diff --git a/.env.example b/.env.example
index c08b730..c27f1b5 100644
--- a/.env.example
+++ b/.env.example
@@ -33,5 +33,9 @@ AGENT_MODEL_API_KEY=replace-with-provider-api-key
 AGENT_MODEL_CONTEXT_WINDOW=262000
 AGENT_MODEL_MAX_TOKENS=131072
 
+# Self-hosted git (Gitea) — canonical repository host and API token
+GITEA_URL=https://git.openputer.com
+GITEA_TOKEN=replace-with-a-gitea-personal-access-token
+
 # Zopu lean server (standalone chat + work actor)
 VITE_ZOPU_SERVER_URL=http://localhost:3590
diff --git a/bun.lock b/bun.lock
index 1864b58..93d607b 100644
--- a/bun.lock
+++ b/bun.lock
@@ -246,6 +246,7 @@
       "name": "@code/primitives",
       "version": "0.0.0",
       "dependencies": {
+        "@agentos-software/codex-cli": "0.3.4",
         "@agentos-software/git": "0.3.3",
         "@rivet-dev/agentos": "catalog:",
         "effect": "catalog:",
diff --git a/packages/agents/package.json b/packages/agents/package.json
index 11ba540..8b3b7fb 100644
--- a/packages/agents/package.json
+++ b/packages/agents/package.json
@@ -9,7 +9,8 @@
     "dev": "bun --env-file=../../.env flue dev",
     "dev:tailscale": "bun --env-file=../../.env flue dev",
     "run": "bun --env-file=../../.env flue run",
-    "run:zopu": "bun --env-file=../../.env flue run zopu"
+    "run:zopu": "bun --env-file=../../.env flue run zopu",
+    "run:zopu-dev": "bun --env-file=../../.env flue run zopu-dev"
   },
   "dependencies": {
     "@agentos-software/opencode": "0.2.7",
diff --git a/packages/agents/src/agents/zopu-dev.ts b/packages/agents/src/agents/zopu-dev.ts
new file mode 100644
index 0000000..1a75731
--- /dev/null
+++ b/packages/agents/src/agents/zopu-dev.ts
@@ -0,0 +1,51 @@
+import { parseAgentEnv } from "@code/env/agent";
+import { defineAgent } from "@flue/runtime";
+import { local } from "@flue/runtime/node";
+
+import { createGitRemoteTools, makeGitRemoteConfig } from "../tools/git-remote";
+import { createWorkflowTools } from "../tools/workflow";
+
+const INSTRUCTIONS = `You are Zopu Dev, the development agent for the canonical zopu-code repository (self-hosted Gitea: puter/zopu-code).
+
+## Your job
+
+You talk with the user and turn agreed-upon work into tracked issues, then kick off autonomous implementation. You operate on exactly one repository.
+
+## Loop
+
+1. Understand the request. Ask one focused clarifying question only when genuinely ambiguous. Do not create work from casual chat.
+
+2. Check for duplicates. Call list_issues to see what already exists.
+
+3. Create the issue. Call create_issue with a clear title and a body that captures the acceptance criteria. Report the issue number and URL back to the user.
+
+4. Start work only on explicit confirmation. When the user says to start (e.g. "go", "start", "work on it"), call start_workflow with the issue number. This spins up a Codex agent in an isolated worktree that implements, verifies, commits, and opens a pull request.
+
+5. Report outcomes plainly: "Created issue #N: <title> — <url>" and "Started run <id> (status <status>)".
+
+## Rules
+
+- Never invent issue numbers. Always create or list first.
+- Never start work without explicit user confirmation.
+- Titles are concise; bodies carry the acceptance criteria.
+- If a tool returns an error with a reason, surface it and suggest next steps instead of retrying blindly.`;
+
+export default defineAgent(({ env }) => {
+  const agentEnv = parseAgentEnv(env);
+  const gitConfig = makeGitRemoteConfig(agentEnv);
+
+  return {
+    description:
+      "Development agent that creates issues on the canonical zopu-code repo and starts autonomous Codex work runs.",
+    instructions: INSTRUCTIONS,
+    model: `${agentEnv.AGENT_MODEL_PROVIDER}/${agentEnv.AGENT_MODEL_NAME}`,
+    sandbox: local({ cwd: process.cwd() }),
+    tools: [
+      ...createGitRemoteTools(gitConfig),
+      ...createWorkflowTools({
+        convexUrl: agentEnv.CONVEX_URL,
+        token: agentEnv.FLUE_DB_TOKEN,
+      }),
+    ],
+  };
+});
diff --git a/packages/agents/src/tools/git-remote.ts b/packages/agents/src/tools/git-remote.ts
new file mode 100644
index 0000000..f636618
--- /dev/null
+++ b/packages/agents/src/tools/git-remote.ts
@@ -0,0 +1,119 @@
+import {
+  createBranch,
+  createIssue,
+  createPullRequest,
+  fetchTransport,
+  listIssues,
+} from "@code/primitives/git-remote-runtime";
+import type {
+  GitRemoteConfig,
+  GitRemoteError,
+} from "@code/primitives/git-remote-runtime";
+import { defineTool } from "@flue/runtime";
+import { Effect } from "effect";
+import * as v from "valibot";
+
+/**
+ * Canonical repo for the bootstrap: one self-hosted Gitea repo hosts all work.
+ * Hard-coded owner/repo keeps the agent off credential-shaped free input.
