test(app): retain Android workspace memory diagnostic

Preserve the device assertion for a supplemental LOW_MEMORY exit seen with 800 projects. This does not establish the cause of the cold-start ANR reported in #4408 and changes no production behavior.

docs/development.md

@@ -311,6 +311,22 @@ frames non-stop, pinning ProMotion displays at 120Hz forever and draining the
 battery while the app is idle — so do not re-add it. The probe's visibility
 guards already prevent throttling from causing a false stall.
 
+### Desktop Linux hidden-window fallback
+
+On Wayland (seen on ChromeOS Linux) a window created with `show: false` can sit
+forever without a single compositor frame: the renderer loads and runs, but
+`ready-to-show` never fires, so the window is never shown and the app looks like
+it did not start while every process is alive. `showWindowWhenReady`
+(`packages/desktop/src/window/show-when-ready.ts`) shows the main window when
+the document finishes loading if the event has not arrived. The fallback is
+Linux-only; macOS and Windows keep waiting for `ready-to-show`.
+
+Run the startup regression on Linux with an isolated display:
+
+```bash
+xvfb-run -a npm run test:e2e:window-startup --workspace=@getpaseo/desktop
+```
+
 ### Daemon logs
 
 Check `$PASEO_HOME/daemon.log` for daemon logs. The default level is `info`; set

packages/app/e2e/browser/chat-outline.spec.ts

@@ -25,6 +25,12 @@ import {
   expectReadingStreamedMarkdown,
 } from "../support/helpers/chat-outline";
 import { createCreationScenario } from "../support/helpers/creation";
+import {
+  attachPromptTimelineEvidence,
+  expectPromptsDrawnByPlugin,
+  expectVirtualizedPluginPromptVisible,
+  withPromptTimelinePlugin,
+} from "../support/helpers/plugin-timeline";
 import {
   expectTimelineAtMaximumScrollWithPromptVisible,
   expectTimelinePromptNotMounted,
@@ -105,6 +111,60 @@ test.describe("desktop chat outline", () => {
     }
   });
 
+  test("jumps to prompts a timeline plugin draws", async ({ page }) => {
+    test.setTimeout(180_000);
+    const agent = await seedLongMockAgentTimeline({ turns: 80 });
+    try {
+      await withPromptTimelinePlugin(async () => {
+        await page.setViewportSize(WIDE_VIEWPORT);
+        await openAgentTimeline(page, agent);
+        await expectChatOutlinePrompts(page, 80);
+        await expectPromptsDrawnByPlugin(page);
+        await expectTimelinePromptNotMounted(page, agent.prompts[39]);
+
+        // Unloaded, then loaded, then near the newest edge.
+        await clickChatOutlineRowEdge(page, 40);
+        await expectTimelinePromptLandedBelowTop(page, agent.prompts[39]);
+        await attachPromptTimelineEvidence(page, test.info());
+        await clickChatOutlineRowEdge(page, 45);
+        await expectTimelinePromptLandedBelowTop(page, agent.prompts[44]);
+        await clickChatOutlineRowEdge(page, 78);
+        await expectTimelineAtMaximumScrollWithPromptVisible(page, agent.prompts[77]);
+        await expectPromptsDrawnByPlugin(page);
+      });
+    } finally {
+      await agent.cleanup();
+    }
+  });
+
+  test("jumps to a loaded virtualized prompt a timeline plugin draws without fetching", async ({
+    page,
+  }) => {
+    test.setTimeout(180_000);
+    const agent = await seedLongMockAgentTimeline({ turns: 80 });
+    const prompt = agent.prompts[29]!;
+    try {
+      await withPromptTimelinePlugin(async () => {
+        const history = await holdOlderHistoryPages(page, agent);
+        await page.setViewportSize(WIDE_VIEWPORT);
+        await openAgentTimeline(page, agent);
+        await expectChatOutlinePrompts(page, 80);
+        await scrollThroughOlderHistoryPages(page, 2, history);
+        await scrollTimelineToNewestLoadedEdge(page);
+        await expectTimelinePromptNotMounted(page, prompt);
+        const requestsBeforeJump = history.requestCount();
+
+        await clickChatOutlineRowEdge(page, 30);
+        await expectTimelinePromptLandedBelowTop(page, prompt);
+        await expectVirtualizedPluginPromptVisible(page, prompt);
+        await attachPromptTimelineEvidence(page, test.info());
+        expect(history.requestCount()).toBe(requestsBeforeJump);
+      }, [prompt]);
+    } finally {
+      await agent.cleanup();
+    }
+  });
+
   test.describe("with the whole conversation loaded", () => {
     let agent: LongTimelineAgent;
 

packages/app/e2e/browser/composer-email-mentions.spec.ts

@@ -4,6 +4,10 @@ import {
   expectComposerDraft,
   expectComposerVisible,
   fillComposerDraft,
+  enterComposerFullscreen,
+  exitComposerFullscreen,
+  resizeComposerViewport,
+  selectComposerDraftRange,
 } from "../support/helpers/composer";
 import { openAgentRoute, seedMockAgentWorkspace } from "../support/helpers/mock-agent";
 
@@ -53,3 +57,48 @@ for (const email of [
     }
   });
 }
+
+test("fullscreen mention keys edit the draft while inline keys still complete files", async ({
+  page,
+}) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "composer-fullscreen-mention-",
+    title: "Fullscreen mention keys",
+  });
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    const draft = "First line\nSecond line\n@README";
+    await fillComposerDraft(page, draft);
+    await expect(fileSuggestions(page).getByText("README.md", { exact: true })).toBeVisible();
+    await enterComposerFullscreen(page);
+    await expect(fileSuggestions(page)).not.toBeVisible();
+    await selectComposerDraftRange(page, draft.length, draft.length);
+    await composerLocator(page).press("ArrowUp");
+    await expect
+      .poll(() =>
+        composerLocator(page).evaluate((element) => {
+          const input = element as HTMLTextAreaElement;
+          return input.selectionStart === input.selectionEnd && input.selectionStart < 23;
+        }),
+      )
+      .toBe(true);
+    await selectComposerDraftRange(page, draft.length, draft.length);
+    await composerLocator(page).press("Enter");
+    await expectComposerDraft(page, `${draft}\n`);
+    await exitComposerFullscreen(page);
+    await selectReadmeMention(page);
+    const commandDraft = "/cl\nSecond line\nThird line";
+    await fillComposerDraft(page, commandDraft);
+    await selectComposerDraftRange(page, 2, 2);
+    await composerLocator(page).press("ArrowRight");
+    await expect(fileSuggestions(page).getByText("/clear", { exact: true }).first()).toBeVisible();
+    await enterComposerFullscreen(page);
+    await expect(fileSuggestions(page)).not.toBeVisible();
+    await composerLocator(page).press("Enter");
+    await expectComposerDraft(page, "/cl\n\nSecond line\nThird line");
+  } finally {
+    await agent.cleanup();
+  }
+});

packages/app/e2e/browser/composer-whitespace.spec.ts

@@ -1,3 +1,5 @@
+import { createMockIdleAgent, openWorkspaceWithAgents } from "../support/helpers/archive-tab";
+import { seedWorkspace } from "../support/helpers/seed-client";
 import { expect, test, type Page } from "../support/fixtures";
 import {
   expectNearBottom,
@@ -5,7 +7,27 @@ import {
   waitForScrollableChat,
 } from "../support/helpers/agent-bottom-anchor";
 import { awaitAssistantMessage } from "../support/helpers/agent-stream";
-import { composerLocator, expectComposerVisible } from "../support/helpers/composer";
+import {
+  attachComposerTestImage,
+  pasteComposerTestImage,
+  enterComposerFullscreen,
+  exitComposerFullscreen,
+  resizeComposerViewport,
+  selectComposerDraftRange,
+  expectComposerDraftSelection,
+  expectComposerFullscreenControls,
+  sendComposerWithButton,
+  queueComposerWithButton,
+  configureComposerQueueSend,
+  activateRetainedComposerTab,
+  recordVisibleComposerGeometry,
+  expectNoCollapsedVisibleComposer,
+  expectAttachmentPill,
+  expectQueuedMessageButton,
+  startRunningMockAgent,
+  composerLocator,
+  expectComposerVisible,
+} from "../support/helpers/composer";
 import { openAgentRoute, seedMockAgentWorkspace } from "../support/helpers/mock-agent";
 
 async function composerHeight(page: Page): Promise<number> {
@@ -133,3 +155,300 @@ test("composer growth keeps a bottom-pinned chat at the bottom", async ({ page }
     await agent.cleanup();
   }
 });
+
+async function writeCompactDraft(page: Page, text: string): Promise<void> {
+  await composerLocator(page).fill(text);
+  await expect(composerLocator(page)).toHaveValue(text);
+}
+
+test("compact long drafts stop growing before the header", async ({ page }) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "composer-cap-",
+    title: "Composer cap",
+  });
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    await writeCompactDraft(page, "A long draft line\n".repeat(40));
+    await expect.poll(() => composerHeight(page)).toBeLessThanOrEqual(160);
+  } finally {
+    await agent.cleanup();
+  }
+});
+
+test("compact fullscreen editing preserves the live draft and selection and stays open after send", async ({
+  page,
+}) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "composer-fullscreen-",
+    title: "Fullscreen composer",
+  });
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    await attachComposerTestImage(page);
+    await expectAttachmentPill(page, "composer-image-attachment-pill");
+    await writeCompactDraft(page, "First line\nSecond line");
+    await expect(page.getByRole("button", { name: "Fullscreen", exact: true })).toHaveCount(0);
+    await writeCompactDraft(page, "First line\nSecond line\nThird line");
+    await expect(page.getByRole("button", { name: "Fullscreen", exact: true })).toBeVisible();
+    await writeCompactDraft(
+      page,
+      "A sentence with enough words to wrap across several rendered lines in a narrow input. ".repeat(
+        4,
+      ),
+    );
+    await expect(page.getByRole("button", { name: "Fullscreen", exact: true })).toBeVisible();
+    await selectComposerDraftRange(page, 4, 17);
+    await enterComposerFullscreen(page);
+    await expectComposerFullscreenControls(page);
+    await expectComposerDraftSelection(page, 4, 17);
+    await expect(page.getByTestId("composer-image-attachment-pill")).toHaveCount(0);
+    await writeCompactDraft(page, "Edited fullscreen draft\nSecond line\nThird line");
+    await selectComposerDraftRange(page, 3, 12);
+    await exitComposerFullscreen(page);
+    await expect(composerLocator(page)).toHaveValue(
+      "Edited fullscreen draft\nSecond line\nThird line",
+    );
+    await expectComposerDraftSelection(page, 3, 12);
+    await expectAttachmentPill(page, "composer-image-attachment-pill");
+    await expect(composerLocator(page)).toBeFocused();
+    await enterComposerFullscreen(page);
+    await writeCompactDraft(page, "Short draft");
+    await expectComposerFullscreenControls(page);
+    await selectComposerDraftRange(page, 0, 5);
+    await resizeComposerViewport(page, "landscape");
+    await expectComposerFullscreenControls(page);
+    await expectComposerDraftSelection(page, 0, 5);
+    await expect(composerLocator(page)).toHaveValue("Short draft");
+    await expect(composerLocator(page)).toBeFocused();
+    await resizeComposerViewport(page, "portrait");
+    await sendComposerWithButton(page);
+    await expect(composerLocator(page)).toHaveValue("");
+    await expectComposerFullscreenControls(page);
+    await expect(page.getByRole("button", { name: "Send message", exact: true })).toBeDisabled();
+  } finally {
+    await agent.cleanup();
+  }
+});
+
+test("fullscreen submit rejection retains the editable draft and supports retry", async ({
+  page,
+}) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "composer-fullscreen-retry-",
+    title: "Fullscreen retry",
+    featureValues: { mockPromptRejections: 1 },
+  });
+  const draft = "First line\nSecond line\nThird line";
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    await writeCompactDraft(page, draft);
+    await enterComposerFullscreen(page);
+    await sendComposerWithButton(page);
+    await expect(page.getByTestId("composer-fullscreen").getByRole("alert")).toHaveText(
+      "Requested mock prompt rejection",
+    );
+    await expect(composerLocator(page)).toHaveValue(draft);
+    await expect(composerLocator(page)).toBeEditable();
+    await expect(page.getByRole("button", { name: "Send message", exact: true })).toBeEnabled();
+    await sendComposerWithButton(page);
+    await expect(composerLocator(page)).toHaveValue("");
+    await expectComposerFullscreenControls(page);
+  } finally {
+    await agent.cleanup();
+  }
+});
+
+test("fullscreen Send keeps the configured queue behavior while an agent runs", async ({
+  page,
+}) => {
+  await configureComposerQueueSend(page);
+  await resizeComposerViewport(page, "portrait");
+  const agent = await startRunningMockAgent(page, {
+    prefix: "composer-fullscreen-queue-",
+    model: "one-minute-stream",
+    prompt: "Stay running for fullscreen queue test.",
+  });
+  try {
+    await writeCompactDraft(page, "Queued first line\nSecond line\nThird line");
+    await enterComposerFullscreen(page);
+    await expectComposerFullscreenControls(page);
+    await queueComposerWithButton(page);
+    await expect(composerLocator(page)).toHaveValue("");
+    await expectComposerFullscreenControls(page);
+    await exitComposerFullscreen(page);
+    await expectQueuedMessageButton(page);
+  } finally {
+    await agent.cleanup();
+  }
+});
+
+test("image paste stays attached to the active editor across fullscreen entry and exit", async ({
+  page,
+}) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "composer-paste-remount-",
+    title: "Composer paste",
+  });
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    await writeCompactDraft(page, "First line\nSecond line\nThird line");
+    expect(await pasteComposerTestImage(page)).toBe(true);
+    await expect(page.getByTestId("composer-image-attachment-pill")).toHaveCount(1);
+    await enterComposerFullscreen(page);
+    expect(await pasteComposerTestImage(page)).toBe(true);
+    await exitComposerFullscreen(page);
+    await expect(page.getByTestId("composer-image-attachment-pill")).toHaveCount(2);
+    expect(await pasteComposerTestImage(page)).toBe(true);
+    await expect(page.getByTestId("composer-image-attachment-pill")).toHaveCount(3);
+  } finally {
+    await agent.cleanup();
+  }
+});
+
+test("retained agent tabs preserve fullscreen editing and paste when switched away and back", async ({
+  page,
+}) => {
+  const workspace = await seedWorkspace({ repoPrefix: "composer-retained-fullscreen-" });
+  try {
+    const first = await createMockIdleAgent(workspace.client, {
+      cwd: workspace.repoPath,
+      workspaceId: workspace.workspaceId,
+      title: "First retained chat",
+    });
+    const second = await createMockIdleAgent(workspace.client, {
+      cwd: workspace.repoPath,
+      workspaceId: workspace.workspaceId,
+      title: "Second retained chat",
+    });
+    await openWorkspaceWithAgents(page, [first, second]);
+    await resizeComposerViewport(page, "portrait");
+    const draft = "Live first line\nLive second line\nLive third line";
+    await writeCompactDraft(page, draft);
+    await enterComposerFullscreen(page);
+    await selectComposerDraftRange(page, 4, 17);
+    await activateRetainedComposerTab(page, first.title);
+    await expect(page.getByRole("button", { name: "Exit fullscreen", exact: true })).toHaveCount(0);
+    await writeCompactDraft(page, "Other tab draft");
+    await shrinkVisibleViewport(page);
+    await activateRetainedComposerTab(page, second.title);
+    await expectComposerFullscreenControls(page);
+    await expect(composerLocator(page)).toHaveValue(draft);
+    await expectFullscreenInsideVisibleViewport(page);
+    await expectComposerDraftSelection(page, 4, 17);
+    await expect(composerLocator(page)).toBeFocused();
+    expect(await pasteComposerTestImage(page)).toBe(true);
+    await exitComposerFullscreen(page);
+    await expectAttachmentPill(page, "composer-image-attachment-pill");
+  } finally {
+    await workspace.cleanup();
+  }
+});
+
+test("retained inline composers keep usable capacity through hidden tab geometry", async ({
+  page,
+}) => {
+  const workspace = await seedWorkspace({ repoPrefix: "composer-retained-capacity-" });
+  try {
+    const first = await createMockIdleAgent(workspace.client, {
+      cwd: workspace.repoPath,
+      workspaceId: workspace.workspaceId,
+      title: "First capacity chat",
+    });
+    const second = await createMockIdleAgent(workspace.client, {
+      cwd: workspace.repoPath,
+      workspaceId: workspace.workspaceId,
+      title: "Second capacity chat",
+    });
+    await openWorkspaceWithAgents(page, [first, second]);
+    await resizeComposerViewport(page, "portrait");
+    const draft = "Retained long line\n".repeat(40);
+    await writeCompactDraft(page, draft);
+    await recordVisibleComposerGeometry(page);
+    await activateRetainedComposerTab(page, first.title);
+    await writeCompactDraft(page, "Other visible draft");
+    await activateRetainedComposerTab(page, second.title);
+    await expect(composerLocator(page)).toHaveValue(draft);
+    await expect.poll(() => composerHeight(page)).toBeLessThanOrEqual(160);
+    await expect(page.getByRole("button", { name: "Send message", exact: true })).toBeVisible();
+    await expectNoCollapsedVisibleComposer(page);
+  } finally {
+    await workspace.cleanup();
+  }
+});
+
+async function shrinkVisibleViewport(page: Page): Promise<void> {
+  const cdp = await page.context().newCDPSession(page);
+  await cdp.send("Emulation.setPageScaleFactor", { pageScaleFactor: 2 });
+  await expect.poll(() => page.evaluate(() => window.visualViewport!.height)).toBe(422);
+  await cdp.detach();
+}
+
+async function panVisibleViewport(page: Page): Promise<void> {
+  const cdp = await page.context().newCDPSession(page);
+  await cdp.send("Input.dispatchTouchEvent", {
+    type: "touchStart",
+    touchPoints: [{ x: 4, y: 300 }],
+  });
+  for (let y = 290; y >= 100; y -= 10) {
+    await cdp.send("Input.dispatchTouchEvent", {
+      type: "touchMove",
+      touchPoints: [{ x: 4, y }],
+    });
+  }
+  await cdp.send("Input.dispatchTouchEvent", { type: "touchEnd", touchPoints: [] });
+  await expect.poll(() => page.evaluate(() => window.visualViewport!.offsetTop)).toBeGreaterThan(0);
+  await cdp.detach();
+}
+
+async function expectFullscreenInsideVisibleViewport(page: Page): Promise<void> {
+  await expect
+    .poll(() =>
+      page.getByTestId("composer-fullscreen").evaluate((element) => {
+        const viewport = window.visualViewport!;
+        const frame = element.getBoundingClientRect();
+        const send = element.querySelector('[aria-label="Send message"]')!.getBoundingClientRect();
+        return {
+          frameFits:
+            Math.abs(frame.top - viewport.offsetTop) < 1 &&
+            Math.abs(frame.left - viewport.offsetLeft) < 1 &&
+            Math.abs(frame.height - viewport.height) < 1 &&
+            Math.abs(frame.width - viewport.width) < 1,
+          sendFits:
+            send.top >= viewport.offsetTop &&
+            send.bottom <= viewport.offsetTop + viewport.height &&
+            send.left >= viewport.offsetLeft &&
+            send.right <= viewport.offsetLeft + viewport.width,
+        };
+      }),
+    )
+    .toEqual({ frameFits: true, sendFits: true });
+}
+
+test("fullscreen Send follows the visible viewport when it shrinks and pans", async ({ page }) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "composer-visible-viewport-",
+    title: "Visible viewport composer",
+  });
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    await writeCompactDraft(page, "First line\nSecond line\nThird line");
+    await enterComposerFullscreen(page);
+    await expectFullscreenInsideVisibleViewport(page);
+    await shrinkVisibleViewport(page);
+    await expectFullscreenInsideVisibleViewport(page);
+    await panVisibleViewport(page);
+    await expectFullscreenInsideVisibleViewport(page);
+  } finally {
+    await agent.cleanup();
+  }
+});

packages/app/e2e/browser/new-workspace-dictation-submit.spec.ts

@@ -6,6 +6,15 @@ import {
   selectWorkspaceIsolation,
 } from "../support/helpers/new-workspace";
 import { seedWorkspace } from "../support/helpers/seed-client";
+import { openAgentRoute, seedMockAgentWorkspace } from "../support/helpers/mock-agent";
+import {
+  composerLocator,
+  expectComposerVisible,
+  fillComposerDraft,
+  enterComposerFullscreen,
+  resizeComposerViewport,
+  expectComposerFullscreenControls,
+} from "../support/helpers/composer";
 import { waitForSidebarHydration } from "../support/helpers/workspace-ui";
 
 type WebSocketMessage = string | Buffer;
@@ -196,3 +205,52 @@ test.describe("New Workspace dictation submit", () => {
     }
   });
 });
+
+async function startDictationWithShortcut(page: Page): Promise<void> {
+  await composerLocator(page).press("Control+d");
+}
+
+test("dictation shortcut leaves retained fullscreen and exposes recording controls", async ({
+  page,
+}) => {
+  const agent = await seedMockAgentWorkspace({
+    repoPrefix: "fullscreen-dictation-",
+    title: "Fullscreen dictation shortcut",
+  });
+  await installSyntheticMicrophone(page);
+  const harness = await installDictationFailureHarness(page);
+  const draft = "First line\nSecond line\nThird line";
+  try {
+    await resizeComposerViewport(page, "portrait");
+    await openAgentRoute(page, agent);
+    await expectComposerVisible(page);
+    await fillComposerDraft(page, draft);
+    await enterComposerFullscreen(page);
+    await resizeComposerViewport(page, "landscape");
+    await expectComposerFullscreenControls(page);
+    await startDictationWithShortcut(page);
+    await harness.waitForAudio();
+    await expect(page.getByRole("button", { name: "Exit fullscreen", exact: true })).toHaveCount(0);
+    await expect(page.getByRole("button", { name: "Cancel dictation", exact: true })).toBeVisible();
+    await expect(
+      page.getByRole("button", { name: "Insert transcription", exact: true }),
+    ).toBeVisible();
+    await expect(
+      page.getByRole("button", { name: "Insert transcription and send", exact: true }),
+    ).toBeVisible();
+    await page.getByRole("button", { name: "Cancel dictation", exact: true }).click();
+    await expect(composerLocator(page)).toBeEditable();
+    await expect(composerLocator(page)).toHaveValue(draft);
+    await resizeComposerViewport(page, "portrait");
+    await enterComposerFullscreen(page);
+    await resizeComposerViewport(page, "landscape");
+    await composerLocator(page).press("Control+Shift+d");
+    await expect(page.getByRole("button", { name: "Exit fullscreen", exact: true })).toHaveCount(0);
+    await expect(
+      page.getByText("Realtime voice is disabled in this test.", { exact: true }),
+    ).toBeVisible();
+    await expect(composerLocator(page)).toHaveValue(draft);
+  } finally {
+    await agent.cleanup();
+  }
+});

packages/app/e2e/browser/new-workspace-launch-terminal.spec.ts

@@ -9,13 +9,12 @@ import {
   expectTerminalPreviewCommand,
   expectWorkspaceOpensWithTerminalTab,
   fillTerminalPrompt,
-  seedTerminalProfiles,
+  launchTrigger,
   selectLaunchOption,
   submitTerminalLaunch,
   terminalLaunchSubmit,
   terminalPromptInput,
   type TerminalProfile,
-  type TerminalProfileSeed,
 } from "../support/helpers/new-workspace-launch";
 
 // Someone who wants a terminal agent instead of a chat: they pick a profile
@@ -42,17 +41,18 @@ const BARE_PROFILE: TerminalProfile = {
   args: ["-c", "echo bare-launch-static-line; exec cat"],
 };
 
+test.use({
+  e2eDaemonConfig: { version: 1, daemon: { terminalProfiles: [PROMPT_PROFILE, BARE_PROFILE] } },
+});
+
 test.describe("New workspace: launching a terminal", () => {
   let workspace: SeededWorkspace;
-  let profileSeed: TerminalProfileSeed;
 
   test.beforeEach(async () => {
     workspace = await seedWorkspace({ repoPrefix: "launch-terminal-" });
-    profileSeed = await seedTerminalProfiles([PROMPT_PROFILE, BARE_PROFILE]);
   });
 
   test.afterEach(async () => {
-    await profileSeed.restore();
     await workspace?.cleanup();
   });
 
