || typeof method !== "string" || !pluginId || !method)
+      return null;
+    return { pluginId, method };
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * The byte rule: a plugin value is either a `Uint8Array`, sent as a binary frame, or a JSON value
+ * with no `Uint8Array` inside it. Checks object structure only; never reads the bytes.
+ */
+export function assertPluginWireValue(value: unknown, label: string): void {
+  if (value instanceof Uint8Array) {
+    if (value.byteLength > MAX_PLUGIN_PAYLOAD_BYTES)
+      throw new RangeError(
+        `${label} is ${value.byteLength} bytes; one value carries at most ${MAX_PLUGIN_PAYLOAD_BYTES} bytes`,
+      );
+    return;
+  }
+  const nested = findNestedBytes(value, label);
+  if (nested)
+    throw new TypeError(
+      `${nested} is a Uint8Array. Bytes cross the wire only as the whole value: send the Uint8Array itself, or encode it into the value.`,
+    );
+}
+
+function findNestedBytes(value: unknown, path: string): string | null {
+  if (value instanceof Uint8Array) return path;
+  if (typeof value !== "object" || value === null) return null;
+  if (Array.isArray(value)) {
+    for (let index = 0; index < value.length; index += 1) {
+      const found = findNestedBytes(value[index], `${path}[${index}]`);
+      if (found) return found;
+    }
+    return null;
+  }
+  for (const [key, entry] of Object.entries(value)) {
+    const found = findNestedBytes(entry, `${path}.${key}`);
+    if (found) return found;
+  }
+  return null;
+}

packages/protocol/src/client-capabilities.ts

@@ -46,6 +46,9 @@ export const CLIENT_CAPS = {
   // COMPAT(pluginTimelineItems): added in v0.8.0, remove after 2027-03-07 once client floor >= v0.8.0.
   pluginTimelineItems: "plugin_timeline_items",
   workspaceSetupObservation: "workspace_setup_observation",
+  // COMPAT(pluginBinaryPayloads): added in v0.15.0, remove after 2027-05-02 once client floor >= v0.15.0.
+  // The daemon sends plugin RPC outputs as binary opcode 0x21 only to clients that decode it.
+  pluginBinaryPayloads: "plugin_binary_payloads",
   // COMPAT(workspaceSetupBlocked): added in v0.8.0, remove after 2027-03-07 once client floor >= v0.8.0.
   workspaceSetupBlocked: "workspace_setup_blocked",
   browserHost: "browser_host",