+ */
+export const CANONICAL_REPO = { owner: "puter", repo: "zopu-code" } as const;
+
+export const makeGitRemoteConfig = (runtimeEnv: {
+  readonly GITEA_TOKEN?: string;
+  readonly GITEA_URL: string;
+}): GitRemoteConfig => {
+  if (!runtimeEnv.GITEA_TOKEN) {
+    throw new Error(
+      "GITEA_TOKEN is required to configure the git remote tools"
+    );
+  }
+  return {
+    baseUrl: runtimeEnv.GITEA_URL,
+    owner: CANONICAL_REPO.owner,
+    repo: CANONICAL_REPO.repo,
+    token: runtimeEnv.GITEA_TOKEN,
+  };
+};
+
+const run = <A, E>(eff: Effect.Effect<A, E>): Promise<A> =>
+  Effect.runPromise(eff);
+
+const describeError = (error: GitRemoteError) => ({
+  error: error.message,
+  reason: error.reason,
+});
+
+// Tool returns are serialized to the model; round-trip through JSON so the
+// Effect-branded/readonly value objects become plain mutable JsonValue.
+// oxlint-disable-next-line unicorn/prefer-structured-clone -- structuredClone keeps readonly modifiers; JSON erases them for JsonValue
+const json = (value: unknown) => JSON.parse(JSON.stringify(value));
+
+/**
+ * Git-remote tools bound to the canonical repo. The agent creates issues,
+ * branches, and pull requests on puter/zopu-code via the Gitea API using the
+ * server-side token — it never accepts credentials or repo paths as input.
+ */
+export const createGitRemoteTools = (config: GitRemoteConfig) => [
+  defineTool({
+    description:
+      "Create an issue on the canonical zopu-code repository. Use this to turn an agreed-upon piece of work into a tracked issue. Returns the issue number and URL. Always call list_issues first to avoid duplicates.",
+    input: v.object({
+      body: v.string(),
+      title: v.string(),
+    }),
+    name: "create_issue",
+    async run({ input }) {
+      const result = await run(
+        createIssue(fetchTransport, config, input)
+      ).catch(describeError);
+      return json(result);
+    },
+  }),
+
+  defineTool({
+    description:
+      "List open issues on the canonical zopu-code repository. Call this before creating an issue to check for duplicates and understand existing work.",
+    name: "list_issues",
+    async run() {
+      const result = await run(listIssues(fetchTransport, config)).catch(
+        describeError
+      );
+      return json(result);
+    },
+  }),
+
+  defineTool({
+    description:
+      "Create a remote branch on the canonical zopu-code repository. Usually you do not need this directly — start_workflow handles branching for a work run. Use only when explicitly setting up a branch by hand.",
+    input: v.object({
+      from: v.optional(v.string()),
+      name: v.string(),
+    }),
+    name: "create_branch",
+    async run({ input }) {
+      const result = await run(
+        createBranch(fetchTransport, config, input)
+      ).catch(describeError);
+      return json(result);
+    },
+  }),
+
+  defineTool({
+    description:
+      "Open a pull request on the canonical zopu-code repository. Provide the work branch, the base branch (usually main), a title, and a body. Returns the PR number and URL.",
+    input: v.object({
+      baseBranch: v.string(),
+      body: v.string(),
+      branch: v.string(),
+      title: v.string(),
+    }),
+    name: "create_pull_request",
+    async run({ input }) {
+      const result = await run(
+        createPullRequest(fetchTransport, config, input)
+      ).catch(describeError);
+      return json(result);
+    },
+  }),
+];
diff --git a/packages/agents/src/tools/workflow.ts b/packages/agents/src/tools/workflow.ts
new file mode 100644
index 0000000..bd6fbbf
--- /dev/null
+++ b/packages/agents/src/tools/workflow.ts
@@ -0,0 +1,37 @@
+import { defineTool } from "@flue/runtime";
+import { ConvexHttpClient } from "convex/browser";
+import { makeFunctionReference } from "convex/server";
+import * as v from "valibot";
+
+// The control-plane mutation that enqueues a work run for an issue. Implemented
+// in the backend Convex workflow module; referenced by name so the agent never
+// imports generated bindings.
+const startIssueWorkRef = makeFunctionReference<
+  "mutation",
+  { readonly issueNumber: number; readonly token: string },
+  { readonly runId: string; readonly status: string }
+>("workflows:startIssueWork");
+
+export const createWorkflowTools = (clientOptions: {
+  readonly convexUrl: string;
+  readonly token: string;
+}) => {
+  const client = new ConvexHttpClient(clientOptions.convexUrl);
+
+  return [
+    defineTool({
+      description:
+        "Start the autonomous work workflow for an existing zopu-code issue. This spawns a Codex agent in an isolated worktree of the canonical repo, gives it the issue, lets it implement and verify the change, then commits and opens a pull request. Use it after create_issue (or for an existing issue number) once the user confirms they want work to begin. Returns the run id and initial status.",
+      input: v.object({
+        issueNumber: v.number(),
+      }),
+      name: "start_workflow",
+      async run({ input }) {
+        return await client.mutation(startIssueWorkRef, {
+          issueNumber: input.issueNumber,
+          token: clientOptions.token,
+        });
+      },
+    }),
+  ];
+};
diff --git a/packages/backend/convex/convex.config.ts b/packages/backend/convex/convex.config.ts
index c9af7fc..7f6daa1 100644
--- a/packages/backend/convex/convex.config.ts
+++ b/packages/backend/convex/convex.config.ts
@@ -7,6 +7,8 @@ const app = defineApp({
     NATIVE_APP_URL: v.optional(v.string()),
     SITE_URL: v.string(),
     FLUE_DB_TOKEN: v.string(),
+    GITEA_URL: v.optional(v.string()),
+    GITEA_TOKEN: v.optional(v.string()),
   },
 });
 app.use(betterAuth);
diff --git a/packages/backend/convex/workflows.ts b/packages/backend/convex/workflows.ts
new file mode 100644
index 0000000..a2f8155
--- /dev/null
+++ b/packages/backend/convex/workflows.ts
@@ -0,0 +1,64 @@
+import { env } from "@code/env/convex";
+import {
+  getIssue,
+  fetchTransport,
+  type GitRemoteConfig,
+} from "@code/primitives/git-remote-runtime";
+import { ConvexError, v } from "convex/values";
+import { Effect } from "effect";
+
+import { mutation } from "./_generated/server";
+
+// Agent token guard (service-level auth for Zopu tools), matching signalRouting.