@@ -97,4 +97,51 @@ test.describe("New workspace: launching a terminal", () => {
       await expectTerminalOutputContains(page, "bare-launch-static-line");
     });
   });
+
+  test("switching terminal profiles restores the prompt and its fullscreen affordance", async ({
+    page,
+  }) => {
+    await gotoAppShell(page);
+    await waitForSidebarHydration(page);
+    await openNewWorkspaceComposer(page, {
+      projectKey: workspace.projectKey,
+      projectDisplayName: workspace.projectDisplayName,
+    });
+    await page.setViewportSize({ width: 390, height: 844 });
+    const prompt = "First replacement line\nSecond replacement line\nThird replacement line";
+    const selectProfile = async (profile: TerminalProfile) => {
+      await launchTrigger(page).click();
+      const option = page.getByRole("menuitem").filter({ hasText: profile.name });
+      await option.click();
+      await expect(option).not.toBeVisible();
+    };
+    const fullscreen = page.getByRole("button", { name: "Fullscreen", exact: true });
+
+    await test.step("restore a multiline prompt after a read-only profile", async () => {
+      await selectProfile(PROMPT_PROFILE);
+      await fillTerminalPrompt(page, prompt);
+      await expect(fullscreen).toBeVisible();
+      await selectProfile(BARE_PROFILE);
+      await expect(terminalPromptInput(page)).toHaveCount(0);
+      await selectProfile(PROMPT_PROFILE);
+      await expect(terminalPromptInput(page)).toHaveValue(prompt);
+      await expect(fullscreen).toBeVisible();
+    });
+
+    await test.step("restore the locally edited prompt and measure subsequent typing", async () => {
+      await fillTerminalPrompt(page, "Short draft");
+      await expect(fullscreen).toHaveCount(0);
+      await selectProfile(BARE_PROFILE);
+      await selectProfile(PROMPT_PROFILE);
+      await expect(terminalPromptInput(page)).toHaveValue("Short draft");
+      await expect(fullscreen).toHaveCount(0);
+      await terminalPromptInput(page).press("End");
+      await terminalPromptInput(page).press("Shift+Enter");
+      await terminalPromptInput(page).pressSequentially("Second");
+      await terminalPromptInput(page).press("Shift+Enter");
+      await terminalPromptInput(page).pressSequentially("Third");
+      await expect(terminalPromptInput(page)).toHaveValue("Short draft\nSecond\nThird");
+      await expect(fullscreen).toBeVisible();
+    });
+  });
 });

packages/app/e2e/browser/project-path-spaces.spec.ts

@@ -0,0 +1,64 @@
+import { execFileSync } from "node:child_process";
+import { mkdtemp, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { expect, test as base } from "../support/fixtures";
+import { gotoWorkspace } from "../support/helpers/launcher";
+import { openChangesTreePanel } from "../support/helpers/workspace-tabs";
+
+const test = base.extend<{ projectWithTrailingSpace: string }>({
+  projectWithTrailingSpace: async ({ e2eWorkerClient: client }, provide) => {
+    const root = await mkdtemp(path.join(tmpdir(), "paseo-project-path-spaces-"));
+    try {
+      const repoPath = path.join(root, "repo ");
+      execFileSync("git", ["init", "-b", "main", repoPath], { stdio: "pipe" });
+      execFileSync(
+        "git",
+        [
+          "-c",
+          "user.name=Paseo Test",
+          "-c",
+          "user.email=test@getpaseo.local",
+          "-c",
+          "commit.gpgsign=false",
+          "commit",
+          "--allow-empty",
+          "-m",
+          "initial",
+        ],
+        { cwd: repoPath, stdio: "pipe" },
+      );
+      await writeFile(path.join(repoPath, "visible-change.txt"), "a change\n");
+      const added = await client.addProject(repoPath);
+      expect(added.error).toBeNull();
+      const projectId = added.project!.projectId;
+      try {
+        const created = await client.createWorkspace({
+          source: { kind: "directory", path: repoPath, projectId },
+        });
+        expect(created.error).toBeNull();
+        await provide(created.workspace!.id);
+      } finally {
+        await client.removeProject(projectId);
+      }
+    } finally {
+      await rm(root, { recursive: true, force: true });
+    }
+  },
+});
+
+test.skip(
+  process.platform === "win32",
+  "Windows does not preserve trailing spaces in folder names",
+);
+
+test("Changes shows files in a project whose folder ends in a space", async ({
+  page,
+  projectWithTrailingSpace,
+}, testInfo) => {
+  await gotoWorkspace(page, projectWithTrailingSpace);
+  await openChangesTreePanel(page);
+  await expect(page.getByText("visible-change.txt", { exact: true }).first()).toBeVisible();
+  await expect(page.getByText("Not a git repository", { exact: true })).toHaveCount(0);
+  await page.screenshot({ path: testInfo.outputPath("changes.png") });
+});

packages/app/e2e/mobile/system-bars/android.mjs

@@ -0,0 +1,62 @@
+// Open Settings > Appearance in a native Android app loaded from this checkout.
+// AGENT_DEVICE_STATE_DIR=<state-dir> node packages/app/e2e/mobile/system-bars/android.mjs <session> <adb-serial> <app-id>
+// Requires English UI and a dedicated emulator. Leaves System theme and light OS appearance.
+import assert from "node:assert/strict";
+import { execFileSync } from "node:child_process";
+import { setTimeout as delay } from "node:timers/promises";
+
+const [, , session, serial, appId] = process.argv;
+assert(session && serial && appId, "Pass the agent-device session, adb serial, and app ID");
+
+function ad(...args) {
+  return execFileSync("agent-device", [...args, "--session", session], {
+    encoding: "utf8",
+    timeout: 60_000,
+  });
+}
+
+function windowState() {
+  const state = execFileSync("adb", ["-s", serial, "shell", "dumpsys", "window"], {
+    encoding: "utf8",
+    timeout: 10_000,
+  });
+  assert(state.match(/mCurrentFocus=.*\n/)?.[0].includes(`${appId}/`), "App must be focused");
+  const regions = state.match(/mLastStatusBarAppearanceRegions=\s*\n([^\n]+)/)?.[1];
+  assert(regions, "Android must report the status-bar appearance region");
+  return regions.includes("LIGHT_STATUS_BARS");
+}
+
+async function expectDarkIcons(expected, context) {
+  const deadline = Date.now() + 5_000;
+  do {
+    if (windowState() === expected) {
+      console.log(`PASS: ${context}`);
+      return;
+    }
+    await delay(100);
+  } while (Date.now() < deadline);
+  assert.equal(windowState(), expected, context);
+}
+
+function selectTheme(theme) {
+  const current = ad("snapshot", "-i").match(/"Theme: ([^"]+)"/)?.[1];
+  assert(current, "Start on Settings > Appearance");
+  ad("press", `label="Theme: ${current}"`, "--settle");
+  ad("press", `label="${theme}"`, "--settle");
+  ad("wait", "text", `Theme: ${theme}`, "5000");
+}
+
+ad("settings", "appearance", "light");
+selectTheme("Light");
+await expectDarkIcons(true, "Light app theme uses dark status icons");
+selectTheme("Dark");
+await expectDarkIcons(false, "Dark app theme uses light status icons");
+selectTheme("System");
+await expectDarkIcons(true, "System theme starts with dark icons on light OS appearance");
+ad("settings", "appearance", "dark");
+await expectDarkIcons(
+  false,
+  "System theme follows an OS change to dark without reopening settings",
+);
+ad("settings", "appearance", "light");
+await expectDarkIcons(true, "System theme follows an OS change back to light");

packages/app/e2e/mobile/workspace-memory/README.md

@@ -0,0 +1,21 @@
+# Android workspace memory diagnostic
+
+Supplemental reproduction for [#4408](https://github.com/getpaseo/paseo/issues/4408), using the production 0.11.2 APK on an Android 16 emulator. This tests an adapted failure: opening the sidebar with 800 projects, each containing one workspace, produced a `LOW_MEMORY` exit after 66–90 seconds. It does not reproduce the reported 18-second cold-start ANR or establish its cause.
+
+Before running:
+
+- Use a dedicated emulator with the production APK installed and notifications permission settled. Bind the agent-device session to that emulator before running.
+- Pair the app with an isolated daemon containing 800 active workspaces, each in its own project. Use Project grouping and leave projects expanded. The observed fixture used existing directories inside a Git checkout, with workspace titles permuted by `(index * 317) % 800`, no agents, and no terminals.
+- Record the daemon revision, emulator RAM and Java heap settings, and the project/workspace distribution. Device memory pressure controls whether Android kills the app.
+
+Run from the repository root with the agent-device session, Android serial, and an artifact directory:
+
+```sh
+node packages/app/e2e/mobile/workspace-memory/android.mjs workspace-memory emulator-5556 .dev/workspace-memory
+```
+
+The test cold-starts the paired app, opens its sidebar, samples memory and the process ID every five seconds for two minutes, and verifies that closing the sidebar responds. A process exit or restart fails the assertion. Memory, exit records, and logs stay in the supplied artifact directory.
+
+Control: repeat with 800 workspaces grouped into one project. That distribution survived the two-minute automated check and responded to closing the sidebar, with total PSS near 300 MB. The project-per-workspace fixture reached about 2.5 GB PSS before Android recorded `LOW_MEMORY`; its Java heap rose and fell rather than showing the reporter's full-heap ANR. Neither result proves that shared collators would fix the report.
+
+This diagnostic is deliberately outside CI and contains no production change.

packages/app/e2e/mobile/workspace-memory/android.mjs

@@ -0,0 +1,65 @@
+// Requires a paired production app and the workspace fixture described in README.md.
+import assert from "node:assert/strict";
+import { execFileSync } from "node:child_process";
+import { mkdirSync, writeFileSync } from "node:fs";
+import { join } from "node:path";
+import { setTimeout as delay } from "node:timers/promises";
+
+const [, , session, serial, artifacts] = process.argv;
+assert(session && serial && artifacts, "Pass session, Android serial, and artifact directory");
+mkdirSync(artifacts, { recursive: true });
+
+function ad(...args) {
+  return execFileSync("agent-device", [...args, "--session", session], {
+    encoding: "utf8",
+    timeout: 60_000,
+  });
+}
+function adb(...args) {
+  return execFileSync("adb", ["-s", serial, ...args], {
+    encoding: "utf8",
+    timeout: 15_000,
+  });
+}
+function pid() {
+  try {
+    return adb("shell", "pidof", "sh.paseo").trim();
+  } catch {
+    return "";
+  }
+}
+
+ad("open", "sh.paseo", "--relaunch", "--platform", "android");
+ad("wait", "text", "Open menu", "15000");
+assert.equal(
+  JSON.parse(ad("perf", "memory", "sample", "--json")).data.deviceId,
+  serial,
+  "Session and adb serial must address the same device",
+);
+const initialPid = pid();
+assert(initialPid, "App must have a process before opening the sidebar");
+ad("press", 'label="Open menu"', "--settle");
+const startedAt = Date.now();
+const samples = [];
+try {
+  while (Date.now() - startedAt < 120_000) {
+    const currentPid = pid();
+    samples.push({
+      elapsedMs: Date.now() - startedAt,
+      pid: currentPid,
+      meminfo: currentPid ? adb("shell", "dumpsys", "meminfo", "sh.paseo") : "",
+    });
+    writeFileSync(join(artifacts, "samples.json"), JSON.stringify(samples, null, 2));
+    assert.equal(currentPid, initialPid, "Opening the workspace sidebar must keep the app alive");
+    await delay(5_000);
+  }
+  ad("press", 'label="Close sidebar"', "--settle");
+  ad("wait", "text", "Open menu", "10000");
+  console.log("PASS: app survived two minutes with the sidebar open and responded to Close");
+} finally {
+  writeFileSync(
+    join(artifacts, "exit-info.txt"),
+    adb("shell", "dumpsys", "activity", "exit-info", "sh.paseo"),
+  );
+  writeFileSync(join(artifacts, "logcat.txt"), adb("logcat", "-d", "-t", "4000"));
+}

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

@@ -316,3 +316,133 @@ export async function openGithubWorkspace(
     },
   };
 }
+
+const COMPOSER_TEST_IMAGE_BASE64 =
+  "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==";
+
+export async function attachComposerTestImage(page: Page): Promise<void> {
+  await attachImageFromMenu(page, {
+    name: "fullscreen.png",
+    mimeType: "image/png",
+    buffer: Buffer.from(COMPOSER_TEST_IMAGE_BASE64, "base64"),
+  });
+}
+
+export async function pasteComposerTestImage(page: Page): Promise<boolean> {
+  return composerInput(page).evaluate((input, base64) => {
+    const bytes = Uint8Array.from(atob(base64), (character) => character.charCodeAt(0));
+    const clipboardData = new DataTransfer();
+    clipboardData.items.add(new File([bytes], "pasted.png", { type: "image/png" }));
+    const event = new ClipboardEvent("paste", { clipboardData, bubbles: true, cancelable: true });
+    input.dispatchEvent(event);
+    return event.defaultPrevented;
+  }, COMPOSER_TEST_IMAGE_BASE64);
+}
+
+export async function enterComposerFullscreen(page: Page): Promise<void> {
+  await page.getByRole("button", { name: "Fullscreen", exact: true }).click();
+}
+export async function exitComposerFullscreen(page: Page): Promise<void> {
+  await page.getByRole("button", { name: "Exit fullscreen", exact: true }).click();
+}
+export async function resizeComposerViewport(
+  page: Page,
+  orientation: "portrait" | "landscape" | "short",
+): Promise<void> {
+  const sizes = {
+    portrait: { width: 390, height: 844 },
+    landscape: { width: 844, height: 390 },
+    short: { width: 390, height: 390 },
+  };
+  await page.setViewportSize(sizes[orientation]);
+}
+export async function selectComposerDraftRange(
+  page: Page,
+  start: number,
+  end: number,
+): Promise<void> {
+  await composerInput(page).focus();
+  await composerInput(page).evaluate(
+    (element, selection) => {
+      const input = element as HTMLTextAreaElement;
+      input.setSelectionRange(selection.start, selection.end);
+      input.dispatchEvent(new Event("select", { bubbles: true }));
+    },
+    { start, end },
+  );
+}
+export async function expectComposerDraftSelection(
+  page: Page,
+  start: number,
+  end: number,
+): Promise<void> {
+  await expect
+    .poll(() =>
+      composerInput(page).evaluate((element) => {
+        const input = element as HTMLTextAreaElement;
+        return [input.selectionStart, input.selectionEnd];
+      }),
+    )
+    .toEqual([start, end]);
+}
+export async function expectComposerFullscreenControls(page: Page): Promise<void> {
+  await expect(page.getByRole("button", { name: "Exit fullscreen", exact: true })).toBeVisible();
+  await expect(page.getByTestId("composer-fullscreen").getByRole("button")).toHaveCount(2);
+  await expect(composerInput(page)).toHaveCount(1);
+}
+export async function sendComposerWithButton(page: Page): Promise<void> {
+  await page.getByRole("button", { name: "Send message", exact: true }).click();
+}
+export async function queueComposerWithButton(page: Page): Promise<void> {
+  await page.getByRole("button", { name: "Queue message", exact: true }).click();
+}
+export async function configureComposerQueueSend(page: Page): Promise<void> {
+  await page.addInitScript(() =>
+    localStorage.setItem("@paseo:app-settings", JSON.stringify({ sendBehavior: "queue" })),
+  );
+}
+
+/** Drive the real tab chooser's commands even when fullscreen covers its pointer surface.
+ * This exercises retained activity changes, not a claim that covered chrome is clickable.
+ */
+export async function activateRetainedComposerTab(page: Page, title: string): Promise<void> {
+  await page
+    .getByTestId("workspace-tab-switcher-trigger")
+    .evaluate((element) => (element as HTMLElement).click());
+  const option = page.getByText(title, { exact: true }).filter({ visible: true }).last();
+  await expect(option).toBeVisible();
+  await option.evaluate((element) => (element as HTMLElement).click());
+}
+
+export async function recordVisibleComposerGeometry(page: Page): Promise<void> {
+  await page.evaluate(() => {
+    const frames: { input: number; root: number }[] = [];
+    Reflect.set(window, "__composerGeometryFrames", frames);
+    let running = true;
+    const tick = () => {
+      if (!running) return;
+      for (const root of document.querySelectorAll('[data-testid="message-input-root"]')) {
+        if (root.getClientRects().length === 0) continue;
+        const input = root.querySelector("textarea");
+        if (input)
+          frames.push({
+            input: input.getBoundingClientRect().height,
+            root: root.getBoundingClientRect().height,
+          });
+      }
+      requestAnimationFrame(tick);
+    };
+    requestAnimationFrame(tick);
+    Reflect.set(window, "__stopComposerGeometry", () => {
+      running = false;
+    });
+  });
+}
+export async function expectNoCollapsedVisibleComposer(page: Page): Promise<void> {
+  const frames = await page.evaluate(() => {
+    Reflect.get(window, "__stopComposerGeometry")?.();
+    return Reflect.get(window, "__composerGeometryFrames") as { input: number; root: number }[];
+  });
+  expect(frames.length).toBeGreaterThan(0);
+  expect(frames.filter((frame) => frame.root < 42 || frame.input < 42)).toEqual([]);
+}

packages/app/e2e/support/helpers/plugin-timeline.ts

@@ -47,6 +47,65 @@ export default function contribute(client) {
   return () => {};
 }`;
 
+const PROMPT_PLUGIN_ID = "timeline-prompt-e2e";
+
+function promptClientSource(prompts?: readonly string[]): string {
+  return `import React from "react";
+import { Text, View } from "react-native";
+import { z } from "zod";
+
+const selectedPrompts = ${JSON.stringify(prompts ?? null)};
+
+function PromptCard({ item }) {
+  return <View testID="plugin-prompt"><Text>{item.data.text}</Text></View>;
+}
+
+export default function contribute(client) {
+  client.addTimelineTransformer({
+    id: "prompt",
+    query: { itemType: "user_message" },
+    transform({ item }) {
+      if (selectedPrompts && !selectedPrompts.includes(item.text)) return undefined;
+      return { items: [{ type: "plugin", kind: "prompt", version: 1, data: { text: item.text } }] };
+    },
+  });
+  client.addTimelineRenderer({
+    kind: "prompt", version: 1,
+    schema: z.object({ text: z.string() }),
+    Component: PromptCard,
+  });
+  return () => {};
+}`;
+}
+
+async function withDirectoryPlugin(options: {
+  pluginId: string;
+  source: string;
+  run: () => Promise<void>;
+}): Promise<void> {
+  const { pluginId, source, run } = options;
+  const directory = await mkdtemp(path.join(tmpdir(), "paseo-timeline-plugin-"));
+  const pluginClient = await connectNewWorkspaceDaemonClient({ ownProjects: false });
+  const previous = await pluginClient.getDaemonConfig();
+  try {
+    await writeFile(
+      path.join(directory, "paseo-plugin.json"),
+      JSON.stringify({ id: pluginId, requirements: pluginRequirements }),
+    );
+    await writeFile(path.join(directory, "index.client.tsx"), source);
+    await pluginClient.patchDaemonConfig({ pluginsEnabled: true });
+    await pluginClient.installDirectoryPlugin(directory);
+    await run();
+  } finally {
+    await pluginClient.removePlugin(pluginId);
+    await pluginClient.patchDaemonConfig({
+      pluginsEnabled: previous.config.pluginsEnabled ?? false,
+    });
+    await pluginClient.close();
+    await rm(directory, { recursive: true, force: true });
+  }
+}
+
 export async function withTimelinePlugin(
   page: Page,
   info: TestInfo,
@@ -60,7 +119,6 @@ export async function withTimelinePlugin(
       JSON.stringify({ toolCallDetailLevel: "overview" }),
     );
   });
-  const directory = await mkdtemp(path.join(tmpdir(), "paseo-timeline-plugin-"));
   const agent = await seedMockAgentWorkspace({
     repoPrefix: "timeline-plugin-",
     title: "Timeline plugin regression",
@@ -73,40 +131,53 @@ export async function withTimelinePlugin(
           }
         : {},
   });
-  const pluginClient = await connectNewWorkspaceDaemonClient({ ownProjects: false });
-  const previous = await pluginClient.getDaemonConfig();
   try {
-    await writeFile(
-      path.join(directory, "paseo-plugin.json"),
-      JSON.stringify({ id: PLUGIN_ID, requirements: pluginRequirements }),
-    );
-    await writeFile(path.join(directory, "index.client.tsx"), CLIENT_SOURCE);
-    await pluginClient.patchDaemonConfig({ pluginsEnabled: true });
-    await pluginClient.installDirectoryPlugin(directory);
-    await openAgentRoute(page, agent);
-    await expect(page.getByRole("textbox", { name: "Message agent..." }).first()).toBeVisible();
-    await run(agent);
-    await info.attach("timeline-plugin", {
-      body: await page.screenshot({ path: info.outputPath("timeline-plugin.png") }),
-      contentType: "image/png",
+    await withDirectoryPlugin({
+      pluginId: PLUGIN_ID,
+      source: CLIENT_SOURCE,
+      run: async () => {
+        try {
+          await openAgentRoute(page, agent);
+          await expect(
+            page.getByRole("textbox", { name: "Message agent..." }).first(),
+          ).toBeVisible();
+          await run(agent);
+          await info.attach("timeline-plugin", {
+            body: await page.screenshot({ path: info.outputPath("timeline-plugin.png") }),
+            contentType: "image/png",
+          });
+        } catch (error) {
+          await info.attach("timeline-before-cleanup", {
+            body: await page.screenshot({ path: info.outputPath("timeline-before-cleanup.png") }),
+            contentType: "image/png",
+          });
+          throw error;
+        }
+      },
     });
-  } catch (error) {
-    await info.attach("timeline-before-cleanup", {
-      body: await page.screenshot({ path: info.outputPath("timeline-before-cleanup.png") }),
-      contentType: "image/png",
-    });
-    throw error;
   } finally {
-    await pluginClient.removePlugin(PLUGIN_ID);
-    await pluginClient.patchDaemonConfig({
-      pluginsEnabled: previous.config.pluginsEnabled ?? false,
-    });
-    await pluginClient.close();
     await agent.cleanup();
-    await rm(directory, { recursive: true, force: true });
   }
 }
 
+/** Draws all prompts, or only the selected prompts, as plugin cards. */
+export async function withPromptTimelinePlugin(
+  run: () => Promise<void>,
+  prompts?: readonly string[],
+): Promise<void> {
+  await withDirectoryPlugin({
+    pluginId: PROMPT_PLUGIN_ID,
+    source: promptClientSource(prompts),
+    run,
+  });
+}
+
+export async function expectPromptsDrawnByPlugin(page: Page): Promise<void> {
+  const timeline = page.locator('[data-testid="agent-chat-scroll"]:visible').first();
+  await expect(timeline.getByTestId("plugin-prompt").first()).toBeVisible({ timeout: 30_000 });
+  await expect(timeline.getByTestId("user-message")).toHaveCount(0);
+}
+
 export async function requestPluginTimeline(agent: MockAgentWorkspace): Promise<void> {
   await agent.client.sendAgentMessage(agent.agentId, "Exercise timeline transforms.");
 }
@@ -142,3 +213,21 @@ export async function expectBothConsecutiveTools(page: Page): Promise<void> {
   await grep.scrollIntoViewIfNeeded();
   await expect(grep).toBeVisible();
 }
+
+/** The row belongs to the virtualized history, not the always-mounted recent window. */
+export async function expectVirtualizedPluginPromptVisible(
+  page: Page,
+  prompt: string,
+): Promise<void> {
+  const timeline = page.locator('[data-testid="agent-chat-scroll"]:visible').first();
+  await expect(
+    timeline.locator("[data-index]").getByTestId("plugin-prompt").filter({ hasText: prompt }),
+  ).toBeVisible();
+}
+
+export async function attachPromptTimelineEvidence(page: Page, info: TestInfo): Promise<void> {
+  await info.attach("plugin-outline-jump", {
+    body: await page.screenshot({ path: info.outputPath("plugin-outline-jump.png") }),
+    contentType: "image/png",
+  });
+}

packages/app/index.ts

@@ -1,10 +1,6 @@
-// Polyfill crypto.randomUUID for React Native before any other imports
-import { polyfillCrypto } from "./src/polyfills/crypto";
-polyfillCrypto();
-
-// Polyfill screen.orientation for WebKitGTK desktop runtimes that lack the API.
-import { polyfillScreenOrientation } from "./src/polyfills/screen-orientation";
-polyfillScreenOrientation();
+// Install runtime polyfills before any other module evaluates. Keep this the first import.
+// oxlint-disable-next-line import/no-unassigned-import -- Polyfills install on import.
+import "./src/polyfills/install-early";
 
 // Configure Unistyles before Expo Router pulls in any components using StyleSheet.
 import "./src/styles/unistyles";

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

@@ -11,7 +11,7 @@ import {
   type UserMessageItem,
 } from "@/types/stream";
 import { transformTimelineItem, type TimelineItemTransform } from "@/plugins/timeline/model";
-import { createStreamPresentation } from "./presentation";
+import { createStreamPresentation, getStreamItemMessageId } from "./presentation";
 import { buildAgentStreamRenderModel } from "./model";
 
 const runtime = {
@@ -29,7 +29,7 @@ const runtime = {
 } as unknown as PluginClientRuntime;
 
 function installProbe(
-  itemType: "assistant_message" | "tool_call" | "reasoning",
+  itemType: "user_message" | "assistant_message" | "tool_call" | "reasoning",
   condition = "true",
 ): InstalledPlugin {
   const clientBundle = `(function() {
@@ -160,6 +160,23 @@ describe("stream presentation through installed plugins", () => {
     },
   );
 
+  it("addresses a prompt a plugin replaced by the prompt's own id", () => {
+    const harness = streamHarness(installedTransform(installProbe("user_message")));
+    const rendered = rows(
+      harness.send({
+        type: "timeline",
+        provider: "claude",
+        item: { type: "user_message", messageId: "prompt-1", text: "Earlier prompt" },
+      }),
+    );
+    const source = rows(harness.source());
+
+    expect(source).toMatchObject([{ kind: "user_message", id: "prompt-1" }]);
+    expect(rendered).toMatchObject([{ kind: "plugin", id: "probe-plugin/prompt-1/0" }]);
+    // The chat outline jumps to the source id; the row it lands on is the plugin's.
+    expect(rendered.map(getStreamItemMessageId)).toEqual(["prompt-1"]);
+  });
+
   it("finishes one message before streaming a different message ID", () => {
     const harness = streamHarness(installedTransform(installProbe("assistant_message")));
     harness.send(assistant("First\n\nBody", "first"));

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

@@ -26,10 +26,14 @@ function retainItems(previous: StreamItem[], next: StreamItem[]): StreamItem[] {
 /**
  * The source message a display row belongs to. Every assistant message is split into
  * Markdown blocks, so an assistant row id never equals its message id; anything that
- * addresses a message — find, scroll-to-message, history reveal — asks for this.
+ * addresses a message — find, scroll-to-message, history reveal — asks for this. A
+ * plugin row a timeline transformer projected answers for the item it replaced, whose
+ * id is what the chat outline and find hold.
  */
 export function getStreamItemMessageId(item: StreamItem): string {
-  return item.kind === "assistant_message" ? (item.blockGroupId ?? item.id) : item.id;
+  if (item.kind === "assistant_message") return item.blockGroupId ?? item.id;
+  if (item.kind === "plugin") return item.sourceId ?? item.id;
+  return item.id;
 }
 
 /**

packages/app/src/app/_layout.tsx

@@ -1,3 +1,4 @@
+import { ComposerEditingSessionsProvider } from "@/composer/editing-session";
 import "@/styles/unistyles";
 import { BottomSheetModalProvider } from "@gorhom/bottom-sheet";
 import { PortalProvider } from "@gorhom/portal";
@@ -102,7 +103,6 @@ import {
   useKeyboardActionDispatcher,
 } from "@/keyboard/keyboard-action-dispatcher-context";
 import { polyfillCrypto } from "@/polyfills/crypto";
-import { polyfillNavigator } from "@/polyfills/navigator";
 import {
   getHostRuntimeStore,
   hasConfiguredLocalDaemonOverride,
@@ -138,7 +138,6 @@ import {
   type WebNotificationClickDetail,
 } from "@/utils/os-notifications";
 
-polyfillNavigator();
 polyfillCrypto();
 
 export interface HostRuntimeBootstrapState {
@@ -625,7 +624,11 @@ function AppContainer({ children, chromeEnabled: chromeEnabledOverride }: AppCon
     surface
   );
 
-  return <CommandCenterProvider>{content}</CommandCenterProvider>;
+  return (
+    <ComposerEditingSessionsProvider>
+      <CommandCenterProvider>{content}</CommandCenterProvider>
+    </ComposerEditingSessionsProvider>
+  );
 }
 
 function SidebarChrome({

packages/app/src/appearance/provider.tsx

@@ -21,6 +21,7 @@ import {
 } from "@/plugins/themes";
 import { PLUGIN_THEME_NAMES, PLUGIN_THEME_PREFERENCE, THEME_TO_UNISTYLES } from "@/styles/theme";
 import { applyAppearance } from "./apply";
+import { AppearanceSystemBars } from "./system-bars";
 
 interface ContributedThemes {
   options: PluginThemeOption[];
@@ -107,7 +108,10 @@ export function AppearanceProvider({ children }: { children: ReactNode }) {
   if (!hasAppliedAppearance) return null;
 
   return (
-    <ContributedThemesContext.Provider value={value}>{children}</ContributedThemesContext.Provider>
+    <ContributedThemesContext.Provider value={value}>
+      <AppearanceSystemBars />
+      {children}
+    </ContributedThemesContext.Provider>
   );
 }
 

packages/app/src/appearance/system-bars.android.tsx

@@ -0,0 +1,11 @@
+import { SystemBars } from "react-native-edge-to-edge";
+import { withUnistyles } from "react-native-unistyles";
+import type { Theme } from "@/styles/theme";
+
+function ThemeSystemBars({ colorScheme }: Pick<Theme, "colorScheme">) {
+  return <SystemBars style={colorScheme === "light" ? "dark" : "light"} />;
+}
+
+export const AppearanceSystemBars = withUnistyles(ThemeSystemBars, (theme) => ({
+  colorScheme: theme.colorScheme,
+}));

packages/app/src/appearance/system-bars.tsx

@@ -0,0 +1,3 @@
+export function AppearanceSystemBars() {
+  return null;
+}

packages/app/src/components/ui/text-input/text-input.native.test.tsx

@@ -56,6 +56,16 @@ afterEach(() => {
 
 function noop() {}
 
+function createHandleRecorder() {
+  const handleRef = createRef<EditingTextInputHandle>();
+  const received: (EditingTextInputHandle | null)[] = [];
+  function assignHandle(handle: EditingTextInputHandle | null) {
+    received.push(handle);
+    handleRef.current = handle;
+  }
+  return { handleRef, received, assignHandle };
+}
+
 describe("EditingTextInputNative", () => {
   it("uses the bottom-sheet input only inside a bottom sheet", () => {
     act(() => {
@@ -76,6 +86,32 @@ describe("EditingTextInputNative", () => {
     expect(bottomSheetTextInputRender.mock.calls[0]?.[0]).toMatchObject({ testID: "inside" });
   });
 
+  it("keeps its editing handle and selection when native editing rerenders the leaf", () => {
+    const { handleRef, received, assignHandle } = createHandleRecorder();
+    act(() =>
+      root?.render(<EditingTextInput ref={assignHandle} initialValue="initial" multiline />),
+    );
+    const input = container?.querySelector("textarea");
+    if (!input) throw new Error("Expected native editing surface");
+    const handle = handleRef.current;
+    act(() => {
+      handle?.focus();
+      const setValue = Object.getOwnPropertyDescriptor(HTMLTextAreaElement.prototype, "value")?.set;
+      if (!setValue) throw new Error("Expected input value setter");
+      setValue.call(input, "native edit");
+      input.setSelectionRange(2, 5);
+      input.dispatchEvent(new InputEvent("input", { bubbles: true, data: "native edit" }));
+    });
+    expect(handleRef.current).toBe(handle);
+    expect(received).toEqual([handle]);
+    expect(handle?.getText()).toBe("native edit");
+    expect([input.selectionStart, input.selectionEnd]).toEqual([2, 5]);
+    expect(document.activeElement).toBe(input);
+    act(() => root?.unmount());
+    root = null;
+    expect(received).toEqual([handle, null]);
+  });
+
   it("clears text via clear() when replaceText receives an empty string", () => {
     const handleRef = createRef<EditingTextInputHandle>();
 