packages/protocol/src/host-target.test.ts

@@ -1,55 +1,5 @@
 import { expect, test } from "vitest";
 import { parseHostTarget } from "./host-target.js";
-import { serializeSshTransportUri } from "./ssh-transport.js";
-import { serializeSocketHostTarget } from "./host-target.js";
-import {
-  parseConnectionUri,
-  serializeConnectionUri,
-  serializeRelayConnectionUri,
-} from "./daemon-endpoints.js";
-
-test("SSH and local socket targets round trip through their serializers", () => {
-  const ssh = parseHostTarget("ssh://deploy@build-box:2222?daemonPort=7777");
-  if (ssh.kind !== "ssh") throw new Error("expected SSH");
-  expect(parseHostTarget(serializeSshTransportUri(ssh.ssh))).toEqual(ssh);
-  for (const [type, path] of [
-    ["unix", "/tmp/paseo.sock"],
-    ["pipe", "\\\\.\\pipe\\paseo"],
-  ] as const) {
-    const target = parseHostTarget(`${type}://${path}`);
-    expect(parseHostTarget(serializeSocketHostTarget(type, path))).toEqual(target);
-  }
-});
-
-test("TCP and relay targets round trip through credential-free serializers", () => {
-  const tcp = parseConnectionUri("tcp://example.com:6767?ssl=true&password=secret");
-  const tcpUri = serializeConnectionUri(tcp);
-  expect(tcpUri).not.toContain("secret");
-  expect(parseHostTarget(tcpUri)).toMatchObject({
-    connection: { type: "directTcp", endpoint: "example.com:6767", useTls: true },
-  });
-  const relay = parseHostTarget(
-    "relay://relay.example:443/server?key=public&ssl=true&password=secret",
-  );
-  if (relay.kind !== "socket" || relay.connection.type !== "relay")
-    throw new Error("expected relay");
-  const relayUri = serializeRelayConnectionUri({ offer: relay.connection.offer });
-  expect(relayUri).not.toContain("secret");
-  expect(parseHostTarget(relayUri)).toMatchObject({ connection: relay.connection });
-});
-
-test.each([
-  ["example.com:6767", { type: "directTcp", endpoint: "example.com:6767", useTls: false }],
-  [
-    "tcp://example.com:6767?ssl=true",
-    { type: "directTcp", endpoint: "example.com:6767", useTls: true },
-  ],
-  ["wss://example.com/ws", { type: "directTcp", endpoint: "example.com:443", useTls: true }],
-  ["unix:///tmp/paseo.sock", { type: "directSocket", path: "/tmp/paseo.sock" }],
-  ["pipe://mypipe", { type: "directPipe", path: "mypipe" }],
-])("%s exposes its structured connection", (input, connection) => {
-  expect(parseHostTarget(input)).toMatchObject({ kind: "socket", connection });
-});
 
 test.each([
   ["127.0.0.1:6767", "tcp://127.0.0.1:6767"],

packages/protocol/src/host-target.ts

@@ -14,23 +14,12 @@ export type HostTarget =
   | {
       kind: "socket";
       url: string;
-      connection:
-        | { type: "directTcp"; endpoint: string; useTls: boolean }
-        | { type: "directSocket"; path: string }
-        | { type: "directPipe"; path: string }
-        | { type: "relay"; offer: ConnectionOffer };
       socketPath?: string;
       password?: string;
       offer?: ConnectionOffer;
       description: string;
     };
 
-/** Serialize a local socket target in the shared host grammar. */
-export function serializeSocketHostTarget(type: "unix" | "pipe", path: string): string {
-  if (!path || path === "~") throw new Error("Invalid socket path");
-  return `${type}://${path}`;
-}
-
 /** The shared saved-host and CLI grammar. Errors never echo credential-bearing input. */
 export function parseHostTarget(input: string): HostTarget {
   try {
@@ -68,9 +57,6 @@ function parse(input: string): HostTarget {
     const pipe = input.startsWith("pipe://") || input.startsWith("\\\\.\\pipe\\");
     return {
       kind: "socket",
-      connection: pipe
-        ? { type: "directPipe", path: socketPath }
-        : { type: "directSocket", path: socketPath },
       socketPath,
       url: pipe ? "ws://localhost/ws" : `ws+unix://${socketPath}:/ws`,
       description: `${pipe ? "pipe" : "unix"}://${socketPath}`,
@@ -81,7 +67,6 @@ function parse(input: string): HostTarget {
   const endpoint = validatedEndpoint(/^\d+$/.test(input) ? `127.0.0.1:${input}` : input);
   return {
     kind: "socket",
-    connection: { type: "directTcp", endpoint, useTls: false },
     url: buildDaemonWebSocketUrl(endpoint, { useTls: false }),
     description: `tcp://${endpoint}`,
   };
@@ -90,7 +75,6 @@ function relayTarget(offer: ConnectionOffer, password?: string): HostTarget {
   const endpoint = validatedEndpoint(offer.relay.endpoint);
   return {
     kind: "socket",
-    connection: { type: "relay", offer },
     url: buildRelayWebSocketUrl({
       endpoint,
       serverId: offer.serverId,
@@ -113,7 +97,6 @@ function tcpTarget(input: string): HostTarget {
   );
   return {
     kind: "socket",
-    connection: { type: "directTcp", endpoint, useTls: parts.useTls },
     url: buildDaemonWebSocketUrl(endpoint, { useTls: parts.useTls }),
     password: parts.password,
     description: `tcp://${endpoint}`,
@@ -126,15 +109,7 @@ function websocketTarget(input: string): HostTarget {
   // Unknown query parameters may themselves contain credentials; discovery shows only the origin.
   if (url.pathname === "/") url.pathname = "/ws";
   url.searchParams.delete("password");
-  const useTls = url.protocol === "wss:";
-  const endpoint = `${url.hostname}:${url.port || (useTls ? "443" : "80")}`;
-  return {
-    kind: "socket",
-    connection: { type: "directTcp", endpoint, useTls },
-    url: url.toString(),
-    password,
-    description: url.origin,
-  };
+  return { kind: "socket", url: url.toString(), password, description: url.origin };
 }
 