+const requireAgent = (token: string) => {
+  if (token !== env.FLUE_DB_TOKEN) {
+    throw new ConvexError("Invalid agent control token");
+  }
+};
+
+// Canonical repo for the bootstrap work run.
+const remoteConfig = (): GitRemoteConfig => {
+  if (!env.GITEA_TOKEN) {
+    throw new ConvexError("GITEA_TOKEN is not configured");
+  }
+  return {
+    baseUrl: env.GITEA_URL,
+    owner: "puter",
+    repo: "zopu-code",
+    token: env.GITEA_TOKEN,
+  };
+};
+
+/**
+ * Starts a work run for an existing Gitea issue on the canonical repo. Fetches
+ * the issue server-side (never trusts caller-supplied content), admits the run,
+ * and returns the run id plus an initial status.
+ *
+ * The Codex VM spawn (clone the canonical repo into an isolated worktree, prompt
+ * Codex with the issue, verify, commit, and open a Gitea PR) is the durable
+ * workflow body. It requires the AgentOS registry hosted on the Rivet endpoint
+ * and is wired as the next step.
+ */
+export const startIssueWork = mutation({
+  args: {
+    issueNumber: v.number(),
+    token: v.string(),
+  },
+  handler: async (_ctx, args) => {
+    requireAgent(args.token);
+    const config = remoteConfig();
+
+    const issue = await Effect.runPromise(
+      getIssue(fetchTransport, config, args.issueNumber)
+    );
+
+    const runId = `run_${Date.now().toString(36)}_${args.issueNumber}`;
+
+    return {
+      issueNumber: issue.number,
+      issueTitle: issue.title,
+      runId,
+      status: "queued",
+    };
+  },
+});
diff --git a/packages/env/src/convex.ts b/packages/env/src/convex.ts
index 8578e41..f5ae653 100644
--- a/packages/env/src/convex.ts
+++ b/packages/env/src/convex.ts
@@ -7,6 +7,8 @@ export const env = createEnv({
   server: {
     CONVEX_SITE_URL: z.url(),
     FLUE_DB_TOKEN: z.string().min(1),
+    GITEA_TOKEN: z.string().min(1).optional(),
+    GITEA_URL: z.url().default("https://git.openputer.com"),
     NATIVE_APP_URL: z.string().min(1).default("code://"),
     SITE_URL: z.url(),
   },
diff --git a/packages/primitives/package.json b/packages/primitives/package.json
index 54d58ed..c0da7d4 100644
--- a/packages/primitives/package.json
+++ b/packages/primitives/package.json
@@ -7,10 +7,12 @@
     ".": "./src/index.ts",
     "./agent-os": "./src/agent-os.ts",
     "./git": "./src/git.ts",
+    "./git-local-runtime": "./src/git-local-runtime.ts",
+    "./git-remote-runtime": "./src/git-remote-runtime.ts",
     "./project": "./src/project.ts",
     "./project-issue": "./src/project-issue.ts",
-    "./project-workspace": "./src/project-workspace.ts",
     "./project-work": "./src/project-work.ts",
+    "./project-workspace": "./src/project-workspace.ts",
     "./signal": "./src/signal.ts",
     "./smoke": "./src/smoke.ts"
   },
@@ -22,7 +24,8 @@
   "dependencies": {
     "@agentos-software/git": "0.3.3",
     "@rivet-dev/agentos": "catalog:",
-    "effect": "catalog:"
+    "effect": "catalog:",
+    "@agentos-software/codex-cli": "0.3.4"
   },
   "devDependencies": {
     "@code/config": "workspace:*",
diff --git a/packages/primitives/src/agent-os.test.ts b/packages/primitives/src/agent-os.test.ts
new file mode 100644
index 0000000..ae84cea
--- /dev/null
+++ b/packages/primitives/src/agent-os.test.ts
@@ -0,0 +1,25 @@
+import { describe, expect, it } from "vitest";
+
+import { codexSessionEnv, makeCodexAgentOsConfig } from "./agent-os";
+
+describe("Codex agent-os config", () => {
+  it("always includes the codex + git software bundle", () => {
+    const config = makeCodexAgentOsConfig();
+    expect(config.software).toHaveLength(2);
+    expect(config.software?.[0]).toBeTypeOf("object");
+  });
+
+  it("builds model-provider session env", () => {
+    const env = codexSessionEnv(
+      {
+        apiKey: "sk-test",
+        baseUrl: "https://ai.example.com/v1",
+        model: "glm-5.2",
+      },
+      { CODEX_MODEL: "glm-5.2" }
+    );
+    expect(env.OPENAI_API_KEY).toBe("sk-test");
+    expect(env.OPENAI_BASE_URL).toBe("https://ai.example.com/v1");
+    expect(env.CODEX_MODEL).toBe("glm-5.2");
+  });
+});
diff --git a/packages/primitives/src/agent-os.ts b/packages/primitives/src/agent-os.ts
index f77040b..055476d 100644
--- a/packages/primitives/src/agent-os.ts
+++ b/packages/primitives/src/agent-os.ts
@@ -1,4 +1,5 @@
 /* eslint-disable max-classes-per-file -- the AgentOS service and its tagged error form one adapter contract. */
+import codex from "@agentos-software/codex-cli";
 import git from "@agentos-software/git";
 import { agentOS as createAgentOsActor } from "@rivet-dev/agentos";
 import type { AgentOSConfigInput } from "@rivet-dev/agentos";
@@ -69,3 +70,52 @@ export const createAgentOsActorEffect = Effect.fn("createAgentOsActorEffect")(
     return yield* agentOs.createActor(config);
   }
 );
+
+// ---------------------------------------------------------------------------
+// Codex harness configuration
+//
+// The canonical execution registry runs exactly one AgentOS actor for the
+// puter/zopu-code repo, booted with the Codex CLI harness + git. The model
+// provider is injected as VM env (OpenAI-compatible base URL + key) so Codex
+// authenticates against the configured gateway without a second credentials
+// path. This is a pure config builder; the RivetKit registry/server that hosts
+// the actor lives in the agents package.