@@ -105,12 +141,14 @@ describe("EditingTextInputNative", () => {
       );
     });
     const grownInput = container?.querySelector("input");
+    const handle = handleRef.current;
 
     act(() => {
       handleRef.current?.reset();
     });
 
     expect(container?.querySelector("input")).not.toBe(grownInput);
+    expect(handleRef.current).toBe(handle);
   });
 
   it("restores focus after replacing a reset native input", () => {

packages/app/src/components/ui/text-input/text-input.native.tsx

@@ -69,52 +69,56 @@ export const EditingTextInput = forwardRef<EditingTextInputHandle, EditingTextIn
       setReplacement((current) => ({ ...current, autoFocus }));
     }, []);
 
-    useImperativeHandle(ref, () => ({
-      focus: () => {
-        if (isAwaitingReplacementRef.current) {
-          setReplacementFocus(true);
-          return;
-        }
-        inputRef.current?.focus();
-      },
-      blur: () => {
-        if (isAwaitingReplacementRef.current) {
-          setReplacementFocus(false);
-          return;
-        }
-        inputRef.current?.blur();
-      },
-      isFocused: () => inputRef.current?.isFocused?.() ?? false,
-      getText: () => textRef.current,
-      replaceText: (nextText, selection) => {
-        textRef.current = nextText;
-        if (inputRef.current?.replaceText) {
-          inputRef.current.replaceText(nextText, selection);
-          return;
-        }
-        if (nextText === "") {
-          inputRef.current?.clear?.();
-          return;
-        }
-        inputRef.current?.setNativeProps?.({
-          text: nextText,
-          ...(selection ? { selection } : {}),
-        });
-        if (selection) inputRef.current?.setSelection?.(selection.start, selection.end);
-      },
-      reset: () => {
-        textRef.current = "";
-        const autoFocus = inputRef.current?.isFocused?.() ?? false;
-        if (inputRef.current?.replaceText) {
-          inputRef.current.replaceText("");
-        } else {
-          inputRef.current?.clear?.();
-        }
-        isAwaitingReplacementRef.current = true;
-        setReplacement((current) => ({ revision: current.revision + 1, autoFocus }));
-      },
-      getNativeRef: () => inputRef.current?.getNativeRef?.() ?? inputRef.current,
-    }));
+    useImperativeHandle(
+      ref,
+      () => ({
+        focus: () => {
+          if (isAwaitingReplacementRef.current) {
+            setReplacementFocus(true);
+            return;
+          }
+          inputRef.current?.focus();
+        },
+        blur: () => {
+          if (isAwaitingReplacementRef.current) {
+            setReplacementFocus(false);
+            return;
+          }
+          inputRef.current?.blur();
+        },
+        isFocused: () => inputRef.current?.isFocused?.() ?? false,
+        getText: () => textRef.current,
+        replaceText: (nextText, selection) => {
+          textRef.current = nextText;
+          if (inputRef.current?.replaceText) {
+            inputRef.current.replaceText(nextText, selection);
+            return;
+          }
+          if (nextText === "") {
+            inputRef.current?.clear?.();
+            return;
+          }
+          inputRef.current?.setNativeProps?.({
+            text: nextText,
+            ...(selection ? { selection } : {}),
+          });
+          if (selection) inputRef.current?.setSelection?.(selection.start, selection.end);
+        },
+        reset: () => {
+          textRef.current = "";
+          const autoFocus = inputRef.current?.isFocused?.() ?? false;
+          if (inputRef.current?.replaceText) {
+            inputRef.current.replaceText("");
+          } else {
+            inputRef.current?.clear?.();
+          }
+          isAwaitingReplacementRef.current = true;
+          setReplacement((current) => ({ revision: current.revision + 1, autoFocus }));
+        },
+        getNativeRef: () => inputRef.current?.getNativeRef?.() ?? inputRef.current,
+      }),
+      [setReplacementFocus],
+    );
 
     const handleChangeText = useCallback(
       (nextText: string) => {

packages/app/src/components/ui/text-input/text-input.web.tsx

@@ -57,31 +57,35 @@ export const EditingTextInput = forwardRef<EditingTextInputHandle, EditingTextIn
       onChangeTextRef.current?.(nextText);
     }, []);
 
-    useImperativeHandle(ref, () => ({
-      focus: () => inputRef.current?.focus(),
-      blur: () => inputRef.current?.blur(),
-      isFocused: () => document.activeElement === inputRef.current,
-      getText: () => {
-        const input = inputRef.current as WebTextInputElement | null;
-        const nextText = input?.value ?? textRef.current;
-        textRef.current = nextText;
-        return nextText;
-      },
-      replaceText: (nextText, selection) => {
-        textRef.current = nextText;
-        const input = inputRef.current as WebTextInputElement | null;
-        if (input && "value" in input) input.value = nextText;
-        if (selection && typeof input?.setSelectionRange === "function") {
-          input.setSelectionRange(selection.start, selection.end);
-        }
-      },
-      reset: () => {
-        textRef.current = "";
-        const input = inputRef.current as WebTextInputElement | null;
-        if (input && "value" in input) input.value = "";
-      },
-      getNativeRef: () => inputRef.current,
-    }));
+    useImperativeHandle(
+      ref,
+      () => ({
+        focus: () => inputRef.current?.focus(),
+        blur: () => inputRef.current?.blur(),
+        isFocused: () => document.activeElement === inputRef.current,
+        getText: () => {
+          const input = inputRef.current as WebTextInputElement | null;
+          const nextText = input?.value ?? textRef.current;
+          textRef.current = nextText;
+          return nextText;
+        },
+        replaceText: (nextText, selection) => {
+          textRef.current = nextText;
+          const input = inputRef.current as WebTextInputElement | null;
+          if (input && "value" in input) input.value = nextText;
+          if (selection && typeof input?.setSelectionRange === "function") {
+            input.setSelectionRange(selection.start, selection.end);
+          }
+        },
+        reset: () => {
+          textRef.current = "";
+          const input = inputRef.current as WebTextInputElement | null;
+          if (input && "value" in input) input.value = "";
+        },
+        getNativeRef: () => inputRef.current,
+      }),
+      [],
+    );
 
     return (
       <TextInput

packages/app/src/components/ui/text-input/types.ts

@@ -1,6 +1,7 @@
 import type { TextInputProps } from "react-native";
 import type { NativePastedFile } from "@/composer/native-pasted-image";
 
+/** Stable for the mounted editor lifetime; reset() owns any inner input replacement. */
 export interface EditingTextInputHandle {
   focus(): void;
   blur(): void;

packages/app/src/composer/dock/index.native.tsx

@@ -2,6 +2,7 @@ import { ComposerDockBackground } from "./internal/background";
 export { ComposerDockBackground } from "./internal/background";
 import { ScrollView } from "@/components/ui/scroll-view";
 import { useSafeAreaInsets } from "react-native-safe-area-context";
+import { useIsCompactFormFactor } from "@/constants/layout";
 import { HEADER_INNER_HEIGHT } from "@/constants/layout";
 import { resolveContentMaxWidth, useAppSettings } from "@/hooks/use-settings";
 import { KeyboardTranslateView } from "@/keyboard/shift";
@@ -17,6 +18,7 @@ import Animated, {
 import { useKeyboardShift } from "@/keyboard/shift";
 import {
   resolveCenteredClearance,
+  resolveInlineComposerCapacity,
   updateComposerCapacity,
   type ComposerCapacity,
 } from "./internal/capacity";
@@ -71,12 +73,13 @@ function ComposerViewport({
 
 /** Bound the complete composer (including its controls), not just the text input. */
 function ComposerViewportContent({ style, ...props }: ViewProps) {
+  const compact = useIsCompactFormFactor();
   const capacity = useContext(ViewportCapacity);
   if (!capacity) throw new Error("ComposerViewportContent requires ComposerViewport");
   const constraint = useAnimatedStyle(() => ({
     // Only viewport changes and keyboard start/end events trigger layout. Motion
     // stays in KeyboardTranslateView and never changes this constraint per frame.
-    maxHeight: capacity.value,
+    maxHeight: resolveInlineComposerCapacity(capacity.value, compact),
   }));
 
   return (

packages/app/src/composer/dock/index.tsx

@@ -1,8 +1,10 @@
 export { ComposerDockBackground } from "./internal/background";
 import { ScrollView } from "@/components/ui/scroll-view";
-import type { ReactNode } from "react";
+import { useState, useCallback, useMemo, type ReactNode } from "react";
 import { View } from "react-native";
 import { StyleSheet } from "react-native-unistyles";
+import { resolveInlineComposerCapacity } from "./internal/capacity";
+import { useIsCompactFormFactor } from "@/constants/layout";
 import { HEADER_INNER_HEIGHT } from "@/constants/layout";
 
 interface ComposerDockProps {
@@ -14,23 +16,33 @@ export function ComposerDock({
   children: [content, composer, overlay],
   centered = false,
 }: ComposerDockProps) {
+  const compact = useIsCompactFormFactor();
+  const [availableHeight, setAvailableHeight] = useState<number>();
+  const constraint = useMemo(
+    () => ({ maxHeight: resolveInlineComposerCapacity(availableHeight, compact) }),
+    [availableHeight, compact],
+  );
+  const measureViewport = useCallback((event: import("react-native").LayoutChangeEvent) => {
+    const { height } = event.nativeEvent.layout;
+    if (height > 0) setAvailableHeight(height);
+  }, []);
   if (centered) {
     return (
-      <View style={styles.centered}>
+      <View style={styles.centered} onLayout={measureViewport}>
         <View style={styles.form}>
           <ScrollView style={styles.setup} keyboardShouldPersistTaps="handled">
             {content}
           </ScrollView>
-          <View style={styles.centeredComposer}>{composer}</View>
+          <View style={[styles.centeredComposer, constraint]}>{composer}</View>
           {overlay}
         </View>
       </View>
     );
   }
   return (
-    <View style={styles.surface}>
+    <View style={styles.surface} onLayout={measureViewport}>
       <View style={styles.content}>{content}</View>
-      <View style={styles.composer}>{composer}</View>
+      <View style={[styles.composer, constraint]}>{composer}</View>
       {overlay}
     </View>
   );

packages/app/src/composer/dock/internal/capacity.test.ts

@@ -1,11 +1,24 @@
 import { describe, expect, it } from "vitest";
 import {
   resolveCenteredClearance,
+  resolveInlineComposerCapacity,
   resolveComposerCapacity,
   updateComposerCapacity,
 } from "./capacity";
 
 describe("composer viewport", () => {
+  it("caps the complete compact composer at sixty percent of keyboard-reserved space", () => {
+    const open = updateComposerCapacity(undefined, {
+      height: 582,
+      bottomInset: 24,
+      safeAreaBottom: 0,
+      centered: false,
+      keyboardShift: 308,
+    });
+    expect(resolveInlineComposerCapacity(open.capacity, true)).toBe(147);
+    expect(resolveInlineComposerCapacity(open.capacity, false)).toBe(245);
+    expect(resolveInlineComposerCapacity(undefined, true)).toBeUndefined();
+  });
   it("preserves the editing capacity when the keyboard closes", () => {
     const viewport = { height: 582, bottomInset: 24, safeAreaBottom: 0, centered: false };
     const open = updateComposerCapacity(undefined, { ...viewport, keyboardShift: 308 });

packages/app/src/composer/dock/internal/capacity.ts

@@ -50,3 +50,13 @@ export function updateComposerCapacity(
     capacity: resolveComposerCapacity({ ...input, keyboardShift: keyboardReserve }),
   };
 }
+
+/** Compact editing leaves conversation space above the complete composer. */
+export function resolveInlineComposerCapacity(
+  capacity: number | undefined,
+  compact: boolean,
+): number | undefined {
+  "worklet";
+  if (capacity === undefined) return undefined;
+  return compact ? capacity * 0.6 : capacity;
+}

packages/app/src/composer/draft/input-draft.ts

@@ -115,6 +115,7 @@ export function useAgentInputDraft(input: UseAgentInputDraftInput): AgentInputDr
   const isHydrated = hydratedDraftKey === draftKey;
   const textReplacementRevisionRef = useRef(0);
   const [textReplacement, setTextReplacement] = useState<TextReplacement>(() => ({
+    kind: "initial",
     key: `${draftKey}:0`,
     text: textSource.getSnapshot(),
   }));
@@ -123,6 +124,7 @@ export function useAgentInputDraft(input: UseAgentInputDraftInput): AgentInputDr
     (nextText: string) => {
       textReplacementRevisionRef.current += 1;
       setTextReplacement({
+        kind: "replace",
         key: `${draftKey}:${textReplacementRevisionRef.current}`,
         text: nextText,
       });

packages/app/src/composer/editing-session/index.test.ts

@@ -0,0 +1,52 @@
+import { describe, expect, it } from "vitest";
+import { ComposerEditingSession } from "./index";
+
+function leaveLiveDraft(session: ComposerEditingSession) {
+  session.captureForRemount({
+    snapshot: { text: "Unpublished live draft", selection: { start: 4, end: 17 } },
+    focused: true,
+    replacementKey: "draft:applied",
+  });
+}
+
+describe("composer editing remount handoff", () => {
+  it("keeps live text and selection when remounting from an initial draft publication", () => {
+    const session = new ComposerEditingSession();
+    leaveLiveDraft(session);
+    const handoff = session.takeHandoff({ kind: "initial", key: "draft:initial", text: "stale" });
+    expect(handoff?.snapshot).toEqual({
+      text: "Unpublished live draft",
+      selection: { start: 4, end: 17 },
+    });
+    expect(handoff?.focused).toBe(true);
+  });
+
+  it("keeps local edits when the last applied replacement is still current", () => {
+    const session = new ComposerEditingSession();
+    leaveLiveDraft(session);
+    const handoff = session.takeHandoff({
+      kind: "replace",
+      key: "draft:applied",
+      text: "old replacement",
+    });
+    expect(handoff?.snapshot).toEqual({
+      text: "Unpublished live draft",
+      selection: { start: 4, end: 17 },
+    });
+  });
+
+  it.each(["New explicit draft", ""])(
+    "honors an explicit replacement made while the editor is absent: %j",
+    (text) => {
+      const session = new ComposerEditingSession();
+      leaveLiveDraft(session);
+      const handoff = session.takeHandoff({ kind: "replace", key: "draft:new", text });
+      expect(handoff?.snapshot).toEqual({
+        text,
+        selection: { start: text.length, end: text.length },
+      });
+      expect(handoff?.focused).toBe(true);
+      expect(session.takeHandoff({ kind: "replace", key: "draft:new", text })).toBeNull();
+    },
+  );
+});

packages/app/src/composer/editing-session/index.tsx

@@ -0,0 +1,142 @@
+import React, {
+  createContext,
+  useContext,
+  useEffect,
+  useMemo,
+  useState,
+  useSyncExternalStore,
+  type ReactNode,
+} from "react";
+import type { TextReplacement } from "@/composer/types";
+import type { ComposerInputMode } from "@/composer/input-mode";
+
+export interface ComposerEditingHandoff {
+  snapshot: { text: string; selection: { start: number; end: number } };
+  focused: boolean;
+  replacementKey: string;
+}
+
+/** Editing metadata outlives a layout's input; draft text still belongs to its draft owner. */
+export class ComposerEditingSession {
+  private fullscreen = false;
+  private handoff: ComposerEditingHandoff | null = null;
+  private listeners = new Set<() => void>();
+  getFullscreen = () => this.fullscreen;
+  subscribe = (listener: () => void) => {
+    this.listeners.add(listener);
+    return () => {
+      this.listeners.delete(listener);
+    };
+  };
+  changePresentation(fullscreen: boolean, handoff: ComposerEditingHandoff) {
+    this.captureForRemount(handoff);
+    if (fullscreen === this.fullscreen) return;
+    this.fullscreen = fullscreen;
+    for (const listener of this.listeners) listener();
+  }
+  captureForRemount(handoff: ComposerEditingHandoff) {
+    this.handoff = handoff;
+  }
+  peekHandoff(replacement: TextReplacement): ComposerEditingHandoff | null {
+    const handoff = this.handoff;
+    if (!handoff || replacement.kind === "initial" || replacement.key === handoff.replacementKey)
+      return handoff;
+    // A replacement command issued since capture supersedes the old editor's live buffer.
+    return {
+      snapshot: {
+        text: replacement.text,
+        selection: { start: replacement.text.length, end: replacement.text.length },
+      },
+      focused: handoff.focused,
+      replacementKey: replacement.key,
+    };
+  }
+  takeHandoff(replacement: TextReplacement) {
+    const handoff = this.peekHandoff(replacement);
+    this.handoff = null;
+    return handoff;
+  }
+}
+
+class ComposerEditingSessions {
+  private workspaces = new Map<
+    string,
+    Map<string, { targetKey: string; sessions: Map<ComposerInputMode, ComposerEditingSession> }>
+  >();
+  get(workspaceKey: string, tabId: string, targetKey: string, purpose: ComposerInputMode) {
+    let workspace = this.workspaces.get(workspaceKey);
+    if (!workspace) {
+      workspace = new Map();
+      this.workspaces.set(workspaceKey, workspace);
+    }
+    let tab = workspace.get(tabId);
+    if (!tab || tab.targetKey !== targetKey) {
+      tab = { targetKey, sessions: new Map() };
+      workspace.set(tabId, tab);
+    }
+    let session = tab.sessions.get(purpose);
+    if (!session) {
+      session = new ComposerEditingSession();
+      tab.sessions.set(purpose, session);
+    }
+    return session;
+  }
+  retain(workspaceKey: string, tabIds: readonly string[]) {
+    const workspace = this.workspaces.get(workspaceKey);
+    if (!workspace) return;
+    const retained = new Set(tabIds);
+    for (const tabId of workspace.keys()) if (!retained.has(tabId)) workspace.delete(tabId);
+    if (workspace.size === 0) this.workspaces.delete(workspaceKey);
+  }
+}
+
+const SessionsContext = createContext<ComposerEditingSessions | null>(null);
+const WorkspaceContext = createContext<string | null>(null);
+const ScopeContext = createContext<{ tabId: string; targetKey: string } | null>(null);
+
+/** App-container ownership survives replacement of both the gesture shell and tab layout. */
+export function ComposerEditingSessionsProvider({ children }: { children: ReactNode }) {
+  const [sessions] = useState(() => new ComposerEditingSessions());
+  return <SessionsContext.Provider value={sessions}>{children}</SessionsContext.Provider>;
+}
+export function WorkspaceComposerEditingSessionsProvider({
+  workspaceKey,
+  tabIds,
+  children,
+}: {
+  workspaceKey: string;
+  tabIds: readonly string[];
+  children: ReactNode;
+}) {
+  const sessions = useContext(SessionsContext);
+  useEffect(() => sessions?.retain(workspaceKey, tabIds), [sessions, workspaceKey, tabIds]);
+  return <WorkspaceContext.Provider value={workspaceKey}>{children}</WorkspaceContext.Provider>;
+}
+export function ComposerEditingScope({
+  tabId,
+  targetKey,
+  children,
+}: {
+  tabId: string;
+  targetKey: string;
+  children: ReactNode;
+}) {
+  const scope = useMemo(() => ({ tabId, targetKey }), [tabId, targetKey]);
+  return <ScopeContext.Provider value={scope}>{children}</ScopeContext.Provider>;
+}
+export function useComposerEditingSession(
+  purpose: ComposerInputMode,
+  provided?: ComposerEditingSession,
+): ComposerEditingSession {
+  const sessions = useContext(SessionsContext);
+  const scope = useContext(ScopeContext);
+  const workspaceKey = useContext(WorkspaceContext);
+  const [local] = useState(() => provided ?? new ComposerEditingSession());
+  if (provided) return provided;
+  return sessions && scope && workspaceKey
+    ? sessions.get(workspaceKey, scope.tabId, scope.targetKey, purpose)
+    : local;
+}
+export function useComposerFullscreen(session: ComposerEditingSession): boolean {
+  return useSyncExternalStore(session.subscribe, session.getFullscreen, session.getFullscreen);
+}

packages/app/src/composer/index.tsx

@@ -1,3 +1,4 @@
+import { useComposerEditingSession, useComposerFullscreen } from "./editing-session";
 import type { ComposerTextSource } from "./text-source";
 import { createStore, type StoreApi } from "zustand/vanilla";
 import { useStore } from "zustand";
@@ -1003,8 +1004,10 @@ function ComposerAutocompleteBinding({
     cursorIndex: Math.min(cursorIndex, userInput.length),
     onAutocompleteApplied: () => inputRef.current?.focus(),
   });
-  useImperativeHandle(ref, () => ({ onKeyPress: autocomplete.onKeyPress }), [
-    autocomplete.onKeyPress,
+  const handleKeyPress = autocomplete.onKeyPress;
+  useImperativeHandle(ref, () => ({ onKeyPress: (event) => show && handleKeyPress(event) }), [
+    show,
+    handleKeyPress,
   ]);
   const selectOption = autocomplete.onSelectOption;
   const onSelect = useCallback(
@@ -1336,6 +1339,8 @@ function ComposerContentImpl({
   const nextPendingFileId = useRef(0);
   const isUploadingFile = pendingFiles.length > 0;
   const [pendingNativeImagePastes, setPendingNativeImagePastes] = useState(0);
+  const editingSession = useComposerEditingSession(inputMode);
+  const isFullscreen = useComposerFullscreen(editingSession);
   const [sendError, setSendError] = useState<string | null>(null);
   const [isMessageInputFocused, setIsMessageInputFocused] = useState(false);
   const [isGithubPickerOpen, setIsGithubPickerOpen] = useState(false);
@@ -2364,7 +2369,7 @@ function ComposerContentImpl({
         <View style={inputAreaContainerStyle}>
           <View style={styles.inputAreaContent}>
             {queueList}
-            {sendErrorNode}
+            {!isFullscreen && sendErrorNode}
 
             <View ref={messageInputContainerRef} style={styles.messageInputContainer}>
               <ComposerAutocompleteBinding
@@ -2372,7 +2377,7 @@ function ComposerContentImpl({
                 cursor={cursor}
                 inputRef={messageInputRef}
                 anchorRef={messageInputContainerRef}
-                show={mode.showAutocomplete}
+                show={mode.showAutocomplete && !isFullscreen}
                 ref={autocompleteRef}
                 configuration={autocompleteConfiguration}
               />
@@ -2387,6 +2392,8 @@ function ComposerContentImpl({
               <RenderProfile id="MessageInput">
                 <StableMessageInput
                   ref={messageInputRef}
+                  editingSession={editingSession}
+                  submissionError={sendErrorNode}
                   value={textSource.getSnapshot()}
                   onChangeText={setUserInput}
                   onSubmit={handleSubmit}

packages/app/src/composer/input/fullscreen-host.native.tsx

@@ -0,0 +1,57 @@
+import { useEffect, type ReactNode } from "react";
+import { Portal } from "@gorhom/portal";
+import { BackHandler, View, useWindowDimensions } from "react-native";
+import { useSafeAreaInsets } from "react-native-safe-area-context";
+import { StyleSheet } from "react-native-unistyles";
+import Animated, { useAnimatedStyle } from "react-native-reanimated";
+import { DEFAULT_FLOATING_PANEL_PORTAL_HOST } from "@/components/ui/floating-panel-portal";
+import { useKeyboardShift } from "@/keyboard/shift";
+
+/** Same-window host keeps the IME attached while escaping the dock's clipping. */
+export function ComposerFullscreenHost({
+  children,
+  onExit,
+  active,
+}: {
+  children: ReactNode;
+  onExit: () => void;
+  active: boolean;
+}) {
+  useEffect(() => {
+    if (!active) return;
+    const handler = BackHandler.addEventListener("hardwareBackPress", () => {
+      onExit();
+      return true;
+    });
+    return () => handler.remove();
+  }, [active, onExit]);
+  const insets = useSafeAreaInsets();
+  const { height } = useWindowDimensions();
+  const { layoutShift } = useKeyboardShift();
+  const frame = useAnimatedStyle(() => ({
+    height: Math.max(0, height - layoutShift.value),
+    paddingTop: insets.top,
+    paddingBottom: insets.bottom,
+    paddingLeft: insets.left,
+    paddingRight: insets.right,
+  }));
+  return (
+    <Portal hostName={DEFAULT_FLOATING_PANEL_PORTAL_HOST}>
+      <View style={[styles.background, !active && styles.hidden]}>
+        <Animated.View style={[{ width: "100%" }, frame]}>{children}</Animated.View>
+      </View>
+    </Portal>
+  );
+}
+
+const styles = StyleSheet.create((theme) => ({
+  hidden: { display: "none" },
+  background: {
+    position: "absolute",
+    top: 0,
+    bottom: 0,
+    left: 0,
+    right: 0,
+    backgroundColor: theme.colors.surface1,
+  },
+}));

packages/app/src/composer/input/fullscreen-host.tsx

@@ -0,0 +1,77 @@
+import { useMemo, useLayoutEffect, useState, type ReactNode } from "react";
+import { createPortal } from "react-dom";
+import { View } from "react-native";
+import {
+  getOverlayRoot,
+  useOverlayLayer,
+  OverlayLayerProvider,
+  useWebOverlayRegistration,
+} from "@/lib/overlay-root";
+
+export function ComposerFullscreenHost({
+  children,
+  onExit,
+  active,
+}: {
+  children: ReactNode;
+  onExit: () => void;
+  active: boolean;
+}) {
+  const layer = useOverlayLayer("modal");
+  const registration = useWebOverlayRegistration({
+    active,
+    layer,
+    onKeyDown: (event) => {
+      if (event.key !== "Escape") return false;
+      event.preventDefault();
+      onExit();
+      return true;
+    },
+  });
+  const [viewport, setViewport] = useState(readVisibleViewport);
+  useLayoutEffect(() => {
+    if (!active) return;
+    const update = () => setViewport(readVisibleViewport());
+    const visualViewport = window.visualViewport;
+    update();
+    visualViewport?.addEventListener("resize", update);
+    visualViewport?.addEventListener("scroll", update);
+    window.addEventListener("resize", update);
+    return () => {
+      visualViewport?.removeEventListener("resize", update);
+      visualViewport?.removeEventListener("scroll", update);
+      window.removeEventListener("resize", update);
+    };
+  }, [active]);
+  const frameStyle = useMemo(
+    () => ({
+      display: active ? ("flex" as const) : ("none" as const),
+      position: "absolute" as const,
+      top: viewport.top,
+      left: viewport.left,
+      width: viewport.width,
+      zIndex: layer,
+      pointerEvents: "auto" as const,
+      height: viewport.height,
+    }),
+    [active, layer, viewport],
+  );
+  return createPortal(
+    <OverlayLayerProvider layer={layer}>
+      <View ref={registration} style={frameStyle}>
+        {children}
+      </View>
+    </OverlayLayerProvider>,
+    getOverlayRoot(),
+  );
+}
+
+function readVisibleViewport() {
+  const viewport = window.visualViewport;
+  return {
+    top: viewport?.offsetTop ?? 0,
+    left: viewport?.offsetLeft ?? 0,
+    width: viewport?.width ?? window.innerWidth,
+    height: viewport?.height ?? window.innerHeight,
+  };
+}

packages/app/src/composer/input/height.native.ts

@@ -7,6 +7,8 @@ interface ComposerHeightArgs {
   textareaRef: RefObject<unknown>;
   minHeight: number;
   maxHeight: number;
+  onRenderedLinesChange?: (lines: number) => void;
+  presentationKey?: boolean;
 }
 
 export function useComposerHeight({

packages/app/src/composer/input/height.web.ts

@@ -7,6 +7,8 @@ interface ComposerHeightArgs {
   textareaRef: RefObject<HTMLElement | null>;
   minHeight: number;
   maxHeight: number;
+  onRenderedLinesChange?: (lines: number) => void;
+  presentationKey?: boolean;
 }
 
 const COPIED_STYLES = [
@@ -36,11 +38,13 @@ export function useComposerHeight({
   textareaRef,
   minHeight,
   maxHeight,
+  onRenderedLinesChange,
+  presentationKey,
 }: ComposerHeightArgs): ComposerHeightResult {
   const [height, setHeight] = useState(minHeight);
   const heightRef = useRef(minHeight);
-  const paramsRef = useRef({ getText, minHeight, maxHeight });
-  paramsRef.current = { getText, minHeight, maxHeight };
+  const paramsRef = useRef({ getText, minHeight, maxHeight, onRenderedLinesChange });
+  paramsRef.current = { getText, minHeight, maxHeight, onRenderedLinesChange };
   const mirrorRef = useRef<HTMLTextAreaElement | null>(null);
 
   const setBoundedHeight = useCallback((nextHeight: number) => {
@@ -65,6 +69,13 @@ export function useComposerHeight({
       }
       mirror.style.width = `${sourceWidth}px`;
       mirror.value = text.endsWith("\n") ? `${text} ` : text;
+      const padding =
+        parseFloat(computedStyle.paddingTop) + parseFloat(computedStyle.paddingBottom);
+      const lineHeight = parseFloat(computedStyle.lineHeight);
+      if (lineHeight > 0)
+        paramsRef.current.onRenderedLinesChange?.(
+          Math.round((mirror.scrollHeight - padding) / lineHeight),
+        );
       setBoundedHeight(mirror.scrollHeight);
     },
     [setBoundedHeight, textareaRef],
@@ -101,7 +112,7 @@ export function useComposerHeight({
 
   useLayoutEffect(() => {
     measure(getText());
-  }, [maxHeight, minHeight, getText, measure]);
+  }, [maxHeight, minHeight, getText, measure, presentationKey]);
 
   useEffect(() => {
     const source = textareaRef.current;
@@ -115,7 +126,7 @@ export function useComposerHeight({
     });
     observer.observe(source);
     return () => observer.disconnect();
-  }, [measure, textareaRef]);
+  }, [measure, textareaRef, presentationKey]);
 
   const onTextChange = useCallback(
     (_previousText: string, nextText: string) => measure(nextText),

packages/app/src/composer/input/input.tsx

@@ -1,3 +1,8 @@
+import {
+  useComposerEditingSession,
+  useComposerFullscreen,
+  type ComposerEditingSession,
+} from "@/composer/editing-session";
 import { LoadingSpinner } from "@/components/ui/loading-spinner";
 import {
   View,
@@ -56,6 +61,7 @@ import { useIsCompactFormFactor } from "@/constants/layout";
 import { useComposerKeyboardScope } from "@/composer/keyboard-scope";
 import { RenderProfile } from "@/utils/render-profiler";
 import { useComposerHeight } from "./height";
+import { ComposerInputPresentation } from "./presentation";
 import { resolveComposerInputMode, type ComposerInputMode } from "@/composer/input-mode";
 import type { NativePastedFile } from "@/composer/native-pasted-image";
 import {
@@ -77,6 +83,7 @@ import {
   applyDictationTranscript,
   computeCanStartDictation,
   resolveComposerSurfacePresentation,
+  resolveComposerSurfaceText,
   runAlternateSendAction,
   runDefaultSendAction,
   runMessageInputKeyboardAction,
@@ -106,6 +113,8 @@ export interface ComposerKeyPressEvent {
 }
 
 export interface MessageInputProps {
+  editingSession?: ComposerEditingSession;
+  submissionError?: React.ReactNode;
   value: string;
   onChangeText: (text: string) => void;
   onSubmit: (payload: MessagePayload) => void;
@@ -206,6 +215,7 @@ type WebTextInputKeyPressEvent = NativeSyntheticEvent<
 >;
 
 interface TextAreaHandle {
+  value?: string;
   scrollHeight?: number;
   clientHeight?: number;
   offsetHeight?: number;
@@ -215,7 +225,7 @@ interface TextAreaHandle {
   style?: {
     height?: string;
     overflowY?: string;
-  } & Record<string, unknown>;
+  };
 }
 
 function AttachButtonIcon({
@@ -433,7 +443,7 @@ function getTextInputNativeElement(current: ComposerTextInputHandle | null): HTM
 }
 
 interface PasteImagesEffectArgs {
-  getWebTextArea: () => TextAreaHandle | null;
+  textarea: HTMLElement | null;
   isConnected: boolean;
   disabled: boolean;
   isDictating: boolean;
@@ -443,7 +453,7 @@ interface PasteImagesEffectArgs {
 
 function usePasteImagesEffect(args: PasteImagesEffectArgs): void {
   const {
-    getWebTextArea,
+    textarea,
     isConnected,
     disabled,
     isDictating,
@@ -454,19 +464,7 @@ function usePasteImagesEffect(args: PasteImagesEffectArgs): void {
   useEffect(() => {
     if (!isWeb || !onAddImages) return;
 