 function sshTarget(input: string): HostTarget {

packages/protocol/src/messages.plugins.test.ts

@@ -372,3 +372,43 @@ it("npm metadata leaves legacy plugin rows parseable without extending their clo
     payload: { requestId: "npm", plugins: [plugin] },
   });
 });
+
+describe("plugin subscription protocol", () => {
+  it("parses a subscribe request and its response", () => {
+    const request = {
+      type: "plugin.rpc.subscribe.request",
+      requestId: "r1",
+      pluginId: "diff-watch",
+      method: "diff.watch",
+      input: { a: "main", b: "HEAD" },
+    };
+    expect(SessionInboundMessageSchema.parse(request)).toEqual(request);
+    const response = {
+      type: "plugin.rpc.subscribe.response",
+      payload: { requestId: "r1", subscriptionId: "s1" },
+    };
+    expect(SessionOutboundMessageSchema.parse(response)).toEqual(response);
+  });
+
+  it("parses JSON events and closes with and without an error", () => {
+    for (const message of [
+      { type: "plugin.rpc.event", payload: { subscriptionId: "s1", event: { path: "a.ts" } } },
+      { type: "plugin.rpc.closed", payload: { subscriptionId: "s1" } },
+      { type: "plugin.rpc.closed", payload: { subscriptionId: "s1", error: "boom" } },
+    ]) {
+      expect(SessionOutboundMessageSchema.parse(message)).toEqual(message);
+    }
+  });
+
+  it("advertises the feature as an optional flag", () => {
+    const status = {
+      type: "status",
+      payload: {
+        status: "server_info",
+        serverId: "srv",
+        features: { pluginSubscriptions: true },
+      },
+    };
+    expect(StatusMessageSchema.parse(status)).toMatchObject(status);
+  });
+});

packages/protocol/src/messages.ts

@@ -1606,6 +1606,14 @@ export const PluginRpcInvokeRequestSchema = z.object({
   input: z.unknown(),
 });
 
+export const PluginRpcSubscribeRequestSchema = z.object({
+  type: z.literal("plugin.rpc.subscribe.request"),
+  requestId: z.string(),
+  pluginId: PluginIdSchema,
+  method: z.string().min(1),
+  input: z.unknown(),
+});
+
 export const AgentTimelineAppendRequestSchema = z.object({
   type: z.literal("agent.timeline.append.request"),
   requestId: z.string(),
@@ -3339,6 +3347,7 @@ export const SessionInboundMessageSchema = z.discriminatedUnion("type", [
   PluginDisableRequestSchema,
   PluginRemoveRequestSchema,
   PluginRpcInvokeRequestSchema,
+  PluginRpcSubscribeRequestSchema,
   AgentTimelineAppendRequestSchema,
   AgentSkillsGetStatusRequestSchema,
   AgentSkillsReconcileRequestSchema,
@@ -3739,6 +3748,8 @@ export const ServerInfoStatusPayloadSchema = z
         pluginThemes: z.boolean().optional(),
         pluginSettings: z.boolean().optional(),
         pluginTimelineItems: z.boolean().optional(),
+        // COMPAT(pluginSubscriptions): added in v0.15.0, remove gate after 2027-05-02.
+        pluginSubscriptions: z.boolean().optional(),
         // COMPAT(skillManagement): added in v0.4.0, remove gate after 2027-08-16.
         skillManagement: z.boolean().optional(),
         // COMPAT(idleRuntimeCleanupSetting): added in v0.13.0, remove gate after 2027-04-26.
@@ -6962,6 +6973,22 @@ export const PluginRpcInvokeResponseSchema = z.object({
   }),
 });
 