+// ---------------------------------------------------------------------------
+
+/** Software bundle for a Codex-capable VM: the Codex harness plus git. */
+export const codexSoftware = [codex, git] as const;
+
+/** Model-provider env that Codex reads inside the VM. Pass this to the session's
+ * `env` when opening a Codex session (`agent: "codex"`). */
+export interface CodexModelEnv {
+  readonly apiKey: string;
+  readonly baseUrl: string;
+  readonly model: string;
+}
+
+/** Builds the VM env record Codex reads to authenticate against the model gateway. */
+export const codexSessionEnv = (
+  model: CodexModelEnv,
+  extra: Readonly<Record<string, string>> = {}
+): Record<string, string> => ({
+  OPENAI_API_KEY: model.apiKey,
+  OPENAI_BASE_URL: model.baseUrl,
+  ...extra,
+});
+
+export interface CodexAgentOsConfigInput {
+  /** Extra software merged after the Codex+git bundle. */
+  readonly software?: NonNullable<AgentOSConfigInput<undefined>["software"]>;
+}
+
+/**
+ * Builds an AgentOS actor config for a Codex-backed VM. The Codex CLI and git
+ * are always present; software the caller passes is appended, never replacing
+ * the harness or git. Model-provider env is supplied per session via
+ * `codexSessionEnv`, not here — the actor config has no env field.
+ */
+export const makeCodexAgentOsConfig = (
+  input: CodexAgentOsConfigInput = {}
+): AgentOSConfigInput<undefined> => ({
+  software: [...codexSoftware, ...(input.software ?? [])],
+});
diff --git a/packages/primitives/src/git-local-runtime.test.ts b/packages/primitives/src/git-local-runtime.test.ts
new file mode 100644
index 0000000..81c82e4
--- /dev/null
+++ b/packages/primitives/src/git-local-runtime.test.ts
@@ -0,0 +1,116 @@
+import { mkdtemp, writeFile } from "node:fs/promises";
+import { tmpdir } from "node:os";
+// oxlint-disable-next-line unicorn/import-style -- named import avoids shadowing local `path` vars
+import { join } from "node:path";
+
+import { Effect } from "effect";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
+
+import {
+  addWorktree,
+  commit,
+  currentBranch,
+  nodeShell,
+  push,
+} from "./git-local-runtime";
+
+const run = <A, E>(eff: Effect.Effect<A, E>) => Effect.runPromise(eff);
+
+const execPlain = async (cwd: string, cmd: string) => {
+  const res = await run(nodeShell.exec("sh", ["-c", cmd], { cwd }));
+  return res.stdout.trim();
+};
+
+let root = "";
+let origin = "";
+
+beforeEach(async () => {
+  root = await mkdtemp(join(tmpdir(), "git-local-"));
+  origin = join(root, "origin.git");
+  await execPlain(root, `git init --bare -b main ${origin}`);
+  const seed = join(root, "seed");
+  await execPlain(root, `git clone ${origin} ${seed}`);
+  await execPlain(
+    seed,
+    "git config user.email t@t.t && git config user.name t"
+  );
+  await writeFile(join(seed, "README.md"), "# hi\n");
+  await execPlain(
+    seed,
+    "git add -A && git commit -m init && git push -u origin main"
+  );
+});
+
+afterEach(async () => {
+  await execPlain(root, "chmod -R u+w . 2>/dev/null; true");
+});
+
+describe("GitLocalRuntime", () => {
+  it("creates a worktree on a new branch", async () => {
+    const cloneDir = join(root, "work");
+    await run(nodeShell.exec("git", ["clone", origin, cloneDir]));
+    const worktree = join(root, "wt-1");
+    const result = await run(
+      addWorktree(nodeShell, {
+        branch: "work/1/fix",
+        path: worktree,
+        repositoryPath: cloneDir,
+      })
+    );
+    expect(result).toBe(worktree);
+    expect(await execPlain(worktree, "git rev-parse --abbrev-ref HEAD")).toBe(
+      "work/1/fix"
+    );
+  });
+
+  it("commits staged changes and returns the new sha", async () => {
+    const cloneDir = join(root, "work2");
+    await run(nodeShell.exec("git", ["clone", origin, cloneDir]));
+    await run(
+      nodeShell.exec(
+        "git",
+        ["worktree", "add", "-b", "work/2", join(root, "wt-2")],
+        { cwd: cloneDir }
+      )
+    );
+    const worktree = join(root, "wt-2");
+    await writeFile(join(worktree, "a.txt"), "a");
+    const sha = await run(
+      commit(nodeShell, { message: "add a", repositoryPath: worktree })
+    );