-    const textarea = getWebTextArea() as
-      | (TextAreaHandle & {
-          addEventListener?: (type: string, listener: (e: ClipboardEvent) => void) => void;
-          removeEventListener?: (type: string, listener: (e: ClipboardEvent) => void) => void;
-        })
-      | null;
-    if (
-      !textarea ||
-      typeof textarea.addEventListener !== "function" ||
-      typeof textarea.removeEventListener !== "function"
-    ) {
-      return;
-    }
+    if (!textarea) return;
 
     let disposed = false;
     const handlePaste = (event: ClipboardEvent) => {
@@ -493,14 +491,7 @@ function usePasteImagesEffect(args: PasteImagesEffectArgs): void {
       disposed = true;
       textarea.removeEventListener?.("paste", handlePaste);
     };
-  }, [
-    disabled,
-    getWebTextArea,
-    isConnected,
-    isDictating,
-    isRealtimeVoiceForCurrentAgent,
-    onAddImages,
-  ]);
+  }, [disabled, textarea, isConnected, isDictating, isRealtimeVoiceForCurrentAgent, onAddImages]);
 }
 
 function useAutoFocusOnWebEffect(
@@ -628,6 +619,7 @@ function FocusHint({
 interface ComposerTextSurfaceProps {
   readOnly: boolean;
   value: string;
+  textReplacementKey: string;
   textInputRef: React.Ref<ComposerTextInputHandle>;
   textInputStyle: EditingTextInputProps["style"];
   readOnlyTextStyle: React.ComponentProps<typeof Text>["style"];
@@ -643,6 +635,9 @@ interface ComposerTextSurfaceProps {
   onSelectionChange: (event: NativeSyntheticEvent<TextInputSelectionChangeEventData>) => void;
   onPasteImages: ((files: readonly NativePastedFile[]) => void) | undefined;
   onPasteError: (message: string) => void;
+  fullscreen: boolean;
+  compact: boolean;
+  onRenderedLinesChange: (lines: number) => void;
   focusHintVisible: boolean;
   focusInputKeys: ShortcutChord | null | undefined;
   focusHintLabel: string;
@@ -654,6 +649,23 @@ interface ComposerTextSurfaceProps {
  * state of this composer rather than a second one.
  */
 function ComposerTextSurface(props: ComposerTextSurfaceProps): React.ReactElement {
+  const { onChangeText, onRenderedLinesChange } = props;
+  const [measurementText, setMeasurementText] = useState(props.value);
+  useEffect(() => {
+    if (!isWeb) setMeasurementText(props.value);
+  }, [props.value, props.textReplacementKey]);
+  const handleTextChange = useCallback(
+    (text: string) => {
+      if (!isWeb) setMeasurementText(text);
+      onChangeText(text);
+    },
+    [onChangeText, setMeasurementText],
+  );
+  const measureLines = useCallback(
+    (event: import("react-native").TextLayoutEvent) =>
+      onRenderedLinesChange(event.nativeEvent.lines.length),
+    [onRenderedLinesChange],
+  );
   if (props.readOnly) {
     return (
       <View style={styles.textInputScrollWrapper}>
@@ -664,12 +676,28 @@ function ComposerTextSurface(props: ComposerTextSurfaceProps): React.ReactElemen
     );
   }
   return (
-    <View style={styles.textInputScrollWrapper}>
+    <View
+      style={[
+        styles.textInputScrollWrapper,
+        props.fullscreen && styles.fullscreenTextSurface,
+        props.compact && !props.fullscreen && styles.compactTextSurface,
+      ]}
+    >
+      {!isWeb && props.compact && !props.fullscreen ? (
+        <Text
+          accessible={false}
+          pointerEvents="none"
+          style={[props.textInputStyle, styles.lineMeasurement]}
+          onTextLayout={measureLines}
+        >
+          {`${measurementText}\u200b`}
+        </Text>
+      ) : null}
       <ComposerTextInput
         ref={props.textInputRef}
         dataSet={COMPOSER_INPUT_DATASET}
         initialValue={props.value}
-        onChangeText={props.onChangeText}
+        onChangeText={handleTextChange}
         placeholder={props.placeholder}
         accessibilityLabel={props.accessibilityLabel}
         onFocus={props.onFocus}
@@ -843,6 +871,7 @@ interface ToggleRealtimeVoiceContext {
   handleStopRealtimeVoice: () => Promise<unknown> | void;
   toast: { error: (msg: string) => void };
   interruptBeforeVoiceMessage: string;
+  exitFullscreen: () => void;
 }
 
 function toggleRealtimeVoiceImpl(ctx: ToggleRealtimeVoiceContext): void {
@@ -858,6 +887,7 @@ function toggleRealtimeVoiceImpl(ctx: ToggleRealtimeVoiceContext): void {
     ctx.toast.error(ctx.interruptBeforeVoiceMessage);
     return;
   }
+  ctx.exitFullscreen();
   void ctx.voice.startVoice(ctx.voiceServerId, ctx.voiceAgentId).catch((error) => {
     console.error("[MessageInput] Failed to start realtime voice", error);
     const message = extractErrorMessage(error);
@@ -872,6 +902,7 @@ interface StartDictationContext {
   canStartDictation: () => boolean;
   toast: { error: (msg: string) => void };
   startDictation: () => Promise<void>;
+  exitFullscreen: () => void;
 }
 
 async function startDictationIfAvailableImpl(ctx: StartDictationContext): Promise<void> {
@@ -882,6 +913,7 @@ async function startDictationIfAvailableImpl(ctx: StartDictationContext): Promis
   if (!ctx.canStartDictation()) {
     return;
   }
+  ctx.exitFullscreen();
   await ctx.startDictation();
 }
 
@@ -983,7 +1015,8 @@ function computeIsDictationStartEnabled(
   return (isReadyForDictation ?? isConnected) && !disabled;
 }
 
-function resolveMaxInputHeight(windowHeight: number): number {
+function resolveMaxInputHeight(windowHeight: number, compact: boolean): number {
+  if (compact) return DEFAULT_MAX_INPUT_HEIGHT;
   if (!Number.isFinite(windowHeight) || windowHeight <= 0) return DEFAULT_MAX_INPUT_HEIGHT;
   return Math.max(DEFAULT_MAX_INPUT_HEIGHT, Math.floor(windowHeight * MAX_INPUT_VIEWPORT_RATIO));
 }
@@ -1007,9 +1040,12 @@ function getComposerInputSnapshot(
   current: ComposerTextInputHandle | null,
   fallbackText: string,
   fallbackSelection: ComposerInputSnapshot["selection"],
+  mountedTextArea?: TextAreaHandle | null,
 ): ComposerInputSnapshot {
-  const text = current?.getText() ?? fallbackText;
-  const textArea = getWebTextAreaImpl(current);
+  // The inner DOM ref can detach before the outer editing handle. Keep the mounted
+  // element available until this owner's ref callback captures the remount handoff.
+  const textArea = mountedTextArea ?? getWebTextAreaImpl(current);
+  const text = textArea?.value ?? current?.getText() ?? fallbackText;
   const start = textArea?.selectionStart ?? fallbackSelection.start;
   const end = textArea?.selectionEnd ?? fallbackSelection.end;
   return { text, selection: { start, end } };
@@ -1139,6 +1175,28 @@ function extractErrorMessage(error: unknown): string | null {
   return null;
 }
 
+function resolvePresentationSendDisabled(input: {
+  fullscreen: boolean;
+  disabled: boolean;
+  hasText: boolean;
+  attachments: ComposerAttachment[];
+  hasExternalContent: boolean;
+  allowEmpty: boolean;
+}): boolean {
+  return (
+    input.disabled || (input.fullscreen && !input.allowEmpty && !hasSendableComposerContent(input))
+  );
+}
+
+function shouldShowFullscreenControl(
+  compact: boolean,
+  readOnly: boolean,
+  overlayVisible: boolean,
+  renderedLines: number,
+) {
+  return compact && !readOnly && !overlayVisible && renderedLines > 2;
+}
+
 export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
   function MessageInput(props, ref) {
     const {
@@ -1186,11 +1244,15 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
       textReplacement,
       submitLabel,
     } = resolveMessageInputProps(props);
+    const { isActiveComposer } = useComposerKeyboardScope();
     const mode = resolveComposerInputMode(inputMode);
     const { t } = useTranslation();
     const isCompact = useIsCompactFormFactor();
     const { height: windowHeight } = useWindowDimensions();
-    const maxInputHeight = resolveMaxInputHeight(windowHeight);
+    const editingSession = useComposerEditingSession(inputMode, props.editingSession);
+    const isFullscreen = useComposerFullscreen(editingSession);
+    const [renderedLines, setRenderedLines] = useState(1);
+    const maxInputHeight = resolveMaxInputHeight(windowHeight, isCompact);
     const buttonIconSize = isWeb ? ICON_SIZE.md : ICON_SIZE.lg;
     const toast = useToast();
     const voice = useVoiceOptional();
@@ -1207,27 +1269,19 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
     const inputWrapperRef = useRef<View | null>(null);
     const textInputRef = useRef<ComposerTextInputHandle | null>(null);
     const isInputFocusedRef = useRef(false);
-    const valueRef = useRef(value);
-    const selectionRef = useRef({ start: value.length, end: value.length });
-    const appliedTextReplacementKeyRef = useRef(textReplacement.key);
-    const webTextareaRef = useRef<HTMLElement | null>(null);
-    const getLiveText = useCallback(() => valueRef.current, []);
-    const composerHeight = useComposerHeight({
-      getText: getLiveText,
-      textareaRef: webTextareaRef,
-      minHeight: MIN_INPUT_HEIGHT,
-      maxHeight: maxInputHeight,
-    });
-    const { style: composerHeightStyle, scrollEnabled: isComposerScrollEnabled } = composerHeight;
-    const measuredComposerHeight = composerHeight.mode === "measured" ? composerHeight : undefined;
-    const updateComposerHeightForText = measuredComposerHeight?.onTextChange;
-    const resetComposerHeight = measuredComposerHeight?.reset;
-
-    const handleComposerLayout = useCallback(
-      (event: LayoutChangeEvent) => onHeightChange?.(event.nativeEvent.layout.height),
-      [onHeightChange],
+    const handoff = editingSession.peekHandoff(textReplacement);
+    const focusIntentRef = useRef(Boolean(handoff?.focused));
+    const valueRef = useRef(handoff?.snapshot.text ?? value);
+    const selectionRef = useRef(
+      handoff?.snapshot.selection ?? { start: value.length, end: value.length },
     );
-
+    const activeComposerRef = useRef(isActiveComposer);
+    activeComposerRef.current = isActiveComposer;
+    const [webTextArea, setWebTextArea] = useState<HTMLElement | null>(null);
+    const appliedTextReplacementKeyRef = useRef(textReplacement.key);
+    const textReplacementRef = useRef(textReplacement);
+    textReplacementRef.current = textReplacement;
+    const webTextareaRef = useRef<HTMLElement | null>(null);
     const updateLiveTextPresence = useCallback((text: string) => {
       const nextHasLiveText = text.trim().length > 0;
       if (hasLiveTextRef.current === nextHasLiveText) return;
@@ -1235,6 +1289,82 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
       setHasLiveText(nextHasLiveText);
     }, []);
 
+    const assignTextInput = useCallback(
+      (input: ComposerTextInputHandle | null) => {
+        const previous = textInputRef.current;
+        if (!input && previous) {
+          editingSession.captureForRemount({
+            snapshot: getComposerInputSnapshot(
+              previous,
+              valueRef.current,
+              selectionRef.current,
+              webTextareaRef.current,
+            ),
+            focused: previous.isFocused() || isInputFocusedRef.current,
+            replacementKey: appliedTextReplacementKeyRef.current,
+          });
+        }
+        textInputRef.current = input;
+        if (isWeb) {
+          const element = getWebTextAreaImpl(input) as HTMLElement | null;
+          webTextareaRef.current = element;
+          setWebTextArea(element);
+        }
+        if (!input) return;
+        const transfer = editingSession.takeHandoff(textReplacementRef.current);
+        if (transfer) {
+          appliedTextReplacementKeyRef.current = textReplacementRef.current.key;
+          valueRef.current = transfer.snapshot.text;
+          updateLiveTextPresence(transfer.snapshot.text);
+          selectionRef.current = transfer.snapshot.selection;
+          input.replaceText(transfer.snapshot.text, transfer.snapshot.selection);
+          if (transfer.focused && activeComposerRef.current) input.focus();
+        }
+      },
+      [editingSession, updateLiveTextPresence],
+    );
+    useLayoutEffect(() => {
+      if (isActiveComposer && focusIntentRef.current) textInputRef.current?.focus();
+    }, [isActiveComposer]);
+    const getLiveText = useCallback(() => valueRef.current, []);
+    const composerHeight = useComposerHeight({
+      getText: getLiveText,
+      textareaRef: webTextareaRef,
+      minHeight: MIN_INPUT_HEIGHT,
+      maxHeight: maxInputHeight,
+      onRenderedLinesChange: setRenderedLines,
+      presentationKey: isFullscreen,
+    });
+    const { style: composerHeightStyle, scrollEnabled: isComposerScrollEnabled } = composerHeight;
+    const measuredComposerHeight = composerHeight.mode === "measured" ? composerHeight : undefined;
+    const updateComposerHeightForText = measuredComposerHeight?.onTextChange;
+    const resetComposerHeight = measuredComposerHeight?.reset;
+
+    const changePresentation = useCallback(
+      (fullscreen: boolean) => {
+        if (editingSession.getFullscreen() === fullscreen) return;
+        const snapshot = getComposerInputSnapshot(
+          textInputRef.current,
+          valueRef.current,
+          selectionRef.current,
+        );
+        editingSession.changePresentation(fullscreen, {
+          snapshot,
+          focused: textInputRef.current?.isFocused() ?? isInputFocusedRef.current,
+          replacementKey: appliedTextReplacementKeyRef.current,
+        });
+        valueRef.current = snapshot.text;
+        selectionRef.current = snapshot.selection;
+      },
+      [editingSession],
+    );
+    const exitFullscreen = useCallback(() => changePresentation(false), [changePresentation]);
+
+    const handleComposerLayout = useCallback(
+      (event: LayoutChangeEvent) => onHeightChange?.(event.nativeEvent.layout.height),
+      [onHeightChange],
+    );
+
     const replaceText = useCallback(
       (nextText: string, selection?: { start: number; end: number }) => {
         updateComposerHeightForText?.(valueRef.current, nextText);
@@ -1412,8 +1542,9 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
           canStartDictation,
           toast,
           startDictation,
+          exitFullscreen,
         }),
-      [canStartDictation, dictationUnavailableMessage, startDictation, toast],
+      [canStartDictation, dictationUnavailableMessage, startDictation, toast, exitFullscreen],
     );
 
     const handleVoicePress = useCallback(
@@ -1485,10 +1616,12 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
         handleStopRealtimeVoice,
         toast,
         interruptBeforeVoiceMessage: t("composer.voice.interruptBeforeVoice"),
+        exitFullscreen,
       });
     }, [
       disabled,
       handleStopRealtimeVoice,
+      exitFullscreen,
       isAgentRunning,
       isConnected,
       t,
@@ -1572,10 +1705,10 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
       if (isWeb) {
         webTextareaRef.current = getWebTextArea() as HTMLElement | null;
       }
-    }, [getWebTextArea]);
+    }, [getWebTextArea, isFullscreen]);
 
     usePasteImagesEffect({
-      getWebTextArea,
+      textarea: webTextArea,
       isConnected,
       disabled,
       isDictating,
@@ -1596,16 +1729,30 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
     const shouldHandleWebKeyPress = isWeb;
     const shouldSubmitOnEnter = isWeb && !isCompact;
 
-    function handleDesktopKeyPress(event: WebTextInputKeyPressEvent) {
-      if (!shouldHandleWebKeyPress) return;
-      handleDesktopKeyPressImpl(event, {
+    const handleDesktopKeyPress = useCallback(
+      (event: WebTextInputKeyPressEvent) => {
+        if (!shouldHandleWebKeyPress) return;
+        handleDesktopKeyPressImpl(event, {
+          onKeyPressCallback,
+          input: getComposerInputSnapshot(
+            textInputRef.current,
+            valueRef.current,
+            selectionRef.current,
+          ),
+          submitOnEnter: shouldSubmitOnEnter,
+          isAgentRunning,
+          onQueue,
+          isSubmitDisabled,
+          isSubmitLoading,
+          disabled,
+          handleAlternateSendAction,
+          handleDefaultSendAction,
+        });
+      },
+      [
+        shouldHandleWebKeyPress,
         onKeyPressCallback,
-        input: getComposerInputSnapshot(
-          textInputRef.current,
-          valueRef.current,
-          selectionRef.current,
-        ),
-        submitOnEnter: shouldSubmitOnEnter,
+        shouldSubmitOnEnter,
         isAgentRunning,
         onQueue,
         isSubmitDisabled,
@@ -1613,8 +1760,8 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
         disabled,
         handleAlternateSendAction,
         handleDefaultSendAction,
-      });
-    }
+      ],
+    );
 
     const primaryActionKind = resolvePrimaryActionKind({
       hasSendableContent: hasSendableComposerContent({
@@ -1678,16 +1825,18 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
     );
 
     const handleInputFocus = useCallback(() => {
+      focusIntentRef.current = true;
       isInputFocusedRef.current = true;
       setIsInputFocused(true);
       onFocusChange?.(true);
     }, [onFocusChange]);
 
     const handleInputBlur = useCallback(() => {
+      if (activeComposerRef.current && !isFullscreen) focusIntentRef.current = false;
       isInputFocusedRef.current = false;
       setIsInputFocused(false);
       onFocusChange?.(false);
-    }, [onFocusChange]);
+    }, [isFullscreen, onFocusChange]);
 
     const handlePasteError = useCallback(
       (message: string) => {
@@ -1735,8 +1884,12 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
     // `fontFamily` here is silently dropped while every other property lands.
     // An inline style outranks both classes. See docs/unistyles.md.
     const textInputStyle = useMemo(
-      () => [styles.textInput, mode.isMonospace && styles.textInputMonospace, composerHeightStyle],
-      [composerHeightStyle, mode.isMonospace],
+      () => [
+        styles.textInput,
+        mode.isMonospace && styles.textInputMonospace,
+        isFullscreen ? styles.fullscreenTextInput : composerHeightStyle,
+      ],
+      [composerHeightStyle, mode.isMonospace, isFullscreen],
     );
     // Static content has no textarea to mirror, so it grows with its own text
     // instead of the measured input height.
@@ -1780,107 +1933,192 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
       [isDictating, isRealtimeVoiceForCurrentAgent, voice?.isMuted, buttonIconSize],
     );
 
-    return (
-      <View
-        ref={rootRef}
-        style={styles.container}
-        testID="message-input-root"
-        onLayout={handleComposerLayout}
-      >
-        <MessageInputAutoFocus
-          enabled={autoFocus}
-          autoFocusKey={autoFocusKey}
-          textInputRef={textInputRef}
+    const sendButton = useMemo(
+      () => (
+        <PrimaryAction
+          kind={isFullscreen ? "send" : primaryActionKind}
+          activeActionContent={activeActionContent}
+          shouldShow
+          canPressLoadingButton={canPressLoadingButton}
+          onSubmitLoadingPress={onSubmitLoadingPress}
+          onDefaultSendAction={handleDefaultSendAction}
+          isSendButtonDisabled={resolvePresentationSendDisabled({
+            fullscreen: isFullscreen,
+            disabled: isSendButtonDisabled,
+            hasText: hasLiveText,
+            attachments,
+            hasExternalContent,
+            allowEmpty: allowEmptySubmit,
+          })}
+          submitAccessibilityLabel={submitAccessibilityLabel}
+          sendButtonCombinedStyle={sendButtonCombinedStyle}
+          isSubmitLoading={isSubmitLoading}
+          submitIcon={submitIcon}
+          submitLabel={submitLabel}
+          submitButtonTestID={submitButtonTestID}
+          buttonIconSize={buttonIconSize}
+          sendKeys={DEFAULT_SEND_KEYS}
+          sendTooltipLabel={sendTooltipLabel}
         />
-        {/* Regular input */}
-        <View
-          ref={inputWrapperRef}
-          style={inputWrapperCombinedStyle}
-          pointerEvents={surfacePresentation.input.pointerEvents}
-        >
-          {attachmentSlot}
-          {/* Text input */}
-          <RenderProfile id="ComposerTextSurface">
-            <ComposerTextSurface
-              readOnly={readOnly}
-              value={value}
-              textInputRef={textInputRef}
-              textInputStyle={textInputStyle}
-              readOnlyTextStyle={readOnlyTextStyle}
-              placeholder={placeholder ?? t("composer.placeholders.fallback")}
-              accessibilityLabel={t(mode.accessibilityLabelKey)}
-              onChangeText={handleInputChange}
-              onFocus={handleInputFocus}
-              onBlur={handleInputBlur}
-              editable={!isDictating && !isRealtimeVoiceForCurrentAgent && !disabled}
-              scrollEnabled={isComposerScrollEnabled}
-              autoFocus={false}
-              onKeyPress={shouldHandleWebKeyPress ? handleDesktopKeyPress : undefined}
-              onSelectionChange={handleSelectionChange}
-              onPasteImages={onPasteImages}
-              onPasteError={handlePasteError}
-              focusHintVisible={isWeb && !isInputFocused && !value}
-              focusInputKeys={focusInputKeys}
-              focusHintLabel={t("composer.input.focusHint", {
-                shortcut: focusInputKeys ? formatShortcut(focusInputKeys[0], getShortcutOs()) : "",
-              })}
+      ),
+      [
+        isFullscreen,
+        primaryActionKind,
+        activeActionContent,
+        canPressLoadingButton,
+        onSubmitLoadingPress,
+        handleDefaultSendAction,
+        isSendButtonDisabled,
+        hasLiveText,
+        attachments,
+        hasExternalContent,
+        allowEmptySubmit,
+        submitAccessibilityLabel,
+        sendButtonCombinedStyle,
+        isSubmitLoading,
+        submitIcon,
+        submitLabel,
+        submitButtonTestID,
+        buttonIconSize,
+        sendTooltipLabel,
+      ],
+    );
+    const textSurface = useMemo(
+      () => (
+        <RenderProfile id="ComposerTextSurface">
+          <ComposerTextSurface
+            readOnly={readOnly}
+            value={
+              readOnly
+                ? value
+                : resolveComposerSurfaceText(
+                    valueRef.current,
+                    textReplacement,
+                    appliedTextReplacementKeyRef.current,
+                  )
+            }
+            textReplacementKey={textReplacement.key}
+            textInputRef={assignTextInput}
+            textInputStyle={textInputStyle}
+            readOnlyTextStyle={readOnlyTextStyle}
+            placeholder={placeholder ?? t("composer.placeholders.fallback")}
+            accessibilityLabel={t(mode.accessibilityLabelKey)}
+            onChangeText={handleInputChange}
+            onFocus={handleInputFocus}
+            onBlur={handleInputBlur}
+            editable={!isDictating && !isRealtimeVoiceForCurrentAgent && !disabled}
+            scrollEnabled={isComposerScrollEnabled}
+            autoFocus={
+              Boolean(editingSession.peekHandoff(textReplacement)?.focused) && isActiveComposer
+            }
+            onKeyPress={shouldHandleWebKeyPress ? handleDesktopKeyPress : undefined}
+            onSelectionChange={handleSelectionChange}
+            onPasteImages={onPasteImages}
+            onPasteError={handlePasteError}
+            fullscreen={isFullscreen}
+            compact={isCompact}
+            onRenderedLinesChange={setRenderedLines}
+            focusHintVisible={!isFullscreen && isWeb && !isInputFocused && !value}
+            focusInputKeys={focusInputKeys}
+            focusHintLabel={t("composer.input.focusHint", {
+              shortcut: focusInputKeys ? formatShortcut(focusInputKeys[0], getShortcutOs()) : "",
+            })}
+          />
+        </RenderProfile>
+      ),
+      [
+        readOnly,
+        textReplacement,
+        editingSession,
+        isActiveComposer,
+        assignTextInput,
+        textInputStyle,
+        readOnlyTextStyle,
+        placeholder,
+        t,
+        mode.accessibilityLabelKey,
+        handleInputChange,
+        handleInputFocus,
+        handleInputBlur,
+        isDictating,
+        isRealtimeVoiceForCurrentAgent,
+        disabled,
+        isComposerScrollEnabled,
+        shouldHandleWebKeyPress,
+        handleDesktopKeyPress,
+        handleSelectionChange,
+        onPasteImages,
+        handlePasteError,
+        isFullscreen,
+        isCompact,
+        isInputFocused,
+        value,
+        focusInputKeys,
+      ],
+    );
+    const toolbar = useMemo(
+      () => (
+        <View style={styles.buttonRow}>
+          {/* Toolbar left: attachment button + agent controls */}
+          <View style={styles.leftButtonGroup}>
+            <AttachmentDropdown
+              visible={mode.showAttachments}
+              isConnected={isConnected}
+              disabled={disabled}
+              attachButtonStyle={attachButtonStyle}
+              renderAttachButtonIcon={renderAttachButtonIcon}
+              attachmentMenuItems={attachmentMenuItems}
+              addAttachmentLabel={t("composer.input.addAttachment")}
             />
-          </RenderProfile>
+            {leftContent}
+          </View>
 