+export const PluginRpcSubscribeResponseSchema = z.object({
+  type: z.literal("plugin.rpc.subscribe.response"),
+  payload: z.object({ requestId: z.string(), subscriptionId: z.string() }),
+});
+
+/** A JSON subscription event. A `Uint8Array` event rides as binary opcode 0x20 instead. */
+export const PluginRpcEventSchema = z.object({
+  type: z.literal("plugin.rpc.event"),
+  payload: z.object({ subscriptionId: z.string(), event: z.unknown() }),
+});
+
+export const PluginRpcClosedSchema = z.object({
+  type: z.literal("plugin.rpc.closed"),
+  payload: z.object({ subscriptionId: z.string(), error: z.string().optional() }),
+});
+
 export const AgentTimelineAppendResponseSchema = z.object({
   type: z.literal("agent.timeline.append.response"),
   payload: z.object({
@@ -7035,6 +7062,9 @@ export const SessionOutboundMessageSchema = z.discriminatedUnion("type", [
   PluginDisableResponseSchema,
   PluginRemoveResponseSchema,
   PluginRpcInvokeResponseSchema,
+  PluginRpcSubscribeResponseSchema,
+  PluginRpcEventSchema,
+  PluginRpcClosedSchema,
   AgentTimelineAppendResponseSchema,
   AgentSkillsGetStatusResponseSchema,
   AgentSkillsReconcileResponseSchema,

packages/protocol/src/ssh-transport.ts

@@ -60,19 +60,6 @@ export function parseSshTransportUri(value: string): SshTransportTarget {
   };
 }
 
-/** Serialize an SSH target without daemon credentials. */
-export function serializeSshTransportUri(target: SshTransportTarget): string {
-  const host = validateSshHost(target.host);
-  const separator = host.lastIndexOf("@");
-  const username = separator < 0 ? "" : `${encodeURIComponent(host.slice(0, separator))}@`;
-  const hostname = host.slice(separator + 1);
-  const authority = hostname.includes(":") ? `[${hostname}]` : hostname;
-  const port = target.sshPort === undefined ? "" : `:${validatePort(target.sshPort, "SSH port")}`;
-  const daemonPort = validatePort(target.daemonPort, "Daemon port");
-  const query = daemonPort === DEFAULT_SSH_DAEMON_PORT ? "" : `?daemonPort=${daemonPort}`;
-  return `ssh://${username}${authority}${port}${query}`;
-}
-
 export function buildSshTunnelArgs(target: SshTransportTarget): string[] {
   const host = validateSshHost(target.host);
   const daemonPort = validatePort(target.daemonPort, "Daemon port");

packages/relay/src/e2e.test.ts

@@ -56,6 +56,9 @@ function spawnRelayDevServer(port: number): ChildProcess {
       wranglerCliPath,
       "dev",
       "--local",
+      // Local execution still inherits production vars; exercise the local Durable Object.
+      "--var",
+      "PASEO_RELAY_UPSTREAM:",
       "--ip",
       "127.0.0.1",
       "--port",

packages/server/src/server/agent/providers/pi/agent.test.ts

@@ -1600,6 +1600,111 @@ describe("PiRpcAgentSession", () => {
     ]);
   });
 