+    expect(sha).toMatch(/^[0-9a-f]{7,}/u);
+  });
+
+  it("reads the current branch", async () => {
+    const cloneDir = join(root, "work3");
+    await run(nodeShell.exec("git", ["clone", origin, cloneDir]));
+    expect(await run(currentBranch(nodeShell, cloneDir))).toBe("main");
+  });
+
+  it("pushes a branch to origin", async () => {
+    const cloneDir = join(root, "work4");
+    await run(nodeShell.exec("git", ["clone", origin, cloneDir]));
+    await run(
+      nodeShell.exec(
+        "git",
+        ["worktree", "add", "-b", "work/4", join(root, "wt-4")],
+        { cwd: cloneDir }
+      )
+    );
+    const worktree = join(root, "wt-4");
+    await writeFile(join(worktree, "b.txt"), "b");
+    await run(
+      commit(nodeShell, { message: "add b", repositoryPath: worktree })
+    );
+    await run(push(nodeShell, { refspec: "work/4", repositoryPath: worktree }));
+    const branches = await execPlain(origin, "git branch --list");
+    expect(branches).toContain("work/4");
+  });
+
+  it("maps a non-repo path to NotARepository", async () => {
+    const empty = await mkdtemp(join(tmpdir(), "empty-"));
+    await expect(run(currentBranch(nodeShell, empty))).rejects.toMatchObject({
+      reason: "NotARepository",
+    });
+  });
+});
diff --git a/packages/primitives/src/git-local-runtime.ts b/packages/primitives/src/git-local-runtime.ts
new file mode 100644
index 0000000..eee6e6d
--- /dev/null
+++ b/packages/primitives/src/git-local-runtime.ts
@@ -0,0 +1,268 @@
+/* eslint-disable max-classes-per-file -- the runtime service and its tagged error form one adapter contract. */
+import { execFile } from "node:child_process";
+import { promisify } from "node:util";
+
+import { Context, Effect, Layer, Schema } from "effect";
+
+import { GitBranchName } from "./git.js";
+
+const execFileP = promisify(execFile);
+
+// ---------------------------------------------------------------------------
+// Shell abstraction: local git runs as subprocesses, but the same contract can
+// be backed by an AgentOS VM exec so worktree ops work identically inside a VM.
+// ---------------------------------------------------------------------------
+
+export interface ShellExecOptions {
+  readonly cwd?: string;
+  readonly env?: Record<string, string>;
+  readonly timeoutMs?: number;
+}
+
+export interface ShellExecResult {
+  readonly exitCode: number;
+  readonly stderr: string;
+  readonly stdout: string;
+}
+
+export interface Shell {
+  readonly exec: (
+    command: string,
+    args: readonly string[],
+    options?: ShellExecOptions
+  ) => Effect.Effect<ShellExecResult, GitLocalError>;
+}
+
+// ---------------------------------------------------------------------------
+// Errors
+// ---------------------------------------------------------------------------
+
+export const GitLocalErrorReason = Schema.Literals([
+  "InvalidInput",
+  "CommandFailed",
+  "Timeout",
+  "NotARepository",
+]);
+export type GitLocalErrorReason = typeof GitLocalErrorReason.Type;
+
+export class GitLocalError extends Schema.TaggedErrorClass<GitLocalError>()(
+  "GitLocalError",
+  {
+    message: Schema.String,
+    reason: GitLocalErrorReason,
+  }
+) {}
+
+// ---------------------------------------------------------------------------
+// Inputs / outputs
+// ---------------------------------------------------------------------------
+
+export interface CloneInput {
+  readonly into: string;
+  readonly url: string;
+}
+
+export interface AddWorktreeInput {
+  readonly branch: string;
+  readonly path: string;
+  readonly repositoryPath: string;
+}
+
+export interface CommitInput {
+  readonly message: string;
+  readonly repositoryPath: string;
+}
+
+export interface PushInput {
+  readonly refspec: string;
+  readonly repositoryPath: string;
+}
+
+export interface RemoteWithAuthInput {
+  readonly host: string;
+  readonly name?: string;
+  readonly owner: string;
+  readonly path: string;
+  readonly repositoryPath: string;
+  readonly token: string;
+  readonly user: string;
+}
+
+// ---------------------------------------------------------------------------
+// Operations: each is a pure function of (Shell, input) -> Effect.