-          {/* Button row */}
-          <View style={styles.buttonRow}>
-            {/* Toolbar left: attachment button + agent controls */}
-            <View style={styles.leftButtonGroup}>
-              <AttachmentDropdown
-                visible={mode.showAttachments}
-                isConnected={isConnected}
-                disabled={disabled}
-                attachButtonStyle={attachButtonStyle}
-                renderAttachButtonIcon={renderAttachButtonIcon}
-                attachmentMenuItems={attachmentMenuItems}
-                addAttachmentLabel={t("composer.input.addAttachment")}
-              />
-              {leftContent}
-            </View>
-
-            {/* Right: voice button, contextual button (realtime/send/cancel) */}
-            <View style={styles.rightButtonGroup}>
-              {beforeVoiceContent}
-              <VoiceButtonTooltip
-                visible={mode.showVoice}
-                onVoicePress={handleVoicePress}
-                isDictationStartEnabled={isDictationStartEnabled}
-                voiceButtonAccessibilityLabel={voiceButtonAccessibilityLabel}
-                voiceButtonStyle={voiceButtonStyle}
-                renderVoiceButtonIcon={renderVoiceButtonIcon}
-                voiceTooltipText={voiceTooltipText}
-                isRealtimeVoiceForCurrentAgent={isRealtimeVoiceForCurrentAgent}
-                voiceMuteToggleKeys={voiceMuteToggleKeys}
-                dictationToggleKeys={dictationToggleKeys}
-              />
-              {rightContent}
-              <PrimaryAction
-                kind={primaryActionKind}
-                activeActionContent={activeActionContent}
-                shouldShow
-                canPressLoadingButton={canPressLoadingButton}
-                onSubmitLoadingPress={onSubmitLoadingPress}
-                onDefaultSendAction={handleDefaultSendAction}
-                isSendButtonDisabled={isSendButtonDisabled}
-                submitAccessibilityLabel={submitAccessibilityLabel}
-                sendButtonCombinedStyle={sendButtonCombinedStyle}
-                isSubmitLoading={isSubmitLoading}
-                submitIcon={submitIcon}
-                submitLabel={submitLabel}
-                submitButtonTestID={submitButtonTestID}
-                buttonIconSize={buttonIconSize}
-                sendKeys={DEFAULT_SEND_KEYS}
-                sendTooltipLabel={sendTooltipLabel}
-              />
-            </View>
+          {/* Right: voice button, contextual button (realtime/send/cancel) */}
+          <View style={styles.rightButtonGroup}>
+            {beforeVoiceContent}
+            <VoiceButtonTooltip
+              visible={mode.showVoice}
+              onVoicePress={handleVoicePress}
+              isDictationStartEnabled={isDictationStartEnabled}
+              voiceButtonAccessibilityLabel={voiceButtonAccessibilityLabel}
+              voiceButtonStyle={voiceButtonStyle}
+              renderVoiceButtonIcon={renderVoiceButtonIcon}
+              voiceTooltipText={voiceTooltipText}
+              isRealtimeVoiceForCurrentAgent={isRealtimeVoiceForCurrentAgent}
+              voiceMuteToggleKeys={voiceMuteToggleKeys}
+              dictationToggleKeys={dictationToggleKeys}
+            />
+            {rightContent}
+            {sendButton}
           </View>
         </View>
-
+      ),
+      [
+        mode.showAttachments,
+        isConnected,
+        disabled,
+        attachButtonStyle,
+        renderAttachButtonIcon,
+        attachmentMenuItems,
+        t,
+        leftContent,
+        beforeVoiceContent,
+        mode.showVoice,
+        handleVoicePress,
+        isDictationStartEnabled,
+        voiceButtonAccessibilityLabel,
+        voiceButtonStyle,
+        renderVoiceButtonIcon,
+        voiceTooltipText,
+        isRealtimeVoiceForCurrentAgent,
+        voiceMuteToggleKeys,
+        dictationToggleKeys,
+        rightContent,
+        sendButton,
+      ],
+    );
+    const voiceOverlay = useMemo(
+      () => (
         <View
           style={overlayContainerStyle}
           pointerEvents={surfacePresentation.overlay.pointerEvents}
@@ -1903,6 +2141,62 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(
             onRealtimeVoiceStop={handleRealtimeVoiceStop}
           />
         </View>
+      ),
+      [
+        overlayContainerStyle,
+        surfacePresentation.overlay.pointerEvents,
+        showDictationOverlay,
+        showRealtimeOverlay,
+        voice,
+        dictationVolume,
+        dictationDuration,
+        isDictating,
+        isDictationProcessing,
+        dictationStatus,
+        dictationError,
+        handleCancelRecording,
+        handleAcceptRecording,
+        handleAcceptAndSendRecording,
+        handleRetryFailedRecording,
+        handleDiscardFailedRecording,
+        handleRealtimeVoiceStop,
+      ],
+    );
+    const enterFullscreen = useCallback(() => changePresentation(true), [changePresentation]);
+    return (
+      <View
+        ref={rootRef}
+        style={styles.container}
+        testID="message-input-root"
+        onLayout={handleComposerLayout}
+      >
+        <MessageInputAutoFocus
+          enabled={autoFocus}
+          autoFocusKey={autoFocusKey}
+          textInputRef={textInputRef}
+        />
+        <ComposerInputPresentation
+          fullscreen={isFullscreen}
+          iconSize={buttonIconSize}
+          active={isActiveComposer}
+          surface={textSurface}
+          toolbar={toolbar}
+          send={sendButton}
+          error={props.submissionError}
+          onExit={exitFullscreen}
+          inputWrapperRef={inputWrapperRef}
+          inputWrapperStyle={inputWrapperCombinedStyle}
+          inputPointerEvents={surfacePresentation.input.pointerEvents}
+          attachmentSlot={attachmentSlot}
+          showFullscreenButton={shouldShowFullscreenControl(
+            isCompact,
+            readOnly,
+            showOverlay,
+            renderedLines,
+          )}
+          onEnter={enterFullscreen}
+          overlay={voiceOverlay}
+        />
       </View>
     );
   },
@@ -1947,6 +2241,19 @@ const styles = StyleSheet.create((theme: Theme) => ({
   inputWrapperReadOnly: {
     borderStyle: "dotted",
   },
+  compactTextSurface: { paddingRight: 36 },
+  fullscreenTextSurface: { flex: 1, minHeight: 0 },
+  fullscreenTextInput: { flex: 1, height: "100%", textAlignVertical: "top" },
+  lineMeasurement: {
+    position: "absolute",
+    top: 0,
+    left: 0,
+    right: 36,
+    opacity: 0,
+    maxHeight: undefined,
+    minHeight: undefined,
+    height: undefined,
+  },
   textInputScrollWrapper: {
     flexShrink: 1,
     position: "relative",

packages/app/src/composer/input/presentation.tsx

@@ -0,0 +1,146 @@
+import { useCallback, useMemo, type ReactNode, type Ref } from "react";
+import { View, type ViewProps } from "react-native";
+import { Maximize2, Minimize2 } from "lucide-react-native";
+import { useTranslation } from "react-i18next";
+import { Button } from "@/components/ui/button";
+import { isWeb } from "@/constants/platform";
+import { StyleSheet } from "react-native-unistyles";
+import { ComposerFullscreenHost } from "./fullscreen-host";
+
+function keepEditorFocused(event: import("react-native").PointerEvent) {
+  if (isWeb) event.preventDefault();
+}
+
+/** Both presentations receive the same editing surface and send capability. */
+export function ComposerInputPresentation({
+  fullscreen,
+  iconSize,
+  active,
+  surface,
+  toolbar,
+  send,
+  error,
+  onExit,
+  inputWrapperRef,
+  inputWrapperStyle,
+  inputPointerEvents,
+  attachmentSlot,
+  showFullscreenButton,
+  onEnter,
+  overlay,
+}: {
+  fullscreen: boolean;
+  iconSize: number;
+  active: boolean;
+  surface: ReactNode;
+  toolbar: ReactNode;
+  send: ReactNode;
+  error: ReactNode;
+  onExit: () => void;
+  inputWrapperRef: Ref<View>;
+  inputWrapperStyle: ViewProps["style"];
+  inputPointerEvents: ViewProps["pointerEvents"];
+  attachmentSlot: ReactNode;
+  showFullscreenButton: boolean;
+  onEnter: () => void;
+  overlay: ReactNode;
+}) {
+  const { t } = useTranslation();
+  // ArrowUp ends at x19; the fullscreen glyphs end at x21 in Lucide's 24px viewBox.
+  // Compensate for that difference to align visible ink with Send, not just boxes.
+  const railAdjustment = iconSize / 12;
+  const maximizeIcon = useCallback(
+    (color: string) => <Maximize2 color={color} size={iconSize} />,
+    [iconSize],
+  );
+  const minimizeIcon = useCallback(
+    (color: string) => <Minimize2 color={color} size={iconSize} />,
+    [iconSize],
+  );
+  const enterStyle = useMemo(
+    () => [styles.fullscreenButton, { right: -6 + railAdjustment }],
+    [railAdjustment],
+  );
+  const exitStyle = useMemo(
+    () => [styles.iconButton, { marginRight: railAdjustment }],
+    [railAdjustment],
+  );
+  if (!fullscreen)
+    return (
+      <>
+        <View ref={inputWrapperRef} style={inputWrapperStyle} pointerEvents={inputPointerEvents}>
+          {attachmentSlot}
+          <View style={styles.inlineTextSurface}>
+            {surface}
+            {showFullscreenButton ? (
+              <Button
+                variant="ghost"
+                size="xs"
+                accessibilityLabel={t("composer.input.fullscreen")}
+                leftIcon={maximizeIcon}
+                onPointerDown={keepEditorFocused}
+                onPress={onEnter}
+                style={enterStyle}
+                hitSlop={8}
+              >
+                {null}
+              </Button>
+            ) : null}
+          </View>
+          {toolbar}
+        </View>
+        {overlay}
+      </>
+    );
+  return (
+    <ComposerFullscreenHost onExit={onExit} active={active}>
+      <View style={styles.fullscreen} testID="composer-fullscreen">
+        <View style={styles.exitRow}>
+          <Button
+            variant="ghost"
+            size="xs"
+            accessibilityLabel={t("composer.input.exitFullscreen")}
+            onPointerDown={keepEditorFocused}
+            onPress={onExit}
+            style={exitStyle}
+            leftIcon={minimizeIcon}
+            hitSlop={8}
+          >
+            {null}
+          </Button>
+        </View>
+        {surface}
+        {error}
+        <View style={styles.sendRow}>{send}</View>
+      </View>
+    </ComposerFullscreenHost>
+  );
+}
+
+const styles = StyleSheet.create((theme) => ({
+  inlineTextSurface: { flexShrink: 1, position: "relative" },
+  iconButton: {
+    width: 28,
+    height: 28,
+    padding: 0,
+    borderWidth: 0,
+    borderRadius: theme.borderRadius.full,
+  },
+  fullscreenButton: {
+    position: "absolute",
+    top: 0,
+    width: 28,
+    height: 28,
+    padding: 0,
+    borderWidth: 0,
+    borderRadius: theme.borderRadius.full,
+  },
+  fullscreen: {
+    flex: 1,
+    backgroundColor: theme.colors.surface1,
+    padding: theme.spacing[4],
+    gap: theme.spacing[3],
+  },
+  exitRow: { alignItems: "flex-end", flexShrink: 0 },
+  sendRow: { flexShrink: 0, alignItems: "flex-end" },
+}));

packages/app/src/composer/input/state.test.ts

@@ -4,6 +4,7 @@ import {
   computeCanStartDictation,
   resolveActiveSendBehavior,
   resolveComposerSurfacePresentation,
+  resolveComposerSurfaceText,
   runAlternateSendAction,
   runDefaultSendAction,
   runMessageInputKeyboardAction,
@@ -316,3 +317,26 @@ describe("stopRealtimeVoice", () => {
     expect(calls).toEqual(["cancel agent", "stop voice"]);
   });
 });
+
+describe("composer surface text", () => {
+  it("measures a new nonempty replacement before it reaches the editing handle", () => {
+    const replacement = { kind: "replace" as const, key: "draft:2", text: "First\nSecond\nThird" };
+    expect(resolveComposerSurfaceText("Short draft", replacement, "draft:1")).toBe(
+      replacement.text,
+    );
+  });
+
+  it("keeps live typing once the replacement is applied", () => {
+    const replacement = { kind: "replace" as const, key: "draft:2", text: "First\nSecond\nThird" };
+    expect(resolveComposerSurfaceText("Edited live draft", replacement, "draft:2")).toBe(
+      "Edited live draft",
+    );
+  });
+
+  it("uses the live handoff when its replacement has already been applied", () => {
+    const replacement = { kind: "initial" as const, key: "draft:0", text: "Stale publication" };
+    expect(resolveComposerSurfaceText("Live remount handoff", replacement, "draft:0")).toBe(
+      "Live remount handoff",
+    );
+  });
+});

packages/app/src/composer/input/state.ts

@@ -1,6 +1,6 @@
 import type { DaemonClient } from "@getpaseo/client/internal/daemon-client";
 import type { ActiveTurnBehavior } from "@getpaseo/protocol/messages";
-import type { MessagePayload } from "@/composer/types";
+import type { MessagePayload, TextReplacement } from "@/composer/types";
 import type { MessageInputKeyboardActionKind } from "@/keyboard/actions";
 
 export type SendBehavior = ActiveTurnBehavior | "queue";
@@ -192,3 +192,11 @@ export async function stopRealtimeVoice(ctx: StopRealtimeVoiceContext): Promise<
 
   await ctx.voice.stopVoice();
 }
+
+export function resolveComposerSurfaceText(
+  liveText: string,
+  replacement: TextReplacement,
+  appliedReplacementKey: string,
+): string {
+  return replacement.key === appliedReplacementKey ? liveText : replacement.text;
+}

packages/app/src/composer/input/text-input.web.browser.test.tsx

@@ -96,6 +96,35 @@ describe("ComposerTextInput web IME composition", () => {
     expect(document.activeElement).toBe(mounted.textarea);
   });
 
+  it("keeps its editing handle and selection across a rerender during composition", () => {
+    const recorder = createTextRecorder();
+    const mounted = mountInput(recorder.onChangeText);
+    const handle = mounted.inputRef.current;
+    act(() => {
+      handle?.focus();
+      dispatchComposition(mounted.textarea, "compositionstart");
+      typeFromIme(mounted.textarea, "你好");
+      mounted.textarea.setSelectionRange(1, 2);
+      mounted.root.render(
+        <ComposerTextInput
+          ref={mounted.inputRef}
+          initialValue="stale publication"
+          multiline
+          onChangeText={recorder.onChangeText}
+          placeholder="updated presentation"
+        />,
+      );
+    });
+    expect(mounted.inputRef.current).toBe(handle);
+    expect(handle?.getNativeRef()).toBe(mounted.textarea);
+    expect([mounted.textarea.selectionStart, mounted.textarea.selectionEnd]).toEqual([1, 2]);
+    expect(document.activeElement).toBe(mounted.textarea);
+    expect(recorder.changes).toEqual([]);
+    act(() => dispatchComposition(mounted.textarea, "compositionend"));
+    expect(recorder.changes).toEqual(["你好"]);
+    expect(handle?.getText()).toBe("你好");
+  });
+
   it("keeps locally typed text when its parent rerenders with a stale value", () => {
     const recorder = createTextRecorder();
     const mounted = mountInput(recorder.onChangeText);

packages/app/src/composer/types.ts

@@ -10,6 +10,7 @@ export interface MessagePayload {
 }
 
 export interface TextReplacement {
+  kind: "initial" | "replace";
   key: string;
   text: string;
 }

packages/app/src/i18n/resources/ar.ts

@@ -124,6 +124,8 @@ export const ar: TranslationResources = {
     input: {
       accessibilityLabel: "وكيل الرسائل...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "ملء الشاشة",
+      exitFullscreen: "الخروج من ملء الشاشة",
       focusHint: "{{shortcut}}للتركيز",
       addAttachment: "إضافة مرفق",
       interruptAgent: "عامل المقاطعة",

packages/app/src/i18n/resources/en.ts

@@ -120,6 +120,8 @@ export const en = {
     input: {
       accessibilityLabel: "Message agent...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "Fullscreen",
+      exitFullscreen: "Exit fullscreen",
       focusHint: "{{shortcut}} to focus",
       addAttachment: "Add attachment",
       interruptAgent: "Interrupt agent",

packages/app/src/i18n/resources/es.ts

@@ -125,6 +125,8 @@ export const es: TranslationResources = {
     input: {
       accessibilityLabel: "Agente de mensajes...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "Pantalla completa",
+      exitFullscreen: "Salir de pantalla completa",
       focusHint: "{{shortcut}}para enfocar",
       addAttachment: "Agregar archivo adjunto",
       interruptAgent: "agente de interrupción",

packages/app/src/i18n/resources/fr.ts

@@ -126,6 +126,8 @@ export const fr: TranslationResources = {
     input: {
       accessibilityLabel: "Écrire à l’agent…",
       terminalAccessibilityLabel: "Prompt du terminal",
+      fullscreen: "Plein écran",
+      exitFullscreen: "Quitter le plein écran",
       focusHint: "{{shortcut}} pour saisir",
       addAttachment: "Ajouter une pièce jointe",
       interruptAgent: "Interrompre l’agent",

packages/app/src/i18n/resources/ja.ts

@@ -125,6 +125,8 @@ export const ja: TranslationResources = {
     input: {
       accessibilityLabel: "エージェントにメッセージ...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "全画面表示",
+      exitFullscreen: "全画面表示を終了",
       focusHint: "{{shortcut}}でフォーカス",
       addAttachment: "添付ファイルを追加",
       interruptAgent: "エージェントを中断",

packages/app/src/i18n/resources/ko.ts

@@ -124,6 +124,8 @@ export const ko: TranslationResources = {
     input: {
       accessibilityLabel: "에이전트에게 메시지...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "전체 화면",
+      exitFullscreen: "전체 화면 종료",
       focusHint: "{{shortcut}}로 포커스",
       addAttachment: "첨부 추가",
       interruptAgent: "에이전트 중단",

packages/app/src/i18n/resources/pt-BR.ts

@@ -125,6 +125,8 @@ export const ptBR: TranslationResources = {
     input: {
       accessibilityLabel: "Enviar mensagem ao agente...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "Tela cheia",
+      exitFullscreen: "Sair da tela cheia",
       focusHint: "{{shortcut}} para focar",
       addAttachment: "Adicionar anexo",
       interruptAgent: "Interromper agente",

packages/app/src/i18n/resources/ru.ts

@@ -125,6 +125,8 @@ export const ru: TranslationResources = {
     input: {
       accessibilityLabel: "Написать агенту...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "Полный экран",
+      exitFullscreen: "Выйти из полноэкранного режима",
       focusHint: "{{shortcut}}, для фокуса",
       addAttachment: "Добавить вложение",
       interruptAgent: "Прервать агента",

packages/app/src/i18n/resources/zh-CN.ts

@@ -124,6 +124,8 @@ export const zhCN: TranslationResources = {
     input: {
       accessibilityLabel: "给 Agent 发消息...",
       terminalAccessibilityLabel: "Terminal prompt",
+      fullscreen: "全屏",
+      exitFullscreen: "退出全屏",
       focusHint: "{{shortcut}} 聚焦",
       addAttachment: "添加附件",
       interruptAgent: "中断 Agent",

packages/app/src/keyboard/keyboard-shortcuts.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it, vi } from "vitest";
 import { formatShortcut } from "@/utils/format-shortcut";
+import { keyboardEventToComboString } from "./shortcut-string";
 import {
   buildKeyboardShortcutHelpSections,
   buildEffectiveBindings,
@@ -1026,6 +1027,25 @@ describe("unassigned shortcuts", () => {
   });
 
   describe("matching", () => {
+    it("dispatches a captured Dvorak binding on the same logical key", () => {
+      const event = keyboardInput({ key: "b", code: "KeyN", metaKey: true });
+      const combo = keyboardEventToComboString(event as KeyboardEvent);
+      expect(combo).toBe("Cmd+B");
+      const bindings = buildEffectiveBindings({ "sidebar-toggle-left-mac-cmd-b": combo! });
+
+      expect(
+        resolveShortcut({ event, context: { isMac: true, isDesktop: true }, bindings }).match
+          ?.action,
+      ).toBe("sidebar.toggle.left");
+      expect(
+        resolveShortcut({
+          event: { key: "x", code: "KeyB", metaKey: true },
+          context: { isMac: true, isDesktop: true },
+          bindings,
+        }).match,
+      ).toBeNull();
+    });
+
     it("stops matching a shortcut the user unassigned", () => {
       const bindings = buildEffectiveBindings({ [TAB_NEW_BINDING]: UNASSIGNED_COMBO });
 

packages/app/src/keyboard/shortcut-string.test.ts

@@ -22,6 +22,45 @@ function keyboardEvent(overrides: Partial<KeyboardEvent>): KeyboardEvent {
 }
 
 describe("keyboardEventToComboString", () => {
+  it("captures the Dvorak character rather than its QWERTY position", () => {
+    expect(
+      keyboardEventToComboString(keyboardEvent({ key: "b", code: "KeyN", metaKey: true })),
+    ).toBe("Cmd+B");
+  });
+
+  it("captures shifted Dvorak letters and punctuation at other physical positions", () => {
+    expect(
+      keyboardEventToComboString(
+        keyboardEvent({ key: "T", code: "KeyK", metaKey: true, shiftKey: true }),
+      ),
+    ).toBe("Shift+Cmd+T");
+    expect(
+      keyboardEventToComboString(keyboardEvent({ key: ";", code: "KeyZ", ctrlKey: true })),
+    ).toBe("Ctrl+;");
+    expect(
+      keyboardEventToComboString(
+        keyboardEvent({ key: "?", code: "BracketLeft", ctrlKey: true, shiftKey: true }),
+      ),
+    ).toBe("Ctrl+Shift+/");
+  });
+
+  it("keeps named keys and rewritten Option characters capturable", () => {
+    expect(keyboardEventToComboString(keyboardEvent({ key: "ArrowLeft", code: "ArrowLeft" }))).toBe(
+      "ArrowLeft",
+    );
+    expect(
+      keyboardEventToComboString(keyboardEvent({ key: "†", code: "KeyT", altKey: true })),
+    ).toBe("Alt+T");
+  });
+
+  it("does not record a named key that dispatch does not support", () => {
+    expect(
+      keyboardEventToComboString(
+        keyboardEvent({ key: "Enter", code: "NumpadEnter", ctrlKey: true }),
+      ),
+    ).toBeNull();
+  });
+
   it("captures the minus key (regression: previously returned null)", () => {
     expect(keyboardEventToComboString(keyboardEvent({ key: "-", code: "Minus" }))).toBe("-");
   });

packages/app/src/keyboard/shortcut-string.ts

@@ -266,7 +266,16 @@ export function keyboardEventToComboString(event: KeyboardEvent): string | null
   if (event.shiftKey) parts.push("Shift");
   if (event.metaKey) parts.push("Cmd");
 
-  const humanKey = CODE_TO_KEY[event.code];
+  // Capture the same logical character that dispatch matches. Keep the code
+  // fallback for named keys and Option combinations whose key is rewritten.
+  const eventKey = event.key.toLowerCase();
+  const logicalKey = Object.entries(KEY_MAP).find(
+    ([, mapping]) =>
+      mapping.key?.length === 1 &&
+      (mapping.key.toLowerCase() === eventKey ||
+        (event.shiftKey && mapping.shiftedKey === event.key)),
+  )?.[0];
+  const humanKey = logicalKey ?? CODE_TO_KEY[event.code];
   if (humanKey) {
     parts.push(humanKey);
   } else {

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

@@ -104,6 +104,7 @@ function transformSourceItem(
     const projected: PluginTimelineStreamItem = {
       kind: "plugin",
       id: `${pluginItem.pluginId}/${pluginItem.id}`,
+      sourceId: item.id,
       timestamp: item.timestamp,
       pluginId: pluginItem.pluginId,
       pluginItemId: pluginItem.id,

packages/app/src/polyfills/install-early.ts

@@ -0,0 +1,12 @@
+// Side-effect module imported first by index.ts. Babel hoists imports above
+// statements, so polyfill calls written in index.ts would run only after every
+// imported module had evaluated. Modules that read these globals at load time,
+// such as @xterm/headless reading navigator.userAgent, need them installed here.
+import { polyfillCrypto } from "./crypto";
+import { polyfillNavigator } from "./navigator";
+import { polyfillScreenOrientation } from "./screen-orientation";
+
+polyfillCrypto();
+polyfillNavigator();
+// Polyfill screen.orientation for WebKitGTK desktop runtimes that lack the API.
+polyfillScreenOrientation();

packages/app/src/polyfills/navigator-startup.test.ts

@@ -0,0 +1,56 @@
+import { readFileSync } from "node:fs";
+import { createRequire } from "node:module";
+import { createContext, runInContext } from "node:vm";
+import ts from "typescript";
+import { expect, it } from "vitest";
+
+it("installs navigator before the app entry loads its other dependencies", () => {
+  const entry = ts.createSourceFile(
+    "index.ts",
+    readFileSync(new URL("../../index.ts", import.meta.url), "utf8"),
+    ts.ScriptTarget.Latest,
+  );
+  const firstImport = entry.statements.find(ts.isImportDeclaration);
+  expect(firstImport?.moduleSpecifier.getText(entry)).toBe('"./src/polyfills/install-early"');
+  const early = ts.createSourceFile(
+    "install-early.ts",
+    readFileSync(new URL("./install-early.ts", import.meta.url), "utf8"),
+    ts.ScriptTarget.Latest,
+  );
+  expect(
+    early.statements.some(
+      (statement) =>
+        ts.isExpressionStatement(statement) &&
+        ts.isCallExpression(statement.expression) &&
+        statement.expression.expression.getText(early) === "polyfillNavigator",
+    ),
+  ).toBe(true);
+});
+
+it("initializes the native navigator before evaluating the real terminal dependency", () => {
+  const require = createRequire(import.meta.url);
+  const terminalSource = readFileSync(require.resolve("@xterm/headless"), "utf8");
+  const navigatorSource = ts.transpileModule(
+    readFileSync(new URL("./navigator.ts", import.meta.url), "utf8"),
+    { compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2022 } },
+  ).outputText;
+  // Each VM owns its globals, so the native navigator shape never replaces
+  // globals in the test runner or needs a native-module mock.
+  const uninitialized = createContext({
+    navigator: {},
+    window: {},
+    module: { exports: {} },
+    exports: {},
+  });
+  expect(() => runInContext(terminalSource, uninitialized)).toThrow(/includes/);
+
+  const initialized = createContext({
+    navigator: {},
+    window: {},
+    module: { exports: {} },
+    exports: {},
+  });
+  runInContext(navigatorSource, initialized);
+  runInContext("exports.polyfillNavigator()", initialized);
+  expect(() => runInContext(terminalSource, initialized)).not.toThrow();
+});

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

@@ -1723,7 +1723,7 @@ export function NewWorkspaceScreen({
     [terminalComposerValue],
   );
   const terminalTextReplacement = useMemo(
-    () => ({ key: launchFocusKey, text: terminalComposerValue }),
+    () => ({ kind: "replace" as const, key: launchFocusKey, text: terminalComposerValue }),
     [launchFocusKey, terminalComposerValue],
   );
 

packages/app/src/screens/workspace/workspace-pane-content.tsx

@@ -1,3 +1,4 @@
+import { ComposerEditingScope } from "@/composer/editing-session";
 import React, { useMemo, type ComponentType } from "react";
 import invariant from "tiny-invariant";
 import {
@@ -156,7 +157,12 @@ export function WorkspacePaneContent({
     >
       <PaneProvider value={stablePaneContextValue}>
         <PaneFocusProvider value={paneFocusValue}>
-          <Component key={key} />
+          <ComposerEditingScope
+            tabId={paneContextValue.tabId}
+            targetKey={JSON.stringify(paneContextValue.target)}
+          >
+            <Component key={key} />
+          </ComposerEditingScope>
         </PaneFocusProvider>
       </PaneProvider>
     </RenderProfile>