+  test("closes a history-only Pi runtime after replaying its timeline", async () => {
+    const pi = new FakePi();
+    pi.queueSessionSetup((runtimeSession) => {
+      runtimeSession.messages = [
+        { role: "user", content: "Old question" },
+        { role: "assistant", content: [{ type: "text", text: "Old answer" }] },
+      ];
+    });
+
+    const client: import("../../agent-sdk-types.js").AgentClient = createClient(pi);
+    const session = await client.resumeSession(
+      {
+        provider: "pi",
+        sessionId: "pi-session-1",
+        nativeHandle: "/tmp/native-pi-session",
+        metadata: { cwd: tmpdir() },
+      },
+      {},
+      undefined,
+      { purpose: "history" },
+    );
+
+    onTestFinished(() => session.close());
+    const history: AgentStreamEvent[] = [];
+    for await (const event of session.streamHistory()) history.push(event);
+
+    expect(history).toEqual(
+      expect.arrayContaining([
+        expect.objectContaining({
+          type: "timeline",
+          provider: "pi",
+          item: expect.objectContaining({ type: "assistant_message", text: "Old answer" }),
+        }),
+      ]),
+    );
+    expect(pi.latestSession().closeCalls).toBe(1);
+
+    await session.close();
+    expect(pi.latestSession().closeCalls).toBe(1);
+  });
+
+  test("closes a history-only Pi runtime when replay is stopped", async () => {
+    const pi = new FakePi();
+    pi.queueSessionSetup((runtimeSession) => {
+      runtimeSession.messages = [
+        { role: "user", content: "Old question" },
+        { role: "assistant", content: [{ type: "text", text: "Old answer" }] },
+      ];
+    });
+    const session = await createClient(pi).resumeSession(
+      {
+        provider: "pi",
+        sessionId: "pi-session-1",
+        nativeHandle: "/tmp/native-pi-session",
+        metadata: { cwd: tmpdir() },
+      },
+      {},
+      undefined,
+      { purpose: "history" },
+    );
+    onTestFinished(() => session.close());
+    const history = session.streamHistory();
+    expect((await history.next()).done).toBe(false);
+    await history.return();
+    expect(pi.latestSession().closeCalls).toBe(1);
+  });
+
+  test("closes a history-only Pi runtime when replay fails", async () => {
+    const pi = new FakePi();
+    pi.queueSessionSetup((runtimeSession) => {
+      runtimeSession.getMessagesError = new Error("History unavailable");
+    });
+    const session = await createClient(pi).resumeSession(
+      {
+        provider: "pi",
+        sessionId: "pi-session-1",
+        nativeHandle: "/tmp/native-pi-session",
+        metadata: { cwd: tmpdir() },
+      },
+      {},
+      undefined,
+      { purpose: "history" },
+    );
+    onTestFinished(() => session.close());
+    const history = session.streamHistory();
+    await expect(history.next()).rejects.toThrow("History unavailable");
+    expect(pi.latestSession().closeCalls).toBe(1);
+  });
+
+  test("keeps an interactive Pi runtime open after replaying history", async () => {
+    const pi = new FakePi();
+    const session = await createClient(pi).resumeSession({
+      provider: "pi",
+      sessionId: "pi-session-1",
+      nativeHandle: "/tmp/native-pi-session",
+      metadata: { cwd: tmpdir() },
+    });
+    onTestFinished(() => session.close());
+    for await (const _event of session.streamHistory()) {
+      // Hydrate the session before its next interactive prompt.
+    }
+    expect(pi.latestSession().closeCalls).toBe(0);
+    await expect(session.getRuntimeInfo()).resolves.toMatchObject({ provider: "pi" });
+  });
+
   test("resumes a session whose model was removed on the model Pi falls back to", async () => {
     const pi = new FakePi();
     pi.removeModel("9router/deepseek-v4-flash");
@@ -3740,14 +3845,17 @@ readline.createInterface({ input: process.stdin }).on("line", (line) => {
     },
   );
 