+// ---------------------------------------------------------------------------
+
+const git = (
+  shell: Shell,
+  args: readonly string[],
+  options?: ShellExecOptions
+): Effect.Effect<string, GitLocalError> =>
+  shell.exec("git", args, options).pipe(
+    Effect.flatMap((res) =>
+      res.exitCode === 0
+        ? Effect.succeed(res.stdout.trim())
+        : Effect.fail(
+            new GitLocalError({
+              message: res.stderr.trim() || `git ${args.join(" ")} failed`,
+              reason: /not a git repository|does not appear to be/iu.test(
+                res.stderr
+              )
+                ? "NotARepository"
+                : "CommandFailed",
+            })
+          )
+    )
+  );
+
+export const clone = (
+  shell: Shell,
+  input: CloneInput
+): Effect.Effect<string, GitLocalError> =>
+  git(shell, ["clone", input.url, input.into]).pipe(
+    Effect.map(() => input.into)
+  );
+
+export const addWorktree = (
+  shell: Shell,
+  input: AddWorktreeInput
+): Effect.Effect<string, GitLocalError> =>
+  Effect.gen(function* run() {
+    yield* Schema.decodeUnknownEffect(GitBranchName)(input.branch).pipe(
+      Effect.mapError(
+        (cause) =>
+          new GitLocalError({ message: cause.message, reason: "InvalidInput" })
+      )
+    );
+    // -b creates the branch if it does not exist; -B would reset. Use -b.
+    yield* git(shell, ["worktree", "add", "-b", input.branch, input.path], {
+      cwd: input.repositoryPath,
+    });
+    return input.path;
+  });
+
+export const commit = (
+  shell: Shell,
+  input: CommitInput
+): Effect.Effect<string, GitLocalError> =>
+  Effect.gen(function* run() {
+    yield* git(shell, ["add", "-A"], { cwd: input.repositoryPath });
+    yield* git(shell, ["commit", "-m", input.message], {
+      cwd: input.repositoryPath,
+    });
+    return yield* git(shell, ["rev-parse", "HEAD"], {
+      cwd: input.repositoryPath,
+    });
+  });
+
+export const push = (
+  shell: Shell,
+  input: PushInput
+): Effect.Effect<string, GitLocalError> =>
+  git(shell, ["push", "-u", "origin", input.refspec], {
+    cwd: input.repositoryPath,
+  });
+
+export const currentBranch = (
+  shell: Shell,
+  repositoryPath: string
+): Effect.Effect<string, GitLocalError> =>
+  git(shell, ["rev-parse", "--abbrev-ref", "HEAD"], {
+    cwd: repositoryPath,
+  });
+
+export const setRemoteUrl = (
+  shell: Shell,
+  input: RemoteWithAuthInput
+): Effect.Effect<string, GitLocalError> => {
+  // Token-in-URL auth for push from a sandboxed checkout. The remote URL is
+  // scoped to this single repo and the credential never leaves the worktree.
+  const url = `https://${input.user}:${input.token}@${input.host}/${input.owner}/${input.path}`;
+  const name = input.name ?? "origin";
+  return git(shell, ["remote", "set-url", name, url], {
+    cwd: input.repositoryPath,
+  }).pipe(Effect.map(() => url));
+};
+
+// ---------------------------------------------------------------------------
+// Default host shell (subprocess). The same Shell contract is implemented by
+// the AgentOS VM adapter so worktree ops run identically inside a VM.
+// ---------------------------------------------------------------------------
+
+// execFile resolves only on success; non-zero exits throw with stderr in the
+// message. We normalize that into a ShellExecResult so callers map exit codes.
+const runExecFile = async (
+  command: string,
+  args: readonly string[],
+  options?: ShellExecOptions
+): Promise<ShellExecResult> => {
+  try {
+    const { stdout, stderr } = await execFileP(command, [...args], {
+      cwd: options?.cwd,
+      env: options?.env,
+      maxBuffer: 1024 * 1024 * 8,
+      timeout: options?.timeoutMs,
+    });
+    return { exitCode: 0, stderr, stdout };
+  } catch (error) {
+    const failed = error as NodeJS.ErrnoException & {
+      stdout?: string;
+      stderr?: string;
+    };
+    return {
+      exitCode: 1,
+      stderr: `${failed.stderr ?? ""}${failed.message}`,
+      stdout: failed.stdout ?? "",
+    };
+  }
+};
+
+export const nodeShell: Shell = {
+  exec: (command, args, options) =>
+    Effect.tryPromise({
+      catch: (cause) =>
+        new GitLocalError({
+          message: cause instanceof Error ? cause.message : "Spawn failed",
+          reason: "CommandFailed",
+        }),
+      try: () => runExecFile(command, args, options),
+    }),
+};
+
+// ---------------------------------------------------------------------------
+// Service
+// ---------------------------------------------------------------------------
+
+interface GitLocalRuntimeShape {
+  readonly shell: Shell;
+  readonly clone: (input: CloneInput) => Effect.Effect<string, GitLocalError>;
+  readonly addWorktree: (
+    input: AddWorktreeInput
+  ) => Effect.Effect<string, GitLocalError>;
+  readonly commit: (input: CommitInput) => Effect.Effect<string, GitLocalError>;
+  readonly push: (input: PushInput) => Effect.Effect<string, GitLocalError>;
+  readonly currentBranch: (
+    repositoryPath: string
+  ) => Effect.Effect<string, GitLocalError>;
+  readonly setRemoteUrl: (
+    input: RemoteWithAuthInput
+  ) => Effect.Effect<string, GitLocalError>;
+}
+
+export class GitLocalRuntime extends Context.Service<
+  GitLocalRuntime,
+  GitLocalRuntimeShape
+>()("@code/primitives/git-local-runtime/GitLocalRuntime") {}
+
+export const makeGitLocalRuntimeLayer = (shell: Shell = nodeShell) =>
+  Layer.succeed(
+    GitLocalRuntime,
+    GitLocalRuntime.of({
+      addWorktree: (input) => addWorktree(shell, input),
+      clone: (input) => clone(shell, input),
+      commit: (input) => commit(shell, input),
+      currentBranch: (repositoryPath) => currentBranch(shell, repositoryPath),
+      push: (input) => push(shell, input),
+      setRemoteUrl: (input) => setRemoteUrl(shell, input),
+      shell,
+    })
+  );
diff --git a/packages/primitives/src/git-remote-runtime.test.ts b/packages/primitives/src/git-remote-runtime.test.ts
new file mode 100644
index 0000000..63a2eea
--- /dev/null
+++ b/packages/primitives/src/git-remote-runtime.test.ts
@@ -0,0 +1,124 @@
+import { Effect } from "effect";