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

@@ -1,3 +1,4 @@
+import { WorkspaceComposerEditingSessionsProvider } from "@/composer/editing-session";
 import { LoadingSpinner } from "@/components/ui/loading-spinner";
 import type { JsonValue } from "@getpaseo/protocol/agent-types";
 import { getOpenAgentTabLabel } from "@getpaseo/protocol/agent-labels";
@@ -753,14 +754,20 @@ function WorkspaceContentProviders({
 function WorkspacePanelContent({
   launcher,
   content,
+  tabIds,
+  workspaceKey,
 }: {
+  workspaceKey: string;
   launcher: NewTabLauncher;
   content: ReactNode;
+  tabIds: readonly string[];
 }) {
   return (
-    <NewTabLauncherProvider value={launcher}>
-      <View style={styles.content}>{content}</View>
-    </NewTabLauncherProvider>
+    <WorkspaceComposerEditingSessionsProvider workspaceKey={workspaceKey} tabIds={tabIds}>
+      <NewTabLauncherProvider value={launcher}>
+        <View style={styles.content}>{content}</View>
+      </NewTabLauncherProvider>
+    </WorkspaceComposerEditingSessionsProvider>
   );
 }
 
@@ -3491,6 +3498,8 @@ function WorkspaceScreenContent({
   const workspacePanelContent = (
     <WorkspacePanelContent
       launcher={newTabLauncher}
+      workspaceKey={`${normalizedServerId}:${normalizedWorkspaceId}`}
+      tabIds={uiTabs.map((tab) => tab.tabId)}
       content={isMobile ? content : desktopContent}
     />
   );

packages/app/src/types/stream.ts

@@ -804,6 +804,8 @@ export interface CompactionItem {
 export interface PluginTimelineStreamItem {
   kind: "plugin";
   id: string;
+  /** The id of the stream item a timeline transformer replaced; set only by projection. */
+  sourceId?: string;
   timelineCursor?: TimelinePosition;
   turnId?: string;
   timestamp: Date;

packages/app/src/utils/workspace-directory.test.ts

@@ -2,6 +2,10 @@ import { describe, expect, it } from "vitest";
 import { requireWorkspaceDirectory, resolveWorkspaceDirectory } from "./workspace-directory";
 
 describe("resolveWorkspaceDirectory", () => {
+  it("preserves significant whitespace in a workspace folder name", () => {
+    expect(resolveWorkspaceDirectory({ workspaceDirectory: "/repo " })).toBe("/repo ");
+    expect(requireWorkspaceDirectory({ workspaceDirectory: "/repo /" })).toBe("/repo ");
+  });
   it("canonicalizes a workspace directory and returns null when blank", () => {
     expect(resolveWorkspaceDirectory({ workspaceDirectory: "C:\\repo\\app\\" })).toBe(
       "C:/repo/app",

packages/app/src/utils/workspace-identity.ts

@@ -13,11 +13,10 @@ export function normalizeWorkspaceOpaqueId(value: string | null | undefined): st
 }
 
 export function normalizeWorkspacePath(value: string | null | undefined): string | null {
-  const trimmed = trimNonEmpty(value);
-  if (!trimmed) {
+  if (typeof value !== "string" || value.trim().length === 0) {
     return null;
   }
-  const withUnixSeparators = trimmed.replace(/\\/g, "/");
+  const withUnixSeparators = value.replace(/\\/g, "/");
   if (withUnixSeparators === "/") {
     return withUnixSeparators;
   }

packages/app/vitest-environment.test.ts

@@ -1,4 +1,5 @@
 import { spawnSync } from "node:child_process";
+import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
 import { createRequire } from "node:module";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
@@ -8,6 +9,35 @@ const appDir = fileURLToPath(new URL(".", import.meta.url));
 const rootDir = path.resolve(appDir, "../..");
 const require = createRequire(import.meta.url);
 const vitestEntry = path.join(path.dirname(require.resolve("vitest/package.json")), "vitest.mjs");
+const tsgoEntry = path.join(
+  path.dirname(require.resolve("@typescript/native-preview/package.json")),
+  "bin/tsgo.js",
+);
+
+it("the test configuration typechecks with Expo's generated environment declaration", () => {
+  const fixtureDir = mkdtempSync(path.join(appDir, ".vitest-expo-env-"));
+  try {
+    writeFileSync(path.join(fixtureDir, "expo-env.d.ts"), '/// <reference types="expo/types" />\n');
+    writeFileSync(
+      path.join(fixtureDir, "tsconfig.json"),
+      JSON.stringify({
+        extends: "../tsconfig.json",
+        files: ["../vitest.config.ts", "expo-env.d.ts"],
+        include: [],
+      }),
+    );
+    const result = spawnSync(
+      process.execPath,
+      [tsgoEntry, "--noEmit", "--project", path.join(fixtureDir, "tsconfig.json")],
+      { cwd: appDir, encoding: "utf8", timeout: 30_000 },
+    );
+
+    expect(result.error).toBeUndefined();
+    expect(result.status, result.stdout + result.stderr).toBe(0);
+  } finally {
+    rmSync(fixtureDir, { recursive: true, force: true });
+  }
+}, 40_000);
 
 it.each([
   {

packages/app/vitest.config.ts

@@ -4,7 +4,7 @@ import path from "path";
 import fs from "fs";
 
 // Set this before Vite resolves dependencies and Vitest starts its workers.
-process.env.NODE_ENV = "test";
+Object.assign(process.env, { NODE_ENV: "test" });
 
 const appNodeModules = path.resolve(__dirname, "node_modules");
 const rootNodeModules = path.resolve(__dirname, "../../node_modules");

packages/desktop/e2e/window-startup.e2e.mjs

@@ -0,0 +1,48 @@
+import { mkdtemp, rm, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { _electron as electron, expect } from "playwright/test";
+
+const root = await mkdtemp(path.join(tmpdir(), "paseo-window-startup-"));
+const modulePath = fileURLToPath(new URL("../dist/window/show-when-ready.js", import.meta.url));
+
+async function launchWindowWithoutHiddenFrames() {
+  const main = path.join(root, "main.cjs");
+  await writeFile(
+    main,
+    `const { app, BrowserWindow } = require("electron");
+     const { showWindowWhenReady } = require(${JSON.stringify(modulePath)});
+     app.setPath("userData", ${JSON.stringify(path.join(root, "user-data"))});
+     app.whenReady().then(async () => {
+       const win = global.mainWindow = new BrowserWindow({ show: false, paintWhenInitiallyHidden: false });
+       showWindowWhenReady(win, { showOnLoad: true });
+       await win.loadURL("data:text/html,<h1>Desktop ready</h1>");
+       global.visibleAfterLoad = win.isVisible();
+     });`,
+  );
+  const env = Object.fromEntries(
+    Object.entries(process.env).filter(([key]) => key !== "ELECTRON_RUN_AS_NODE"),
+  );
+  const displayArgs = process.platform === "linux" ? ["--ozone-platform=x11", "--disable-gpu"] : [];
+  return electron.launch({
+    args: ["--no-sandbox", ...displayArgs, main],
+    env,
+  });
+}
+
+async function expectLoadedDesktopIsShown(desktop) {
+  await expect.poll(() => desktop.evaluate(() => global.visibleAfterLoad)).toBe(true);
+  const page = await desktop.firstWindow();
+  await expect(page.getByRole("heading", { name: "Desktop ready" })).toBeVisible();
+}
+
+let desktop;
+try {
+  desktop = await launchWindowWithoutHiddenFrames();
+  await expectLoadedDesktopIsShown(desktop);
+  console.log("Loaded desktop is visible without hidden compositor frames");
+} finally {
+  await desktop?.close();
+  await rm(root, { recursive: true, force: true });
+}

packages/desktop/package.json

@@ -25,7 +25,8 @@
     "verify:electron-cdp": "node ./scripts/verify-electron-cdp.mjs",
     "test": "install-electron && vitest run --exclude \"e2e/**\"",
     "typecheck": "tsgo --noEmit -p tsconfig.json",
-    "test:e2e:lifecycle": "npm run build:main && node ./e2e/daemon-lifecycle.e2e.mjs"
+    "test:e2e:lifecycle": "npm run build:main && node ./e2e/daemon-lifecycle.e2e.mjs",
+    "test:e2e:window-startup": "npm run build:main && node ./e2e/window-startup.e2e.mjs"
   },
   "dependencies": {
     "@getpaseo/cli": "*",

packages/desktop/src/main.ts

@@ -43,6 +43,7 @@ import {
   buildStandardContextMenuItems,
 } from "./window/window-manager.js";
 import { setupDarwinCompositorWatchdog } from "./window/compositor-watchdog/index.js";
+import { showWindowWhenReady } from "./window/show-when-ready.js";
 import { resolveDesktopWindowChromeMode, windowChromeModeArgument } from "./window/chrome.js";
 import { registerDialogHandlers } from "./features/dialogs.js";
 import {
@@ -773,8 +774,8 @@ async function createWindow(
     registerBrowserWebviewNavigationGuards(contents);
   });
 
-  mainWindow.once("ready-to-show", () => {
-    mainWindow.show();
+  showWindowWhenReady(mainWindow, {
+    showOnLoad: process.platform === "linux",
   });
 
   if (!app.isPackaged) {

packages/desktop/src/window/show-when-ready.test.ts

@@ -0,0 +1,57 @@
+import { EventEmitter } from "node:events";
+import { describe, expect, it } from "vitest";
+import { showWindowWhenReady } from "./show-when-ready.js";
+
+class Window extends EventEmitter {
+  webContents = new EventEmitter();
+  shows = 0;
+  destroyed = false;
+  show() {
+    this.shows += 1;
+  }
+  isDestroyed() {
+    return this.destroyed;
+  }
+  close() {
+    this.destroyed = true;
+    this.emit("closed");
+  }
+}
+
+describe("showWindowWhenReady", () => {
+  it("shows a loaded Linux window even when no initial frame was painted", () => {
+    const win = new Window();
+    showWindowWhenReady(win, { showOnLoad: true });
+    expect(win.shows).toBe(0);
+    win.webContents.emit("did-finish-load");
+    expect(win.shows).toBe(1);
+    win.emit("ready-to-show");
+    expect(win.shows).toBe(1);
+  });
+
+  it("shows on the first frame without showing again after load", () => {
+    const win = new Window();
+    showWindowWhenReady(win, { showOnLoad: true });
+    win.emit("ready-to-show");
+    win.webContents.emit("did-finish-load");
+    expect(win.shows).toBe(1);
+  });
+
+  it("preserves waiting for the initial frame when show on load is disabled", () => {
+    const win = new Window();
+    showWindowWhenReady(win, { showOnLoad: false });
+    win.webContents.emit("did-finish-load");
+    expect(win.shows).toBe(0);
+    win.emit("ready-to-show");
+    expect(win.shows).toBe(1);
+  });
+
+  it("keeps a closed window closed when readiness arrives later", () => {
+    const win = new Window();
+    showWindowWhenReady(win, { showOnLoad: true });
+    win.close();
+    win.webContents.emit("did-finish-load");
+    win.emit("ready-to-show");
+    expect(win.shows).toBe(0);
+  });
+});

packages/desktop/src/window/show-when-ready.ts

@@ -0,0 +1,25 @@
+interface ReadyToShowWindow {
+  once(event: "ready-to-show", listener: () => void): unknown;
+  webContents: {
+    once(event: "did-finish-load", listener: () => void): unknown;
+  };
+  show(): void;
+  isDestroyed(): boolean;
+}
+
+export function showWindowWhenReady(
+  win: ReadyToShowWindow,
+  options: { showOnLoad: boolean },
+): void {
+  let shown = false;
+  const show = () => {
+    if (shown || win.isDestroyed()) return;
+    shown = true;
+    win.show();
+  };
+
+  win.once("ready-to-show", show);
+  // On Linux a hidden window can wait for compositor frames until it is shown.
+  // Loading the document is sufficient to reveal it without depending on a frame.
+  if (options.showOnLoad) win.webContents.once("did-finish-load", show);
+}

packages/server/package.json

@@ -89,7 +89,7 @@
     "speech:transcribe:local": "tsx scripts/transcribe-local-wav.ts",
     "test": "npm run test:unit && npm run test:integration",
     "test:unit": "vitest run --fileParallelism --exclude \"**/*.e2e.test.ts\"",
-    "test:integration": "vitest run --maxWorkers=1 src/server/daemon-e2e/filesystem.e2e.test.ts src/server/daemon-e2e/file-download.e2e.test.ts src/server/daemon-e2e/cli-logs-follow.e2e.test.ts src/server/creation/creation.e2e.test.ts src/server/daemon-e2e/terminal-workspace-sdk.e2e.test.ts src/server/daemon-e2e/models.e2e.test.ts src/server/daemon-e2e/live-preferences.e2e.test.ts src/server/agent/model-catalog.e2e.test.ts src/server/plugins/plugin-paseo-api.e2e.test.ts && vitest run --maxWorkers=1 src/server/session.create-agent-worktree-autoarchive.e2e.test.ts -t \"creates a worktree and auto-archives both\" && vitest run --maxWorkers=1 src/server/agent/providers/opencode-bridge.local.e2e.test.ts -t \"versioned runtime\"",
+    "test:integration": "vitest run --maxWorkers=1 src/server/daemon-e2e/filesystem.e2e.test.ts src/server/daemon-e2e/file-download.e2e.test.ts src/server/daemon-e2e/cli-logs-follow.e2e.test.ts src/server/creation/creation.e2e.test.ts src/server/daemon-e2e/terminal-workspace-sdk.e2e.test.ts src/server/daemon-e2e/models.e2e.test.ts src/server/daemon-e2e/live-preferences.e2e.test.ts src/server/agent/model-catalog.e2e.test.ts src/server/plugins/plugin-paseo-api.e2e.test.ts && vitest run --maxWorkers=1 src/server/daemon-e2e/git-operations.e2e.test.ts -t \"merges into\" && vitest run --maxWorkers=1 src/server/session.create-agent-worktree-autoarchive.e2e.test.ts -t \"creates a worktree and auto-archives both\" && vitest run --maxWorkers=1 src/server/agent/providers/opencode-bridge.local.e2e.test.ts -t \"versioned runtime\"",
     "test:hub-cli-contract": "vitest run --maxWorkers=1 src/server/hub/hub-cli-contract.test.ts",
     "test:integration:all": "npm run test:e2e",
     "test:integration:real": "vitest run real.e2e.test.ts",

packages/server/scripts/supervisor.logging.test.ts

@@ -29,6 +29,7 @@ async function runSupervisorFixture(options: {
   blockLogPath?: boolean;
   /** Close the reading end of the supervisor's stdout and stderr as soon as it starts. */
   closeOutput?: boolean;
+  env?: NodeJS.ProcessEnv;
 }): Promise<{
   code: number | null;
   signal: NodeJS.Signals | null;
@@ -84,7 +85,9 @@ async function runSupervisorFixture(options: {
         ];
   const child = spawn(command, args, {
     cwd: repoRoot,
-    env: { ...process.env },
+    // A Node color-conflict warning can hit closed stderr before runSupervisor installs
+    // its pipe-error handlers. This fixture exercises the supervisor's own output.
+    env: { ...process.env, ...options.env, NO_COLOR: undefined, FORCE_COLOR: undefined },
     stdio: ["ignore", "pipe", "pipe"],
   });
 
@@ -205,10 +208,16 @@ describe("supervisor durable logging", () => {
     expect(result.stderr).toContain('"worker-json-stderr"');
   });
 
-  test("keeps supervising the worker when nobody reads its stdout or stderr", async () => {
-    const result = await runSupervisorFixture({
-      closeOutput: true,
-      workerSource: `
+  test.each([
+    { colors: "inherited", env: {} },
+    { colors: "conflicting", env: { NO_COLOR: "1", FORCE_COLOR: "1" } },
+  ])(
+    "keeps supervising the worker when nobody reads its stdout or stderr with $colors colors",
+    async ({ env }) => {
+      const result = await runSupervisorFixture({
+        closeOutput: true,
+        env,
+        workerSource: `
         process.on("message", (message) => {
           if (message?.type === "paseo:graceful-shutdown") process.exit(0);
         });
@@ -220,14 +229,15 @@ describe("supervisor durable logging", () => {
         }, 500);
         setInterval(() => {}, 1000);
       `,
-    });
+      });
 
-    expect(result.code).toBe(0);
-    expect(result.signal).toBeNull();
-    expect(result.log).toContain("first stderr line\n");
-    expect(result.log).toContain("later stdout line\n");
-    expect(result.log).toContain('"reason":"closed_output_probe"');
-  });
+      expect(result.code).toBe(0);
+      expect(result.signal).toBeNull();
+      expect(result.log).toContain("first stderr line\n");
+      expect(result.log).toContain("later stdout line\n");
+      expect(result.log).toContain('"reason":"closed_output_probe"');
+    },
+  );
 
   test("preserves raw non-JSON stdout and stderr lines", async () => {
     const result = await runSupervisorFixture({

packages/server/src/server/agent/agent-prompt.test.ts

@@ -222,6 +222,11 @@ function createFinishNotificationScenario(
         type: "agent_state",
         agent: childAgent,
       });
+      subscriber?.({
+        type: "agent_stream",
+        agentId: "child-agent",
+        event: { type: "turn_completed", provider: "codex" },
+      });
     },
     async finishChildAndReadParentPrompt() {
       const parentPrompt = new Promise<string>((resolve) => {
@@ -540,6 +545,11 @@ it("does not notify archived callers", async () => {
     type: "agent_state",
     agent: childAgent,
   });
+  subscriber?.({
+    type: "agent_stream",
+    agentId: "child-agent",
+    event: { type: "turn_completed", provider: "codex" },
+  });
 
   await vi.waitFor(() => {
     expect(agentStorageGetSpy).toHaveBeenCalledWith("caller-agent");

packages/server/src/server/agent/agent-prompt.ts

@@ -407,13 +407,20 @@ export interface SetupFinishNotificationParams {
   logger: Logger;
 }
 
-type FinishNotificationReason = "finished" | "errored" | "needs permission" | "was closed";
+type FinishNotificationReason =
+  | "finished"
+  | "errored"
+  | "needs permission"
+  | "was closed"
+  | "was canceled";
 
 const finishNotificationEvents = {
   finished: "finished",
   errored: "errored",
   "needs permission": "permission-required",
   "was closed": "closed",
+  // Use the existing failure event so older clients still parse agent-message metadata.
+  "was canceled": "errored",
 } as const;
 
 const FINISH_NOTIFICATION_MESSAGE_LIMIT = 4000;
@@ -568,10 +575,8 @@ export function setupFinishNotification(params: SetupFinishNotificationParams):
       notifySafely("errored");
       return;
     }
-    if (agent.lifecycle === "idle" && hasSeenRunning) {
-      notifySafely("finished");
-      return;
-    }
+    // Idle is published before the terminal stream event for both completion
+    // and cancellation. Let that event identify the outcome instead.
     if (agent.lifecycle === "closed") {
       notifySafely("was closed");
       return;
@@ -600,6 +605,18 @@ export function setupFinishNotification(params: SetupFinishNotificationParams):
         return;
       }
 
+      if (event.event.type === "turn_completed" || event.event.type === "turn_canceled") {
+        // Replacing a turn keeps the child running through the displaced turn's
+        // cancellation. The task settles only when the child becomes idle.
+        if (agentManager.getAgent(childAgentId)?.lifecycle !== "idle") return;
+        if (event.event.type === "turn_completed" && hasSeenRunning) {
+          notifySafely("finished");
+        } else if (event.event.type === "turn_canceled" && hasSeenTurn) {
+          notifySafely("was canceled");
+        }
+        return;
+      }
+
       if (event.event.type === "permission_requested") {
         // A permission pause is an intermediate checkpoint. Forget the run
         // observed before it so an idle state during follow-up startup cannot

packages/server/src/server/agent/mcp-parity.e2e.test.ts

@@ -12,6 +12,8 @@ import { createTestPaseoDaemon, type TestPaseoDaemon } from "../test-utils/paseo
 import { createTestAgentClients } from "../test-utils/fake-agent-client.js";
 import type { AgentClient, AgentProvider, AgentSessionConfig } from "./agent-sdk-types.js";
 import { PARENT_AGENT_ID_LABEL } from "@getpaseo/protocol/agent-labels";
+import { DaemonClient } from "../test-utils/daemon-client.js";
+import { parseAgentMessage } from "./agent-messages/index.js";
 
 interface StructuredContent {
   [key: string]: unknown;
@@ -311,6 +313,167 @@ afterAll(async () => {
 });
 
 describe("Suite A: Core Fixes", () => {
+  test.each([
+    ["Stop", "cancelAgent"],
+    ["Reload", "refreshAgent"],
+  ] as const)(
+    "%s tells the parent that a watched child was canceled",
+    async (_action, method) => {
+      let releaseChild!: () => void;
+      let childReachedGate!: () => void;
+      const heldTurn = new Promise<void>((resolve) => {
+        releaseChild = resolve;
+      });
+      const childAtGate = new Promise<void>((resolve) => {
+        childReachedGate = resolve;
+      });
+      const parentPrompts: string[] = [];
+      const daemon = await createTestPaseoDaemon({
+        agentClients: createTestAgentClients({
+          onStartTurn(prompt, config) {
+            if (config.title === "Watching parent" && typeof prompt === "string")
+              parentPrompts.push(prompt);
+          },
+          async beforeTurnComplete(prompt) {
+            if (
+              typeof prompt === "string" &&
+              parseAgentMessage(prompt).text === "Hold this child turn"
+            ) {
+              childReachedGate();
+              await heldTurn;
+            }
+          },
+        }),
+      });
+      const client = new DaemonClient({
+        url: `ws://127.0.0.1:${daemon.port}/ws`,
+        appVersion: "0.11.2",
+      });
+      let mcp: McpClient | undefined;
+      let unsubscribe: (() => void) | undefined;
+      try {
+        await client.connect();
+        await client.fetchAgents({ subscribe: {} });
+        const parent = await client.createAgent({
+          provider: "claude",
+          cwd: daemon.paseoHome,
+          title: "Watching parent",
+          modeId: "bypassPermissions",
+        });
+        mcp = await createMcpClient(
+          buildExpectedAgentMcpUrl({ host: "127.0.0.1", port: daemon.port, agentId: parent.id }),
+        );
+        const created = await callToolStructured(mcp, "create_agent", {
+          relationship: { kind: "subagent" },
+          workspace: { kind: "current" },
+          title: "Watched child",
+          provider: "codex/gpt-5.4",
+          initialPrompt: "Hold this child turn",
+          notifyOnFinish: true,
+          settings: { modeId: "full-access" },
+        });
+        const childId = str(created.agentId);
+        await childAtGate;
+        expect(daemon.daemon.agentManager.getAgent(childId)?.lifecycle).toBe("running");
+        const terminalEvents: string[] = [];
+        unsubscribe = daemon.daemon.agentManager.subscribe(
+          (event) => {
+            if (
+              event.type === "agent_stream" &&
+              event.agentId === childId &&
+              (event.event.type === "turn_completed" || event.event.type === "turn_canceled")
+            )
+              terminalEvents.push(event.event.type);
+          },
+          { agentId: childId, replayState: false },
+        );
+
+        await client[method](childId);
+        await waitFor({
+          timeoutMs: 10000,
+          label: "parent cancellation notification",
+          check: () => (parentPrompts.length === 1 ? true : null),
+        });
+        const notification = parseAgentMessage(parentPrompts[0]);
+        expect(terminalEvents).toEqual(["turn_canceled"]);
+        expect(notification.source).toEqual({
+          kind: "agent-notification",
+          agentId: childId,
+          title: "Watched child",
+          event: "errored",
+        });
+        expect(notification.text).toContain(`Agent ${childId} (Watched child) was canceled.`);
+        expect(notification.text).not.toContain("finished.");
+        await waitFor({
+          timeoutMs: 10000,
+          label: "parent notification turn drained",
+          check: () =>
+            daemon.daemon.agentManager.getAgent(parent.id)?.lifecycle === "idle" ? true : null,
+        });
+        expect(parentPrompts).toHaveLength(1);
+      } finally {
+        releaseChild();
+        unsubscribe?.();
+        await mcp?.close();
+        await client.close();
+        await daemon.close();
+      }
+    },
+    30000,
+  );
+
+  test.each([
+    { outcome: "finished", prompt: "say done and stop", status: "idle" },
+    { outcome: "errored", prompt: "Emit a turn failure", status: "error" },
+  ])(
+    "a watched child still reports $outcome after send_agent_prompt",
+    async ({ outcome, prompt, status }) => {
+      const childId = await createChildAgent({
+        title: "Follow-up child",
+        settings: { modeId: "bypassPermissions" },
+      });
+      try {
+        await waitFor({
+          timeoutMs: 10000,
+          label: "initial child turn completed",
+          check: () =>
+            daemonHandle.daemon.agentManager.getAgent(childId)?.lifecycle === "idle" ? true : null,
+        });
+        await callToolStructured(agentScopedClient, "send_agent_prompt", {
+          agentId: childId,
+          prompt,
+          notifyOnFinish: true,
+        });
+        const notifications = await waitFor({
+          timeoutMs: 10000,
+          label: `${outcome} notification`,
+          check: () => {
+            const items = daemonHandle.daemon.agentManager
+              .getTimeline(parentAgentId)
+              .filter(
+                (item) => item.type === "tool_call" && item.agentMessage?.sender.id === childId,
+              );
+            return items.length > 0 ? items : null;
+          },
+        });
+        expect(notifications).toEqual([
+          expect.objectContaining({
+            type: "tool_call",
+            agentMessage: {
+              event: outcome,
+              sender: { id: childId, title: "Follow-up child" },
+              text: expect.stringContaining(`(Follow-up child) ${outcome}.`),
+            },
+          }),
+        ]);
+        expect(daemonHandle.daemon.agentManager.getAgent(childId)?.lifecycle).toBe(status);
+      } finally {
+        await archiveAgentIfPresent(childId);
+      }
+    },
+    30000,
+  );
+
   test("AGENT_WAIT_TIMEOUT_MS is 30000", () => {
     expect(AGENT_WAIT_TIMEOUT_MS).toBe(30_000);
   });

packages/server/src/server/agent/mcp-server.test.ts

@@ -4359,6 +4359,10 @@ describe("send_agent_prompt MCP tool", () => {
       await vi.waitFor(() => expect(finishNotifications()).not.toHaveLength(0));
       await new Promise((resolve) => setTimeout(resolve, 100));
       expect(finishNotifications()).toHaveLength(1);
+      expect(parentClient.sessions[0]!.prompts).toHaveLength(1);
+      expect(parseAgentMessage(parentClient.sessions[0]!.prompts[0])).toMatchObject({
+        source: { kind: "agent-notification", agentId: childId, event: "finished" },
+      });
     } finally {
       await removeAgentStateDir(agentManager, storage, workdir);
     }

packages/server/src/server/agent/providers/claude/agent.context-usage.local.e2e.test.ts