-  test("a history resume of an agent whose folder is gone removes its session copy on close and leaves the original unchanged", async () => {
+  test("a history resume of an agent whose folder is gone removes its session copy after replay and leaves the original unchanged", async () => {
     const archived = writeArchivedSession(createDeletedFolder());
     const pi = new FakePi();
 
     const session = await resumeArchived(createClient(pi), archived, "history");
     const sessionCopy = pi.recordedLaunches[0]!.session!;
     expect(existsSync(sessionCopy)).toBe(true);
-    await session.close();
+    for await (const _event of session.streamHistory()) {
+      // Completion releases both the runtime and its temporary session copy.
+    }
+    expect(pi.latestSession().closeCalls).toBe(1);
 
     expect(existsSync(path.dirname(sessionCopy))).toBe(false);
     expect(readFileSync(archived.sessionFile)).toEqual(archived.originalBytes);

packages/server/src/server/agent/providers/pi/agent.ts

@@ -253,6 +253,7 @@ interface PiRpcAgentSessionOptions {
   currentModeId?: string | null;
   persistedSessionFile?: string;
   cleanup?: () => void;
+  closeAfterHistory?: boolean;
   extensionTimeoutMs?: number;
   logger: Logger;
   usagePollScheduler?: PiUsagePollScheduler;
@@ -1255,6 +1256,7 @@ export class PiRpcAgentSession implements AgentSession {
     this.currentModeId = options.currentModeId ?? null;
     this.persistedSessionFile = options.persistedSessionFile;
     this.cleanup = options.cleanup;
+    this.closeAfterHistory = options.closeAfterHistory ?? false;
     this.extensionTimeoutMs = options.extensionTimeoutMs ?? DEFAULT_PI_EXTENSION_RESULT_TIMEOUT_MS;
     this.logger = options.logger;
     this.extensionHost = createPiExtensionHost(this.logger);
@@ -1286,6 +1288,7 @@ export class PiRpcAgentSession implements AgentSession {
   private readonly config: AgentSessionConfig;
   private readonly persistedSessionFile?: string;
   private readonly cleanup?: () => void;
+  private readonly closeAfterHistory: boolean;
   private readonly extensionTimeoutMs: number;
 
   get id(): string | null {
@@ -1454,16 +1457,20 @@ export class PiRpcAgentSession implements AgentSession {
   }
 
   async *streamHistory(): AsyncGenerator<AgentStreamEvent> {
-    await this.requestEntryCapture("history");
-    yield* streamPiHistory(
-      this.provider,
-      await this.runtimeSession.getMessages(),
-      this.contextUserEntries,
-      {},
-      // At most eight 2 MiB child files per replay; later cards retain their summaries.
-      createPiExtensionHost(this.logger, undefined, 16 * 1024 * 1024),
-      this.closeController.signal,
-    );
+    try {
+      await this.requestEntryCapture("history");
+      yield* streamPiHistory(
+        this.provider,
+        await this.runtimeSession.getMessages(),
+        this.contextUserEntries,
+        {},
+        // At most eight 2 MiB child files per replay; later cards retain their summaries.
+        createPiExtensionHost(this.logger, undefined, 16 * 1024 * 1024),
+        this.closeController.signal,
+      );
+    } finally {
+      if (this.closeAfterHistory) await this.close();
+    }
   }
 
   async getRuntimeInfo(): Promise<AgentRuntimeInfo> {
@@ -2738,6 +2745,7 @@ export class PiRpcAgentClient implements AgentClient {
         capabilities: capabilitiesForSession(mcp !== null),
         persistedSessionFile: sessionCopy ? sessionFile : undefined,
         cleanup: cleanupTempFiles,
+        closeAfterHistory: options?.purpose === "history",
         extensionTimeoutMs: providerOptions.extensionTimeoutMs,
         logger: this.logger,
         usagePollScheduler: this.usagePollScheduler,