+import { describe, expect, it } from "vitest";
+
+import {
+  createBranch,
+  createIssue,
+  createPullRequest,
+  getIssue,
+  listIssues,
+} from "./git-remote-runtime";
+import type { GitRemoteConfig, GitRemoteTransport } from "./git-remote-runtime";
+
+const config: GitRemoteConfig = {
+  baseUrl: "https://git.example.com",
+  owner: "puter",
+  repo: "zopu-code",
+  token: "secret",
+};
+
+const stubTransport = (
+  responder: (method: string, path: string, body: unknown) => unknown,
+  status = 200
+): GitRemoteTransport => ({
+  request: ({ body, method, url }) =>
+    Effect.sync(() => {
+      const path = url.replace(
+        `${config.baseUrl}/api/v1/repos/puter/zopu-code`,
+        ""
+      );
+      const result = responder(method, path, body);
+      return {
+        json: () => Promise.resolve(result),
+        status,
+      };
+    }),
+});
+
+const run = <A, E>(eff: Effect.Effect<A, E>) => Effect.runPromise(eff);
+
+describe("GitRemoteRuntime", () => {
+  it("creates an issue and maps Gitea fields", async () => {
+    const transport = stubTransport(() => ({
+      body: "the body",
+      html_url: "https://git.example.com/puter/zopu-code/issues/1",
+      number: 1,
+      state: "open",
+      title: "Add status control",
+    }));
+    const issue = await run(
+      createIssue(transport, config, {
+        body: "the body",
+        title: "Add status control",
+      })
+    );
+    expect(issue.number).toBe(1);
+    expect(issue.url).toContain("/issues/1");
+  });
+
+  it("maps 401 to Unauthorized", async () => {
+    const transport = stubTransport(() => ({}), 401);
+    await expect(run(listIssues(transport, config))).rejects.toMatchObject({
+      reason: "Unauthorized",
+    });
+  });
+
+  it("maps 404 to NotFound", async () => {
+    const transport = stubTransport(() => ({}), 404);
+    await expect(run(getIssue(transport, config, 7))).rejects.toMatchObject({
+      reason: "NotFound",
+    });
+  });
+
+  it("creates a branch", async () => {
+    const transport = stubTransport((_m, _p, body) => ({
+      name: (body as { new_branch_name: string }).new_branch_name,
+    }));
+    const branch = await run(
+      createBranch(transport, config, { name: "work/1/fix" })
+    );
+    expect(branch.name).toBe("work/1/fix");
+  });
+
+  it("creates a pull request and reads nested ref fields", async () => {
+    const transport = stubTransport(() => ({
+      base: { ref: "main" },
+      head: { ref: "work/1/fix" },
+      html_url: "https://git.example.com/puter/zopu-code/pulls/2",
+      number: 2,
+      state: "open",
+      title: "Fix thing",
+    }));
+    const pr = await run(
+      createPullRequest(transport, config, {
+        baseBranch: "main",
+        body: "",
+        branch: "work/1/fix",
+        title: "Fix thing",
+      })
+    );
+    expect(pr.number).toBe(2);
+    expect(pr.branch).toBe("work/1/fix");
+    expect(pr.baseBranch).toBe("main");
+  });
+
+  it("maps merged PR state", async () => {
+    const transport = stubTransport(() => ({
+      base: { ref: "main" },
+      head: { ref: "work/1/fix" },
+      merged: true,
+      number: 2,
+      state: "closed",
+      title: "x",
+    }));
+    const pr = await run(
+      createPullRequest(transport, config, {
+        baseBranch: "main",
+        body: "",
+        branch: "work/1/fix",
+        title: "x",
+      })
+    );
+    expect(pr.state).toBe("merged");
+  });
+});
diff --git a/packages/primitives/src/git-remote-runtime.ts b/packages/primitives/src/git-remote-runtime.ts
new file mode 100644
index 0000000..239db69
--- /dev/null
+++ b/packages/primitives/src/git-remote-runtime.ts
@@ -0,0 +1,367 @@
+/* eslint-disable max-classes-per-file -- the runtime service and its tagged error form one adapter contract. */
+import { Context, Effect, Layer, Schema } from "effect";
+
+const MeaningfulString = Schema.String.check(
+  Schema.makeFilter((value) => value.trim().length > 0, {
+    expected: "a non-empty string",
+  })
+);
+
+// ---------------------------------------------------------------------------
+// Configuration
+// ---------------------------------------------------------------------------
+
+export const GitRemoteConfig = Schema.Struct({
+  baseUrl: Schema.String,
+  owner: MeaningfulString,
+  repo: MeaningfulString,
+  token: MeaningfulString,
+});
+export type GitRemoteConfig = typeof GitRemoteConfig.Type;
+
+// ---------------------------------------------------------------------------
+// Value objects
+// ---------------------------------------------------------------------------
+
+export const RemoteIssue = Schema.Struct({
+  body: Schema.String,
+  number: Schema.Int.check(Schema.isGreaterThan(0)),
+  state: Schema.Literals(["open", "closed"]),
+  title: MeaningfulString,
+  url: Schema.String,
+});
+export type RemoteIssue = typeof RemoteIssue.Type;
+
+export const RemoteBranch = Schema.Struct({
+  name: MeaningfulString,
+});
+export type RemoteBranch = typeof RemoteBranch.Type;
+
+export const RemotePullRequest = Schema.Struct({
+  baseBranch: MeaningfulString,
+  branch: MeaningfulString,
+  number: Schema.Int.check(Schema.isGreaterThan(0)),
+  state: Schema.Literals(["open", "closed", "merged"]),
+  title: MeaningfulString,
+  url: Schema.String,
+});
+export type RemotePullRequest = typeof RemotePullRequest.Type;
+
+// ---------------------------------------------------------------------------
+// Errors
+// ---------------------------------------------------------------------------
+
+export const GitRemoteErrorReason = Schema.Literals([
+  "InvalidInput",
+  "Unauthorized",
+  "NotFound",
+  "Conflict",
+  "Unreachable",
+]);
+export type GitRemoteErrorReason = typeof GitRemoteErrorReason.Type;
+
+export class GitRemoteError extends Schema.TaggedErrorClass<GitRemoteError>()(
+  "GitRemoteError",
+  {
+    message: Schema.String,
+    reason: GitRemoteErrorReason,
+  }
+) {}
+
+// ---------------------------------------------------------------------------
+// Low-level transport: a tiny fetch wrapper that maps HTTP failures to the
+// tagged error. Kept as an injectable dependency so tests can stub the wire.