@@ -0,0 +1,133 @@
+import { createServer } from "node:http";
+import { mkdir, mkdtemp, rm } from "node:fs/promises";
+import path from "node:path";
+import pino from "pino";
+import { expect, test } from "vitest";
+import { collectSessionTurnEvents } from "../test-utils/session-stream-adapter.js";
+import { ClaudeAgentClient } from "./agent.js";
+
+// Exercise the real Claude Code process against a local Messages API fixture.
+// The input counter's location is the only difference between the two backends.
+test.each([
+  { placement: "start", cacheTokens: 0 },
+  { placement: "delta", cacheTokens: 0 },
+  { placement: "start", cacheTokens: 1_000 },
+  { placement: "delta", cacheTokens: 1_000 },
+])(
+  "counts $placement input and $cacheTokens cached tokens through Claude Code",
+  async ({ placement, cacheTokens }) => {
+    const cwd = await mkdtemp(path.resolve(".claude-context-usage-"));
+    const configDir = path.join(cwd, "config");
+    await mkdir(configDir);
+    let requestCount = 0;
+    const server = createServer(async (request, response) => {
+      for await (const chunk of request) {
+        void chunk;
+      }
+      if (!request.url?.startsWith("/v1/messages")) {
+        response.writeHead(200, { "content-type": "application/json" });
+        response.end("{}");
+        return;
+      }
+      if (request.url.includes("count_tokens")) {
+        response.writeHead(200, { "content-type": "application/json" });
+        response.end(JSON.stringify({ input_tokens: 20_236 }));
+        return;
+      }
+      const inputTokens = 20_236 + requestCount++;
+      response.writeHead(200, { "content-type": "text/event-stream" });
+      const emit = (data: { type: string; [key: string]: unknown }) => {
+        response.write(`event: ${data.type}\ndata: ${JSON.stringify(data)}\n\n`);
+      };
+      emit({
+        type: "message_start",
+        message: {
+          id: `msg_context_usage_${requestCount}`,
+          type: "message",
+          role: "assistant",
+          model: "claude-sonnet-4-6",
+          content: [],
+          stop_reason: null,
+          stop_sequence: null,
+          usage: {
+            input_tokens: placement === "start" ? inputTokens : 0,
+            output_tokens: 0,
+            cache_creation_input_tokens: 0,
+            cache_read_input_tokens: cacheTokens,
+          },
+        },
+      });
+      emit({ type: "content_block_start", index: 0, content_block: { type: "text", text: "" } });
+      emit({ type: "content_block_delta", index: 0, delta: { type: "text_delta", text: "hello" } });
+      emit({ type: "content_block_stop", index: 0 });
+      emit({
+        type: "message_delta",
+        delta: { stop_reason: "end_turn", stop_sequence: null },
+        usage: {
+          output_tokens: 64,
+          ...(placement === "delta" ? { input_tokens: inputTokens } : {}),
+        },
+      });
+      emit({ type: "message_stop" });
+      response.end();
+    });
+    await new Promise<void>((resolve) => server.listen(0, "127.0.0.1", resolve));
+    const address = server.address();
+    if (!address || typeof address === "string") throw new Error("Fixture has no TCP address");
+    const client = new ClaudeAgentClient({
+      logger: pino({ level: "silent" }),
+      runtimeSettings: {
+        env: {
+          ANTHROPIC_BASE_URL: `http://127.0.0.1:${address.port}`,
+          ANTHROPIC_AUTH_TOKEN: "fixture-token",
+          ANTHROPIC_API_KEY: "",
+          CLAUDE_CONFIG_DIR: configDir,
+          CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: "1",
+        },
+      },
+    });
+    const session = await client.createSession(
+      { provider: "claude", cwd, model: "claude-sonnet-4-6" },
+      undefined,
+      { persistSession: false },
+    );
+    try {
+      for (let turn = 0; turn < 2; turn++) {
+        const events = await collectSessionTurnEvents(session, "say hello", {
+          signal: AbortSignal.timeout(20_000),
+        });
+        const expectedTokens = 20_236 + turn + cacheTokens + 64;
+        expect(events).toContainEqual(
+          expect.objectContaining({
+            type: "turn_completed",
+            usage: expect.objectContaining({
+              inputTokens: 20_236 + turn,
+              outputTokens: 64,
+              cachedInputTokens: cacheTokens,
+              contextWindowUsedTokens: expectedTokens,
+            }),
+          }),
+        );
+        expect(events).toContainEqual(
+          expect.objectContaining({
+            type: "usage_updated",
+            usage: expect.objectContaining({ contextWindowUsedTokens: expectedTokens }),
+          }),
+        );
+      }
+      expect(requestCount).toBe(2);
+    } finally {
+      try {
+        await session.close();
+      } finally {
+        try {
+          server.closeAllConnections();
+          await new Promise<void>((resolve) => server.close(() => resolve()));
+        } finally {
+          await rm(cwd, { recursive: true, force: true });
+        }
+      }
+    }
+  },
+  60_000,
+);

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

@@ -2135,13 +2135,15 @@ describe("ClaudeAgentSession context window usage", () => {
   }
 
   function createMessageDeltaEvent(outputTokens: number): Record<string, unknown> {
+    return createMessageDeltaUsageEvent({ output_tokens: outputTokens });
+  }
+
+  function createMessageDeltaUsageEvent(usage: Record<string, unknown>): Record<string, unknown> {
     return {
       type: "stream_event",
       event: {
         type: "message_delta",
-        usage: {
-          output_tokens: outputTokens,
-        },
+        usage,
       },
       session_id: "session-1",
     };
@@ -2887,6 +2889,119 @@ describe("ClaudeAgentSession context window usage", () => {
     }
   });
 
+  test("message_delta input usage replaces an empty message_start count", async () => {
+    // Translating gateways (LiteLLM in front of an OpenAI-compatible backend) do not know the
+    // prompt size when message_start is emitted, so they report input_tokens: 0 there and send
+    // the cumulative counts on message_delta, as the Anthropic Messages API allows.
+    const session = await createSessionForTurns([
+      [
+        createInitMessage(),
+        createMessageStartEvent({
+          input_tokens: 0,
+          cache_creation_input_tokens: 0,
+          cache_read_input_tokens: 0,
+        }),
+        createMessageDeltaUsageEvent({ input_tokens: 20_236, output_tokens: 64 }),
+        createSuccessResult({
+          usage: {
+            input_tokens: 20_236,
+            cache_creation_input_tokens: 0,
+            cache_read_input_tokens: 0,
+            output_tokens: 64,
+            iterations: [],
+          },
+        }),
+      ],
+    ]);
+
+    try {
+      const events = await collectStreamEvents(session);
+
+      expect(events).toContainEqual(
+        expect.objectContaining({
+          type: "usage_updated",
+          provider: "claude",
+          usage: {
+            contextWindowUsedTokens: 20_300,
+          },
+        }),
+      );
+      expect(events).toContainEqual(
+        expect.objectContaining({
+          type: "turn_completed",
+          usage: expect.objectContaining({
+            inputTokens: 20_236,
+            outputTokens: 64,
+            contextWindowUsedTokens: 20_300,
+          }),
+        }),
+      );
+    } finally {
+      await session.close();
+    }
+  });
+
+  test("message_delta without cache counters keeps the message_start cache usage", async () => {
+    const session = await createSessionForTurns([
+      [
+        createInitMessage(),
+        createMessageStartEvent({
+          input_tokens: 5,
+          cache_creation_input_tokens: 0,
+          cache_read_input_tokens: 1_000,
+        }),
+        createMessageDeltaUsageEvent({ input_tokens: 5, output_tokens: 64 }),
+        createSuccessResult(),
+      ],
+    ]);
+
+    try {
+      const events = await collectStreamEvents(session);
+
+      expect(events).toContainEqual(
+        expect.objectContaining({
+          type: "usage_updated",
+          provider: "claude",
+          usage: {
+            contextWindowUsedTokens: 1_069,
+          },
+        }),
+      );
+    } finally {
+      await session.close();
+    }
+  });
+
+  test("message_delta before this request's message_start does not seed usage", async () => {
+    // A canceled request can leave its terminal message_delta queued behind the next turn.
+    // Nothing is known about the new request until its message_start, so that straggler
+    // must not produce a usage_updated event or leak into the next request's counters.
+    const session = await createSessionForTurns([
+      [
+        createInitMessage(),
+        createMessageDeltaUsageEvent({ input_tokens: 20_236, output_tokens: 64 }),
+        createMessageStartEvent({
+          input_tokens: 40,
+          cache_creation_input_tokens: 5,
+          cache_read_input_tokens: 10,
+        }),
+        createMessageDeltaEvent(7),
+        createSuccessResult(),
+      ],
+    ]);
+
+    try {
+      const events = await collectStreamEvents(session);
+
+      const usedTokens = events
+        .filter((event) => event.type === "usage_updated")
+        .map((event) => event.usage.contextWindowUsedTokens);
+      expect(usedTokens).toEqual([55, 62]);
+    } finally {
+      await session.close();
+    }
+  });
+
   test("per-request stream usage is not cumulative across API calls in a turn", async () => {
     const session = await createSessionForTurns([
       [

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

@@ -1855,30 +1855,59 @@ function extractContextWindowSize(modelUsage: unknown): number | undefined {
   return maxContextWindow;
 }
 
-function readStreamRequestInputTokens(event: Record<string, unknown>): number | undefined {
-  const messageUsage = toObjectRecord(toObjectRecord(event.message)?.usage);
-  if (!messageUsage) {
+interface StreamRequestInputUsage {
+  inputTokens: number;
+  cacheCreationInputTokens: number;
+  cacheReadInputTokens: number;
+}
+
+function readUsageCount(usage: Record<string, unknown>, key: string): number | undefined {
+  const value = usage[key];
+  if (typeof value !== "number" || !Number.isFinite(value) || value < 0) {
     return undefined;
   }
-  const usage = messageUsage;
-  const inputTokens =
-    typeof usage.input_tokens === "number" && Number.isFinite(usage.input_tokens)
-      ? usage.input_tokens
-      : undefined;
-  const cacheCreationInputTokens =
-    typeof usage.cache_creation_input_tokens === "number" &&
-    Number.isFinite(usage.cache_creation_input_tokens)
-      ? usage.cache_creation_input_tokens
-      : 0;
-  const cacheReadInputTokens =
-    typeof usage.cache_read_input_tokens === "number" &&
-    Number.isFinite(usage.cache_read_input_tokens)
-      ? usage.cache_read_input_tokens
-      : 0;
-  if (typeof inputTokens !== "number" || inputTokens < 0) {
+  return value;
+}
+
+function readStreamRequestInputUsage(
+  event: Record<string, unknown>,
+): StreamRequestInputUsage | undefined {
+  const usage = toObjectRecord(toObjectRecord(event.message)?.usage);
+  if (!usage) {
     return undefined;
   }
-  return inputTokens + cacheCreationInputTokens + cacheReadInputTokens;
+  const inputTokens = readUsageCount(usage, "input_tokens");
+  if (inputTokens === undefined) {
+    return undefined;
+  }
+  return {
+    inputTokens,
+    cacheCreationInputTokens: readUsageCount(usage, "cache_creation_input_tokens") ?? 0,
+    cacheReadInputTokens: readUsageCount(usage, "cache_read_input_tokens") ?? 0,
+  };
+}
+
+/**
+ * The input counters on `message_delta.usage` are cumulative whole-request totals and are
+ * optional. Mirror the Anthropic SDK's MessageStream: a counter present on the delta replaces
+ * the `message_start` value, a missing counter keeps it. Translating gateways report
+ * `input_tokens: 0` on `message_start` and only know the real count by `message_delta`.
+ */
+function mergeStreamDeltaInputUsage(
+  current: StreamRequestInputUsage,
+  event: Record<string, unknown>,
+): StreamRequestInputUsage {
+  const usage = toObjectRecord(event.usage);
+  if (!usage) {
+    return current;
+  }
+  return {
+    inputTokens: readUsageCount(usage, "input_tokens") ?? current.inputTokens,
+    cacheCreationInputTokens:
+      readUsageCount(usage, "cache_creation_input_tokens") ?? current.cacheCreationInputTokens,
+    cacheReadInputTokens:
+      readUsageCount(usage, "cache_read_input_tokens") ?? current.cacheReadInputTokens,
+  };
 }
 
 function readStreamRequestOutputTokens(event: Record<string, unknown>): number | undefined {
@@ -1958,7 +1987,7 @@ function readClaudeParentToolUseId(message: SDKMessage): string | null {
 
 class ClaudeContextUsageState {
   private contextWindowMaxTokens: number | undefined;
-  private streamRequestInputTokens: number | undefined;
+  private streamRequestInputUsage: StreamRequestInputUsage | undefined;
   private streamRequestOutputTokens: number | undefined;
   private compactedContextWindowUsedTokens: number | undefined;
   private completedResultTurns = 0;
@@ -1968,7 +1997,7 @@ class ClaudeContextUsageState {
   }
 
   beginTurn(): void {
-    this.streamRequestInputTokens = undefined;
+    this.streamRequestInputUsage = undefined;
     this.streamRequestOutputTokens = undefined;
     this.compactedContextWindowUsedTokens = undefined;
   }
@@ -1992,11 +2021,11 @@ class ClaudeContextUsageState {
     }
     const eventType = readTrimmedString(streamEvent.type);
     if (eventType === "message_start") {
-      const inputTokens = readStreamRequestInputTokens(streamEvent);
-      if (typeof inputTokens !== "number") {
+      const inputUsage = readStreamRequestInputUsage(streamEvent);
+      if (!inputUsage) {
         return null;
       }
-      this.streamRequestInputTokens = inputTokens;
+      this.streamRequestInputUsage = inputUsage;
       this.streamRequestOutputTokens = 0;
     } else if (eventType === "message_delta") {
       const outputTokens = readStreamRequestOutputTokens(streamEvent);
@@ -2004,6 +2033,12 @@ class ClaudeContextUsageState {
         return null;
       }
       this.streamRequestOutputTokens = outputTokens;
+      if (this.streamRequestInputUsage) {
+        this.streamRequestInputUsage = mergeStreamDeltaInputUsage(
+          this.streamRequestInputUsage,
+          streamEvent,
+        );
+      }
     } else {
       return null;
     }
@@ -2050,13 +2085,15 @@ class ClaudeContextUsageState {
   }
 
   private streamUsedTokens(): number | undefined {
-    if (
-      typeof this.streamRequestInputTokens !== "number" ||
-      typeof this.streamRequestOutputTokens !== "number"
-    ) {
+    const inputUsage = this.streamRequestInputUsage;
+    if (!inputUsage || typeof this.streamRequestOutputTokens !== "number") {
       return undefined;
     }
-    const usedTokens = this.streamRequestInputTokens + this.streamRequestOutputTokens;
+    const usedTokens =
+      inputUsage.inputTokens +
+      inputUsage.cacheCreationInputTokens +
+      inputUsage.cacheReadInputTokens +
+      this.streamRequestOutputTokens;
     return usedTokens > 0 ? usedTokens : undefined;
   }
 
@@ -2075,7 +2112,7 @@ class ClaudeContextUsageState {
   }
 
   buildCompactionUsageEvent(postTokens: number | undefined): AgentStreamEvent {
-    this.streamRequestInputTokens = undefined;
+    this.streamRequestInputUsage = undefined;
     this.streamRequestOutputTokens = undefined;
     this.compactedContextWindowUsedTokens = postTokens;
     const usage: AgentUsage = {};

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

@@ -1943,6 +1943,48 @@ describe("PiRpcAgentSession", () => {
     expect(session.describePersistence()?.metadata?.thinkingOptionId).toBe("off");
   });
 
+  test.each(["high", "off", "max"] as const)(
+    "publishes an extension's thinking change to %s before refreshing state",
+    async (level) => {
+      const { pi, session } = await createSession();
+      onTestFinished(() => session.close());
+      const changes: AgentStreamEvent[] = [];
+      session.subscribe((event) => {
+        if (event.type === "thinking_option_changed") {
+          expect(session.describePersistence()?.metadata?.thinkingOptionId).toBe(level);
+          changes.push(event);
+        }
+      });
+      const runtime = pi.latestSession();
+      runtime.state = { ...runtime.state, thinkingLevel: level };
+      runtime.emit({ type: "thinking_level_changed", level });
+
+      expect(changes).toEqual([
+        { type: "thinking_option_changed", provider: "pi", thinkingOptionId: level },
+      ]);
+      expect(session.describePersistence()?.metadata?.thinkingOptionId).toBe(level);
+      await expect(session.getRuntimeInfo()).resolves.toMatchObject({ thinkingOptionId: level });
+    },
+  );
+
+  test.each([undefined, null, "invalid", 123])(
+    "ignores a thinking change with invalid level %s",
+    async (level) => {
+      const { pi, session } = await createSession();
+      onTestFinished(() => session.close());
+      const initialThinking = session.describePersistence()?.metadata?.thinkingOptionId;
+      const changes: AgentStreamEvent[] = [];
+      session.subscribe((event) => {
+        if (event.type === "thinking_option_changed") changes.push(event);
+      });
+
+      pi.latestSession().emit({ type: "thinking_level_changed", level });
+
+      expect(changes).toEqual([]);
+      expect(session.describePersistence()?.metadata?.thinkingOptionId).toBe(initialThinking);
+    },
+  );
+
   test("surfaces state refresh failures after a Pi thinking update", async () => {
     const { pi, session } = await createSession();
     onTestFinished(() => session.close());

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

@@ -1005,6 +1005,8 @@ function isProcessExitEvent(
 
 function isPiAgentSessionEvent(event: PiRuntimeEvent): event is PiAgentSessionEvent {
   switch (event.type) {
+    case "thinking_level_changed":
+      return typeof event.level === "string" && normalizePiThinkingOption(event.level) !== null;
     case "agent_start":
     case "turn_start":
     case "message_start":
@@ -2136,6 +2138,15 @@ export class PiRpcAgentSession implements AgentSession {
     }
 
     switch (event.type) {
+      case "thinking_level_changed":
+        this.state = { ...this.state, thinkingLevel: event.level };
+        this.config.thinkingOptionId = event.level;
+        this.emit({
+          type: "thinking_option_changed",
+          provider: this.provider,
+          thinkingOptionId: event.level,
+        });
+        return;
       case "agent_start":
         this.activeTurnStarted = true;
         this.clearNoTurnBuffers();

packages/server/src/server/agent/providers/pi/extensions/tintinweb-pi-subagents/index.test.ts

@@ -2,6 +2,7 @@ import { describe, expect, test } from "vitest";
 import { fileURLToPath } from "node:url";
 import { createPiExtensionHost } from "../index.js";
 import { readSubagentFixture, verifySubagentFixture } from "../subagent-fixture-test.js";
+import type { PiAgentMessage } from "../../rpc-types.js";
 
 describe("@tintinweb/pi-subagents adapter", () => {
   test("exposes the background output file while the child is running", () => {
@@ -22,6 +23,27 @@ describe("@tintinweb/pi-subagents adapter", () => {
     ]);
     expect(mapping?.childSessions).toEqual([{ id: "call-1", file: "/tmp/child.output" }]);
   });
+  test("marks a foreground child that wrapped up at its turn limit as completed", () => {
+    const mapping = createPiExtensionHost().mapToolCall({
+      callId: "call-1",
+      toolName: "Agent",
+      args: { subagent_type: "Explore", prompt: "Inspect" },
+      status: "completed",
+      result: {
+        details: { agentId: "native-1", status: "steered" },
+        content: [{ type: "text", text: "Wrapped up (turn limit)" }],
+      },
+    });
+    expect(mapping?.subagents).toEqual([
+      expect.objectContaining({ id: "call-1", status: "completed" }),
+    ]);
+    expect(mapping?.detail).toEqual({
+      type: "sub_agent",
+      subAgentType: "Explore",
+      description: "Inspect",
+      log: "Wrapped up (turn limit)",
+    });
+  });
   test("maps captured foreground lifecycle live and on replay", async () => {
     const events = await verifySubagentFixture(
       readSubagentFixture(new URL("./fixtures/foreground.json", import.meta.url)),
@@ -65,6 +87,134 @@ describe("@tintinweb/pi-subagents adapter", () => {
       call_277179: "completed",
     });
   });
+  test.each(["subagent-notification", "subagent-update"])(
+    "completes turn-limited children in a grouped %s",
+    (customType) => {
+      const host = createPiExtensionHost();
+      for (const id of ["1", "2", "3"]) {
+        host.mapToolCall({
+          callId: `call-${id}`,
+          toolName: "Agent",
+          args: { subagent_type: "Explore", prompt: "Inspect" },
+          status: "completed",
+          result: { details: { agentId: `native-${id}`, status: "background" } },
+        });
+      }
+      const mapping = host.mapCustomMessage({
+        role: "custom",
+        customType,
+        content: "Wrapped up (turn limit)",
+        display: true,
+        timestamp: 0,
+        details: {
+          id: "native-1",
+          status: "steered",
+          others: [
+            { id: "native-2", status: "steered" },
+            { id: "native-3", status: "running" },
+          ],
+        },
+      });
+      expect(mapping?.subagents).toEqual([
+        expect.objectContaining({ id: "call-1", status: "completed" }),
+        expect.objectContaining({ id: "call-2", status: "completed" }),
+        expect.objectContaining({ id: "call-3", status: "running" }),
+      ]);
+    },
+  );
+  test.each(["get_subagent_result", "steer_subagent"])(
+    "completes a turn-limited child when collected through %s",
+    (toolName) => {
+      const host = createPiExtensionHost();
+      host.mapToolCall({
+        callId: "call-1",
+        toolName: "Agent",
+        args: { subagent_type: "Explore", prompt: "Inspect" },
+        status: "completed",
+        result: { details: { agentId: "native-1", status: "background" } },
+      });
+      const mapping = host.mapToolCall({
+        callId: "followup-1",
+        toolName,
+        args: { agent_id: "native-1" },
+        status: "completed",
+        result: {
+          details: { agentId: "native-1", status: "steered" },
+          content: [{ type: "text", text: "Wrapped up (turn limit)" }],
+        },
+      });
+      expect(mapping?.subagents).toEqual([{ type: "upsert", id: "call-1", status: "completed" }]);
+      expect(mapping?.detail).toEqual({
+        type: "sub_agent",
+        description: undefined,
+        log: "Wrapped up (turn limit)",
+      });
+    },
+  );
+  test.each([
+    ["background", "running"],
+    ["queued", "running"],
+    ["running", "running"],
+    ["completed", "completed"],
+    ["error", "failed"],
+    ["aborted", "canceled"],
+    ["stopped", "canceled"],
+    ["unknown", "running"],
+  ])("preserves the mapping of %s to %s", (status, expected) => {
+    const mapping = createPiExtensionHost().mapToolCall({
+      callId: "call-1",
+      toolName: "Agent",
+      args: { subagent_type: "Explore", prompt: "Inspect" },
+      status: "completed",
+      result: { details: { agentId: "native-1", status } },
+    });
+    expect(mapping?.subagents).toEqual([
+      expect.objectContaining({ id: "call-1", status: expected }),
+    ]);
+  });
+  test("completes a turn-limited background child live and on history replay", async () => {
+    const path = new URL("./fixtures/background.json", import.meta.url);
+    const source = readSubagentFixture(path);
+    const notification = source.messages.find((message) => message.role === "custom");
+    const notificationDetails = notification?.details;
+    if (
+      !notificationDetails ||
+      typeof notificationDetails !== "object" ||
+      !("outputFile" in notificationDetails) ||
+      typeof notificationDetails.outputFile !== "string"
+    ) {
+      throw new Error("Background fixture is missing its child output file");
+    }
+    const fixture = readSubagentFixture(path, {
+      from: notificationDetails.outputFile,
+      to: fileURLToPath(new URL("./fixtures/child-session.jsonl", import.meta.url)),
+    });
+    function wrapUp(message: PiAgentMessage): PiAgentMessage {
+      if (message.role !== "custom") return message;
+      const details = message.details;
+      if (!details || typeof details !== "object") {
+        throw new Error("Background fixture is missing its notification details");
+      }
+      return {
+        ...message,
+        content: "Wrapped up (turn limit)",
+        details: { ...details, status: "steered" },
+      };
+    }
+    const events = await verifySubagentFixture({
+      ...fixture,
+      events: fixture.events.map((event) =>
+        event.type === "message_end" ? { ...event, message: wrapUp(event.message) } : event,
+      ),
+      messages: fixture.messages.map(wrapUp),
+    });
+    expect(
+      events
+        .filter((event) => event.event.type === "upsert")
+        .map((event) => (event.event.type === "upsert" ? event.event.status : null)),
+    ).toEqual(["running", "running", "completed"]);
+    expect(events.filter((event) => event.event.type === "timeline").length).toBeGreaterThan(0);
+  });
   test("declines foreign Agent results", () => {
     expect(
       createPiExtensionHost().mapToolCall({

packages/server/src/server/agent/providers/pi/extensions/tintinweb-pi-subagents/index.ts

@@ -33,7 +33,8 @@ const Notification = NotificationEntry.extend({
   others: z.array(NotificationEntry).optional(),
 });
 const status = (value: string): "running" | "completed" | "failed" | "canceled" => {
-  if (value === "completed") return "completed";
+  // A soft turn-limit wrap-up has finished; it is not an in-flight steering request.
+  if (value === "completed" || value === "steered") return "completed";
   if (value === "error") return "failed";
   if (value === "aborted" || value === "stopped") return "canceled";
   return "running";

packages/server/src/server/agent/providers/pi/rpc-types.ts

@@ -160,6 +160,7 @@ export type PiAssistantMessageEvent =
   | { type: "start" | "text_start" | "text_end" | "thinking_start" | "thinking_end" | "done" };
 
 export type PiAgentSessionEvent =
+  | { type: "thinking_level_changed"; level: PiThinkingLevel }
   | { type: "agent_start" }
   | { type: "turn_start" }
   | { type: "message_start"; message: PiAgentMessage }

packages/server/src/server/agent/tools/paseo-tools.ts

@@ -112,7 +112,7 @@ export interface PaseoToolHostDependencies {
   github?: ForgeService;
   workspaceGitService?: Pick<
     WorkspaceGitService,
-    "getSnapshot" | "listWorktrees" | "resolveRepoRoot"
+    "getSnapshot" | "listWorktrees" | "resolveRepoRoot" | "invalidateWorktrees"
   >;
   findWorkspaceIdForCwd?: ArchiveDependencies["findWorkspaceIdForCwd"];
   listActiveWorkspaces?: ArchiveDependencies["listActiveWorkspaces"];

packages/server/src/server/daemon-e2e/filesystem.e2e.test.ts

@@ -23,6 +23,154 @@ afterEach(async () => {
 }, 60000);
 
 describe("file explorer", () => {
+  test.each(["..", "..."])(
+    "workspace suggestions resolve exact paths starting with %s",
+    async (prefix) => {
+      const cwd = tmpCwd();
+      const directoryName = `${prefix}docs`;
+      const nestedPath = `${directoryName}/notes.md`;
+      const fileName = `${prefix}notes.md`;
+      try {
+        mkdirSync(path.join(cwd, directoryName));
+        writeFileSync(path.join(cwd, nestedPath), "nested payload\n");
+        writeFileSync(path.join(cwd, fileName), "direct payload\n");
+        const file = await ctx.client.readFile(cwd, nestedPath);
+        expect(new TextDecoder().decode(file.bytes)).toBe("nested payload\n");
+
+        const nestedEntry = { path: nestedPath, kind: "file" };
+        const entries = [
+          nestedEntry,
+          { path: directoryName, kind: "directory" },
+          { path: fileName, kind: "file" },
+        ];
+        const cases = entries.flatMap((entry) => [
+          { query: `./${entry.path}`, entry },
+          { query: path.resolve(cwd, entry.path), entry },
+        ]);
+        cases.unshift({ query: nestedPath, entry: nestedEntry });
+        for (const { query, entry } of cases) {
+          const response = await ctx.client.getDirectorySuggestions({
+            cwd,
+            query,
+            limit: 1,
+            includeFiles: true,
+            includeDirectories: true,
+            matchMode: "suffix",
+          });
+          expect(response.error).toBeNull();
+          expect(response.entries).toEqual([entry]);
+        }
+      } finally {
+        rmSync(cwd, { recursive: true, force: true });
+      }
+    },
+  );
+
+  test("workspace suggestions exclude exact parent and sibling paths", async () => {
+    const directory = tmpCwd();
+    const cwd = path.join(directory, "workspace");
+    const sibling = path.join(directory, "workspace-other");
+    try {
+      mkdirSync(cwd);
+      mkdirSync(sibling);
+      writeFileSync(path.join(cwd, "visible.txt"), "inside payload\n");
+      writeFileSync(path.join(sibling, "outside.txt"), "outside payload\n");
+      for (const query of [
+        "./..",
+        "../workspace-other/outside.txt",
+        path.join(sibling, "outside.txt"),
+      ]) {
+        const response = await ctx.client.getDirectorySuggestions({
+          cwd,
+          query,
+          limit: 1,
+          includeFiles: true,
+          includeDirectories: true,
+          matchMode: "suffix",
+        });
+        expect(response.error).toBeNull();
+        expect(response.entries).toEqual([]);
+      }
+      const control = await ctx.client.getDirectorySuggestions({
+        cwd,
+        query: "./visible.txt",
+        limit: 1,
+        includeFiles: true,
+        includeDirectories: false,
+        matchMode: "suffix",
+      });
+      expect(control.error).toBeNull();
+      expect(control.entries).toEqual([{ path: "visible.txt", kind: "file" }]);
+    } finally {
+      rmSync(directory, { recursive: true, force: true });
+    }
+  });
+
+  test.each([
+    { description: "a long ASCII name", fileName: `${"a".repeat(236)}.txt` },
+    { description: "an ordinary name", fileName: "notes.txt" },
+    { description: "a long Unicode name", fileName: `${"文".repeat(76)}.txt` },
+  ])("saves text files with $description", async ({ fileName }) => {
+    const cwd = tmpCwd();
+    try {
+      const created = await ctx.client.createFileEntry({
+        cwd,
+        parentPath: ".",
+        name: fileName,
+        kind: "file",
+      });
+      expect(created).toMatchObject({ path: fileName, success: true, error: null });
+      writeFileSync(path.join(cwd, fileName), "original payload\n");
+      const initial = await ctx.client.readFile(cwd, fileName);
+
+      const saved = await ctx.client.writeFile({
+        cwd,
+        path: fileName,
+        content: "saved payload\n",
+        expectedModifiedAt: initial.modifiedAt,
+        expectedRevision: initial.revision,
+      });
+      expect(saved).toMatchObject({ status: "written", size: 14 });
+      const after = await ctx.client.readFile(cwd, fileName);
+      expect(after.path).toBe(fileName);
+      expect(new TextDecoder().decode(after.bytes)).toBe("saved payload\n");
+
+      const staleSave = await ctx.client.writeFile({
+        cwd,
+        path: fileName,
+        content: "stale payload\n",
+        expectedModifiedAt: initial.modifiedAt,
+        expectedRevision: initial.revision,
+      });
+      expect(staleSave).toMatchObject({
+        status: "conflict",
+        version: {
+          status: "ready",
+          path: fileName,
+          size: after.size,
+          modifiedAt: after.modifiedAt,
+          revision: after.revision,
+        },
+      });
+      const afterConflict = await ctx.client.readFile(cwd, fileName);
+      expect(new TextDecoder().decode(afterConflict.bytes)).toBe("saved payload\n");
+
+      const secondSave = await ctx.client.writeFile({
+        cwd,
+        path: fileName,
+        content: "second payload\n",
+        expectedModifiedAt: afterConflict.modifiedAt,
+        expectedRevision: afterConflict.revision,
+      });
+      expect(secondSave).toMatchObject({ status: "written", size: 15 });
+      const final = await ctx.client.readFile(cwd, fileName);
+      expect(new TextDecoder().decode(final.bytes)).toBe("second payload\n");
+      expect(readdirSync(cwd)).toEqual([fileName]);
+    } finally {
+      rmSync(cwd, { recursive: true, force: true });
+    }
+  });
+
   test.each([
     {
       query: "implementation",

packages/server/src/server/daemon-e2e/git-operations.e2e.test.ts

@@ -1,5 +1,14 @@
 import { test, expect, beforeEach, afterEach } from "vitest";
-import { mkdtempSync, writeFileSync, existsSync, rmSync, readFileSync, realpathSync } from "fs";
+import {
+  mkdtempSync,
+  writeFileSync,
+  existsSync,
+  rmSync,
+  readFileSync,
+  realpathSync,
+  mkdirSync,
+} from "fs";
+import { execFileSync } from "node:child_process";
 import { tmpdir } from "os";
 import path from "path";
 import { createDaemonTestContext, type DaemonTestContext } from "../test-utils/index.js";
@@ -152,6 +161,78 @@ afterEach(async () => {
   await ctx.cleanup();
 }, 60000);
 
+interface GitCommandOptions {
+  cwd: string;
+  args: string[];
+}
+
+async function mergeFeatureIntoBaseWorktree(baseName: string): Promise<void> {
+  const directory = realpathSync(tmpCwd());
+  const base = path.join(directory, baseName);
+  const feature = path.join(directory, "feature");
+  function git({ cwd, args }: GitCommandOptions): string {
+    return execFileSync("git", args, { cwd, encoding: "utf8", stdio: "pipe" });
+  }
+  try {
+    mkdirSync(base);
+    git({ cwd: base, args: ["init", "-b", "main"] });
+    git({ cwd: base, args: ["config", "user.name", "Paseo Test"] });
+    git({ cwd: base, args: ["config", "user.email", "test@paseo.local"] });
+    git({ cwd: base, args: ["config", "commit.gpgsign", "false"] });
+    git({ cwd: base, args: ["config", "core.autocrlf", "false"] });
+    git({ cwd: base, args: ["commit", "--allow-empty", "-m", "base"] });
+    git({ cwd: base, args: ["worktree", "add", "-b", "feature", feature] });
+    writeFileSync(path.join(feature, "feature.txt"), "feature payload\n");
+    git({ cwd: feature, args: ["add", "feature.txt"] });
+    git({ cwd: feature, args: ["commit", "-m", "feature"] });
+    const featureCommit = git({ cwd: feature, args: ["rev-parse", "HEAD"] }).trim();
+
+    const merged = await ctx.client.checkoutMerge(feature, { baseRef: "main" });
+    expect(merged).toMatchObject({ success: true, error: null });
+    expect(git({ cwd: base, args: ["rev-parse", "HEAD"] }).trim()).toBe(featureCommit);
+    expect(readFileSync(path.join(base, "feature.txt"), "utf8")).toBe("feature payload\n");
+    expect(git({ cwd: feature, args: ["symbolic-ref", "--short", "HEAD"] }).trim()).toBe("feature");
+  } finally {
+    rmSync(directory, { recursive: true, force: true });
+  }
+}
+
+test.skipIf(isPlatform("win32")).each(["base\ncheckout", "base "])(
+  "merges into a base worktree whose path preserves %j",
+  mergeFeatureIntoBaseWorktree,
+);
+
+test.each(["base checkout", "中文 checkout"])(
+  "merges into a base worktree named %j",
+  mergeFeatureIntoBaseWorktree,
+);
+
+test("merges into a local base branch without another worktree", async () => {
+  const cwd = realpathSync(tmpCwd());
+  function git(args: string[]): string {
+    return execFileSync("git", args, { cwd, encoding: "utf8", stdio: "pipe" });
+  }
+  try {
+    git(["init", "-b", "main"]);
+    git(["config", "user.name", "Paseo Test"]);
+    git(["config", "user.email", "test@paseo.local"]);
+    git(["config", "commit.gpgsign", "false"]);
+    git(["commit", "--allow-empty", "-m", "base"]);
+    git(["checkout", "-b", "feature"]);
+    writeFileSync(path.join(cwd, "feature.txt"), "feature payload\n");
+    git(["add", "feature.txt"]);
+    git(["commit", "-m", "feature"]);
+    const featureCommit = git(["rev-parse", "HEAD"]).trim();
+
+    const merged = await ctx.client.checkoutMerge(cwd, { baseRef: "main" });
+    expect(merged).toMatchObject({ success: true, error: null });
+    expect(git(["rev-parse", "main"]).trim()).toBe(featureCommit);
+    expect(git(["symbolic-ref", "--short", "HEAD"]).trim()).toBe("feature");
+  } finally {
+    rmSync(cwd, { recursive: true, force: true });
+  }
+});
+
 test("returns diff for modified file in git repo", async () => {
   const cwd = tmpCwd();
 

packages/server/src/server/daemon-e2e/project-path-spaces.e2e.test.ts

@@ -0,0 +1,73 @@
+import { execFileSync } from "node:child_process";
+import { mkdtempSync, realpathSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { beforeEach, expect, onTestFinished, test } from "vitest";
+import { DaemonClient } from "../test-utils/daemon-client.js";
+import { createTestPaseoDaemon } from "../test-utils/paseo-daemon.js";
+
+// Windows does not preserve trailing spaces in folder names.
+const testOnPosix = test.skipIf(process.platform === "win32");
+
+let client: DaemonClient;
+let repoDir: string;
+let projectId: string;
+
+beforeEach(async () => {
+  const root = realpathSync(mkdtempSync(join(tmpdir(), "paseo-project-path-spaces-")));
+  onTestFinished(() => rmSync(root, { recursive: true, force: true }));
+  repoDir = join(root, "repo ");
+  execFileSync("git", ["init", "-b", "main", repoDir], { stdio: "pipe" });
+  execFileSync(
+    "git",
+    [
+      "-c",
+      "user.name=Paseo Test",
+      "-c",
+      "user.email=test@getpaseo.local",
+      "-c",
+      "commit.gpgsign=false",
+      "commit",
+      "--allow-empty",
+      "-m",
+      "initial",
+    ],
+    { cwd: repoDir, stdio: "pipe" },
+  );
+  const daemon = await createTestPaseoDaemon();
+  onTestFinished(() => daemon.close());
+  client = new DaemonClient({ url: `ws://127.0.0.1:${daemon.port}/ws` });
+  const testClient = client;
+  onTestFinished(() => testClient.close());
+  await client.connect();
+  const added = await client.addProject(repoDir);
+  expect(added.error).toBeNull();
+  expect(added.project?.projectRootPath).toBe(repoDir);
+  projectId = added.project!.projectId;
+});
+
+testOnPosix("a project folder ending in a space keeps its Git status", async () => {
+  const opened = await client.createWorkspace({
+    source: { kind: "directory", path: repoDir, projectId },
+  });
+  expect(opened.error).toBeNull();
+  expect(opened.workspace?.workspaceDirectory).toBe(repoDir);
+  const status = await client.getCheckoutStatus(repoDir);
+  expect(status.isGit).toBe(true);
+  expect(status.repoRoot).toBe(repoDir);
+  expect(status.currentBranch).toBe("main");
+});
+
+testOnPosix("a project folder ending in a space can create a worktree", async () => {
+  const created = await client.createWorkspace({
+    source: {
+      kind: "worktree",
+      projectId,
+      action: "branch-off",
+      branchName: "feature/spaces",
+      baseBranch: "main",
+    },
+  });
+  expect(created.error).toBeNull();
+  expect(created.workspace?.gitRuntime?.currentBranch).toBe("feature/spaces");
+});

packages/server/src/server/file-explorer/service.ts

@@ -489,7 +489,7 @@ export async function writeExplorerFile({
 
   const temporaryPath = path.join(
     path.dirname(filePath.resolvedPath),
-    `.${path.basename(filePath.resolvedPath)}.paseo-${randomUUID()}.tmp`,
+    `.paseo-${randomUUID()}.tmp`,
   );
   let temporaryHandle: FileHandle | null = null;
   try {

packages/server/src/server/test-utils/workspace-git-service-stub.ts

@@ -55,6 +55,7 @@ export function createNoopWorkspaceGitService(
     suggestBranchesForCwd: async () => [],
     listStashes: async () => [],
     listWorktrees: async () => [],
+    invalidateWorktrees: () => {},
     getProjectSlug: async (cwd: string) => {
       const snapshot = createNoGitWorkspaceRuntimeSnapshot(cwd);
       return deriveProjectSlug(cwd, snapshot.git.isGit ? snapshot.git.remoteUrl : null);

packages/server/src/server/websocket-server.ts

@@ -246,6 +246,7 @@ function createFallbackWorkspaceGitService(): WorkspaceGitService {
     suggestBranchesForCwd: async () => [],
     listStashes: async () => [],
     listWorktrees: async () => [],
+    invalidateWorktrees: () => {},
     getProjectSlug: async (cwd: string) => {
       const snapshot = createFallbackWorkspaceGitSnapshot(cwd);
       return deriveProjectSlug(cwd, snapshot.git.isGit ? snapshot.git.remoteUrl : null);

packages/server/src/server/workspace-archive-record-scoped.e2e.test.ts

@@ -1,10 +1,13 @@
-import { execFileSync, spawn } from "node:child_process";
+import { execFile, execFileSync, spawn } from "node:child_process";
 import { existsSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { promisify } from "node:util";
 import { afterEach, beforeEach, expect, test } from "vitest";
 
 import { getFullAccessConfig } from "./daemon-e2e/agent-configs.js";
+import { createWorktree } from "../utils/worktree.js";
 import {
   createDaemonTestContext,
   DaemonClient,
@@ -54,6 +57,32 @@ function createGitRepo(): string {
   return repoDir;
 }
 
+async function runCli(args: string[], cwd: string): Promise<string> {
+  const result = await promisify(execFile)(
+    process.execPath,
+    [
+      "--conditions=source",
+      "--import",
+      import.meta.resolve("tsx"),
+      fileURLToPath(new URL("../../../cli/src/index.ts", import.meta.url)),
+      "--host",
+      `127.0.0.1:${ctx.daemon.port}`,
+      ...args,
+    ],
+    {
+      cwd,
+      env: {
+        ...Object.fromEntries(
+          Object.entries(process.env).filter(([key]) => !key.startsWith("PASEO_")),
+        ),
+        PASEO_HOME: ctx.daemon.paseoHome,
+      },
+      timeout: 20000,
+    },
+  );
+  return result.stdout;
+}
+
 async function createLocalWorkspace(cwd: string, title: string): Promise<string> {
   const result = await ctx.client.createWorkspace({
     source: { kind: "directory", path: cwd },
@@ -248,6 +277,78 @@ test("renaming a workspace updates every subscribed client", async () => {
   }
 });
 
+test.each(["worktree", "workspace"] as const)(
+  "%s archive immediately removes the deleted worktree from a warm CLI listing",
+  async (command) => {
+    const repoDir = createGitRepo();
+    const created = await ctx.client.createWorkspace({
+      source: {
+        kind: "worktree",
+        cwd: repoDir,
+        worktreeSlug: "cached-worktree",
+        baseBranch: "main",
+      },
+    });
+    const workspace = created.workspace;
+    if (!workspace?.workspaceDirectory) {
+      throw new Error(created.error ?? "Failed to create worktree workspace");
+    }
+    const worktreePath = workspace.workspaceDirectory;
+    const name = path.basename(worktreePath);
+    const before = JSON.parse(await runCli(["worktree", "ls", "--json"], repoDir));
+    expect(before).toEqual([expect.objectContaining({ name, cwd: worktreePath })]);
+
+    await runCli(
+      [command, "archive", command === "worktree" ? name : workspace.id, "--json"],
+      repoDir,
+    );
+    expect(existsSync(worktreePath)).toBe(false);
+    expect(
+      execFileSync("git", ["worktree", "list", "--porcelain"], { cwd: repoDir }).toString(),
+    ).not.toContain(worktreePath);
+    const after = JSON.parse(await runCli(["worktree", "ls", "--json"], repoDir));
+    console.log(
+      `${command} archive: warm listing=${JSON.stringify(before)}\nimmediate listing=${JSON.stringify(after)}`,
+    );
+    expect(after).toEqual([]);
+  },
+  60000,
+);
+
+test("archiving an unregistered worktree in a bare repo clears the main checkout listing", async () => {
+  const sourceRepo = createGitRepo();
+  const repoRoot = makeTempDir("workspace-archive-bare-");
+  const bareRepo = path.join(repoRoot, "repo.git");
+  const mainCheckout = path.join(repoRoot, "main");
+  execFileSync("git", ["clone", "--bare", sourceRepo, bareRepo], { stdio: "pipe" });
+  execFileSync("git", ["worktree", "add", mainCheckout, "main"], {
+    cwd: bareRepo,
+    stdio: "pipe",
+  });
+  const { worktreePath } = await createWorktree({
+    cwd: mainCheckout,
+    source: { kind: "branch-off", baseBranch: "main", branchName: "cached-bare-worktree" },
+    worktreeSlug: "cached-bare-worktree",
+    runSetup: false,
+    paseoHome: ctx.daemon.paseoHome,
+  });
+  expect(await activeWorkspaceIds()).toEqual(new Set());
+  const name = path.basename(worktreePath);
+  const before = JSON.parse(await runCli(["worktree", "ls", "--json"], mainCheckout));
+  expect(before).toEqual([expect.objectContaining({ name, cwd: worktreePath })]);
+
+  await runCli(["worktree", "archive", name, "--json"], mainCheckout);
+  expect(existsSync(worktreePath)).toBe(false);
+  expect(
+    execFileSync("git", ["worktree", "list", "--porcelain"], { cwd: mainCheckout }).toString(),
+  ).not.toContain(worktreePath);
+  const after = JSON.parse(await runCli(["worktree", "ls", "--json"], mainCheckout));
+  console.log(
+    `bare repo archive: warm listing=${JSON.stringify(before)}\nimmediate listing=${JSON.stringify(after)}`,
+  );
+  expect(after).toEqual([]);
+}, 60000);
+
 test("archiving the last reference to a worktree removes it from disk regardless of the disk flag", async () => {
   const repoDir = createGitRepo();
 

packages/server/src/server/workspace-archive-service.test.ts

@@ -140,7 +140,8 @@ function createArchiveDeps(input: ArchiveDepsInput): ArchiveTestDependencies {
     github: createGitHubServiceStub(),
     workspaceGitService: {
       getSnapshot: vi.fn(async () => null),
-    } as unknown as Pick<WorkspaceGitService, "getSnapshot">,
+      invalidateWorktrees: () => {},
+    } as unknown as Pick<WorkspaceGitService, "getSnapshot" | "invalidateWorktrees">,
     agentManager: {
       listAgents: () => [],
       getAgent: () => null,
@@ -617,28 +618,37 @@ describe("archiveByScope", () => {
     expect(deps.emitWorkspaceUpdatesForWorkspaceIds).not.toHaveBeenCalled();
   });
 
-  test("worktree scope removes an owned directory with zero matching records", async () => {
-    const { tempDir, repoDir } = createGitRepo();
-    const paseoHome = path.join(tempDir, ".paseo");
-    const worktree = await createPaseoOwnedWorktree(repoDir, paseoHome, "zero-records");
+  test.each(["intact", "missing"] as const)(
+    "worktree scope removes an owned directory with zero matching records and %s Git administration",
+    async (gitAdministration) => {
+      const { tempDir, repoDir } = createGitRepo();
+      const paseoHome = path.join(tempDir, ".paseo");
+      const worktree = await createPaseoOwnedWorktree(repoDir, paseoHome, "zero-records");
+      if (gitAdministration === "missing") {
+        const gitDir = execFileSync("git", ["rev-parse", "--absolute-git-dir"], {
+          cwd: worktree.worktreePath,
+        })
+          .toString()
+          .trim();
+        rmSync(gitDir, { recursive: true, force: true });
+      }
+      const dependencies = createArchiveDeps({ paseoHome, activeWorkspaces: [] });
+      const invalidateWorktrees = vi.fn();
+      dependencies.workspaceGitService.invalidateWorktrees = invalidateWorktrees;
 
-    const result = await archiveByScope(
-      createArchiveDeps({
-        paseoHome,
-        activeWorkspaces: [],
-      }),
-      {
+      const result = await archiveByScope(dependencies, {
         scope: { kind: "worktree", targetPath: worktree.worktreePath },
         requestId: "req-zero-records",
-      },
-    );
+      });
 
-    assertArchiveResult(result, {
-      archivedWorkspaceIds: [],
-      removedDirectory: true,
-    });
-    expect(existsSync(worktree.worktreePath)).toBe(false);
-  });
+      assertArchiveResult(result, {
+        archivedWorkspaceIds: [],
+        removedDirectory: true,
+      });
+      expect(existsSync(worktree.worktreePath)).toBe(false);
+      expect(invalidateWorktrees).toHaveBeenCalledTimes(1);
+    },
+  );
 
   test("marks archiving, emits an upsert carrying the archiving state, then clears it and emits a remove", async () => {
     const { tempDir, repoDir } = createGitRepo();

packages/server/src/server/workspace-archive-service.ts

@@ -32,7 +32,7 @@ export interface ArchiveDependencies {
   // Base directory that may hold worktrees across repositories.
   paseoWorktreesBaseRoot?: string;
   github: ForgeService;
-  workspaceGitService: Pick<WorkspaceGitService, "getSnapshot">;
+  workspaceGitService: Pick<WorkspaceGitService, "getSnapshot" | "invalidateWorktrees">;
   agentManager: Pick<AgentManager, "listAgents" | "getAgent" | "archiveAgent" | "archiveSnapshot">;
   agentStorage: Pick<AgentStorage, "listByWorkspace">;
   // Resolves the worktree at a path to its workspaceId for archive-by-path. The
@@ -408,6 +408,7 @@ async function maybeRemoveDirectory(
       paseoHome: dependencies.paseoHome,
       worktreesBaseRoot: dependencies.paseoWorktreesBaseRoot,
     });
+    dependencies.workspaceGitService.invalidateWorktrees();
     dependencies.github.invalidate({ cwd: backing.path });
     return true;
   } catch (error) {

packages/server/src/server/workspace-git-service.primitive.test.ts

@@ -1819,6 +1819,46 @@ describe("WorkspaceGitServiceImpl D2 read methods", () => {
     service.dispose();
   });
 
+  test("invalidating worktrees discards warm listings across checkout roots and in-flight reads", async () => {
+    const worktrees = [
+      {
+        path: "/tmp/paseo-home/worktrees/repo/feature",
+        createdAt: "2026-04-12T00:00:00.000Z",
+        branchName: "feature",
+      },
+    ];
+    const readStarted = createDeferred<void>();
+    const oldRead = createDeferred<typeof worktrees>();
+    const alternateCheckout = resolvePath("/tmp/alternate-checkout");
+    let reads = 0;
+    const service = createService({
+      listPaseoWorktrees: async () => {
+        reads += 1;
+        if (reads <= 2) return worktrees;
+        if (reads === 3) {
+          readStarted.resolve();
+          return oldRead.promise;
+        }
+        return [];
+      },
+    });
+    try {
+      await expect(service.listWorktrees(REPO_CWD)).resolves.toEqual(worktrees);
+      await expect(service.listWorktrees(alternateCheckout)).resolves.toEqual(worktrees);
+      const pending = service.listWorktrees(REPO_CWD, { force: true, reason: "test" });
+      await readStarted.promise;
+      service.invalidateWorktrees();
+      await expect(service.listWorktrees(REPO_CWD)).resolves.toEqual([]);
+      await expect(service.listWorktrees(alternateCheckout)).resolves.toEqual([]);
+      oldRead.resolve(worktrees);
+      await expect(pending).resolves.toEqual(worktrees);
+      await expect(service.listWorktrees(REPO_CWD)).resolves.toEqual([]);
+    } finally {
+      oldRead.resolve(worktrees);
+      await service.dispose();
+    }
+  });
+
   test("listWorktrees shares one repo-root scoped read across sibling workspace cwds", async () => {
     const tempDir = realpathSync(mkdtempSync(join(tmpdir(), "workspace-git-service-")));
     const repoDir = join(tempDir, "repo");

packages/server/src/server/workspace-git-service.ts

@@ -241,6 +241,7 @@ export interface WorkspaceGitService {
     cwdOrRepoRoot: string,
     options?: WorkspaceGitReadOptions,
   ): Promise<WorkspaceGitWorktreeInfo[]>;
+  invalidateWorktrees(): void;
   getProjectSlug(cwd: string, options?: WorkspaceGitReadOptions): Promise<string>;
   resolveRepoRoot(cwd: string, options?: WorkspaceGitReadOptions): Promise<string>;
   resolveDefaultBranch(cwdOrRepoRoot: string, options?: WorkspaceGitReadOptions): Promise<string>;
@@ -918,6 +919,13 @@ export class WorkspaceGitServiceImpl implements WorkspaceGitService {
       : (snapshot.git.repoRoot ?? resolve(cwd));
   }
 
+  invalidateWorktrees(): void {
+    this.assertNotDisposed();
+    // Checkout paths can cache the same list under different roots, including bare repos.
+    // Detach in-flight reads too, so a pre-mutation result cannot refill the cache.
+    this.worktreeListCache.clear();
+  }
+
   async resolveDefaultBranch(
     cwdOrRepoRoot: string,
     options?: WorkspaceGitReadOptions,

packages/server/src/server/worktree-session.test.ts

@@ -2017,6 +2017,7 @@ describe("handlePaseoWorktreeArchiveRequest worktree scope", () => {
         workspaceGitService: {
           getSnapshot: vi.fn(async () => null),
           listWorktrees: vi.fn(async () => []),
+          invalidateWorktrees: () => {},
         },
         agentManager: {
           listAgents: () => [],
@@ -2088,6 +2089,7 @@ describe("handlePaseoWorktreeArchiveRequest worktree scope", () => {
         workspaceGitService: {
           getSnapshot: vi.fn(async () => null),
           listWorktrees: vi.fn(async () => []),
+          invalidateWorktrees: () => {},
         },
         agentManager: {
           listAgents: () => [],
@@ -2164,6 +2166,7 @@ describe("handlePaseoWorktreeArchiveRequest worktree scope", () => {
         workspaceGitService: {
           getSnapshot: vi.fn(async () => null),
           listWorktrees: vi.fn(async () => []),
+          invalidateWorktrees: () => {},
         },
         agentManager: {
           listAgents: () => [],
@@ -2240,6 +2243,7 @@ describe("handlePaseoWorktreeArchiveRequest worktree scope", () => {
       workspaceGitService: {
         getSnapshot: vi.fn(async () => null),
         listWorktrees: vi.fn(async () => []),
+        invalidateWorktrees: () => {},
       },
       agentManager: {
         listAgents: () => [],

packages/server/src/server/worktree-session.ts

@@ -501,7 +501,10 @@ export async function handlePaseoWorktreeArchiveRequest(
     "emitWorkspaceUpdatesForWorkspaceIds" | "workspaceGitService"
   > & {
     emit: EmitSessionMessage;
-    workspaceGitService: Pick<WorkspaceGitService, "getSnapshot" | "listWorktrees">;
+    workspaceGitService: Pick<
+      WorkspaceGitService,
+      "getSnapshot" | "listWorktrees" | "invalidateWorktrees"
+    >;
     emitWorkspaceUpdatesForWorkspaceIds: (workspaceIds: Iterable<string>) => Promise<void>;
   },
   msg: Extract<SessionInboundMessage, { type: "paseo_worktree_archive_request" }>,

packages/server/src/server/worktree/commands.ts

@@ -93,7 +93,10 @@ export interface ArchiveCommandDependencies extends Omit<
   ArchiveDependencies,
   "workspaceGitService"
 > {
-  workspaceGitService: Pick<WorkspaceGitService, "getSnapshot" | "listWorktrees">;
+  workspaceGitService: Pick<
+    WorkspaceGitService,
+    "getSnapshot" | "listWorktrees" | "invalidateWorktrees"
+  >;
 }
 
 export interface ArchiveCommandInput {

packages/server/src/utils/checkout-git.ts

@@ -1187,13 +1187,16 @@ export function parseWorktreeList(output: string): GitWorktreeEntry[] {
 
 async function getWorktreePathForBranch(cwd: string, branchName: string): Promise<string | null> {
   try {
-    const { stdout } = await runGitCommand(["worktree", "list", "--porcelain"], {
-      cwd,
-      envOverlay: READ_ONLY_GIT_ENV,
-    });
-    const entries = parseWorktreeList(stdout);
     const ref = branchName.startsWith("refs/heads/") ? branchName : `refs/heads/${branchName}`;
-    return entries.find((entry) => entry.branchRef === ref)?.path ?? null;
+    const { stdout } = await runGitCommand(
+      ["for-each-ref", "--format=%(refname)%00%(worktreepath)%00", ref],
+      { cwd, envOverlay: READ_ONLY_GIT_ENV },
+    );
+    for (const record of stdout.split("\0\n")) {
+      const [reference, worktreePath] = record.split("\0");
+      if (reference === ref) return worktreePath || null;
+    }
+    return null;
   } catch {
     return null;
   }

packages/server/src/utils/git-rev-parse-path.test.ts

@@ -0,0 +1,26 @@
+import { resolve } from "node:path";
+import { describe, expect, it } from "vitest";
+import { parseGitRevParsePath, resolveGitRevParsePath } from "./git-rev-parse-path.js";
+
+describe("Git path output", () => {
+  it.each(["\n", "\r\n", ""])("preserves path whitespace with delimiter %j", (delimiter) => {
+    expect(parseGitRevParsePath(`/repo ${delimiter}`)).toBe("/repo ");
+    expect(parseGitRevParsePath(` relative path ${delimiter}`)).toBe(" relative path ");
+  });
+
+  it.each([
+    "",
+    "\n",
+    "\r\n",
+    "--path-format=absolute\n",
+    "--path-format=absolute\n/repo\n",
+    "/repo\n/another\n",
+    "/repo\n\n",
+  ])("rejects invalid output %j", (output) => {
+    expect(parseGitRevParsePath(output)).toBeNull();
+  });
+
+  it("resolves a relative path without stripping its trailing space", () => {
+    expect(resolveGitRevParsePath("/base", "repo \n")).toBe(resolve("/base", "repo "));
+  });
+});