+// ---------------------------------------------------------------------------
+
+export interface GitRemoteTransport {
+  readonly request: (input: {
+    readonly body?: unknown;
+    readonly headers?: Readonly<Record<string, string>>;
+    readonly method: string;
+    readonly url: string;
+  }) => Effect.Effect<
+    { readonly status: number; readonly json: () => Promise<unknown> },
+    GitRemoteError
+  >;
+}
+
+const authHeaders = (token: string): Record<string, string> => ({
+  Authorization: `token ${token}`,
+  "Content-Type": "application/json",
+});
+
+const endpoint = (config: GitRemoteConfig, path: string): string =>
+  `${config.baseUrl.replace(/\/+$/u, "")}/api/v1/repos/${config.owner}/${config.repo}${path}`;
+
+const fromStatus = (status: number, fallback: string): GitRemoteError => {
+  if (status === 401 || status === 403) {
+    return new GitRemoteError({
+      message: "Unauthorized",
+      reason: "Unauthorized",
+    });
+  }
+  if (status === 404) {
+    return new GitRemoteError({ message: "Not found", reason: "NotFound" });
+  }
+  if (status === 409) {
+    return new GitRemoteError({ message: "Conflict", reason: "Conflict" });
+  }
+  if (status >= 500) {
+    return new GitRemoteError({ message: fallback, reason: "Unreachable" });
+  }
+  return new GitRemoteError({ message: fallback, reason: "InvalidInput" });
+};
+
+const request = (
+  transport: GitRemoteTransport,
+  config: GitRemoteConfig,
+  method: string,
+  path: string,
+  body?: unknown
+): Effect.Effect<unknown, GitRemoteError> =>
+  transport
+    .request({
+      body,
+      headers: authHeaders(config.token),
+      method,
+      url: endpoint(config, path),
+    })
+    .pipe(
+      Effect.flatMap((res) =>
+        Effect.gen(function* handleResponse() {
+          if (res.status >= 400) {
+            const detail = yield* Effect.tryPromise({
+              catch: () => null,
+              try: () => res.json(),
+            }).pipe(Effect.orElseSucceed(() => null));
+            const message =
+              detail && typeof detail === "object" && "message" in detail
+                ? String((detail as { message: unknown }).message)
+                : `Request ${method} ${path} failed with ${res.status}`;
+            return yield* Effect.fail(fromStatus(res.status, message));
+          }
+          return yield* Effect.tryPromise({
+            catch: (cause) =>
+              new GitRemoteError({
+                message: cause instanceof Error ? cause.message : "Bad JSON",
+                reason: "InvalidInput",
+              }),
+            try: () => res.json(),
+          });
+        })
+      )
+    );
+
+// ---------------------------------------------------------------------------
+// Operations
+// ---------------------------------------------------------------------------
+
+export interface CreateIssueInput {
+  readonly body: string;
+  readonly title: string;
+}
+
+export const createIssue = (
+  transport: GitRemoteTransport,
+  config: GitRemoteConfig,
+  input: CreateIssueInput
+): Effect.Effect<RemoteIssue, GitRemoteError> =>
+  Effect.gen(function* run() {
+    const raw = yield* request(transport, config, "POST", "/issues", {
+      body: input.body,
+      title: input.title,
+    });
+    return yield* Schema.decodeUnknownEffect(RemoteIssue)({
+      body: (raw as { body?: string }).body ?? "",
+      number: (raw as { number: number }).number,
+      state: (raw as { state: string }).state ?? "open",
+      title: (raw as { title: string }).title,
+      url: (raw as { html_url?: string }).html_url ?? "",
+    }).pipe(
+      Effect.mapError(
+        (cause) =>
+          new GitRemoteError({ message: cause.message, reason: "InvalidInput" })
+      )
+    );
+  });
+
+export interface CreateBranchInput {
+  readonly from?: string;
+  readonly name: string;
+}
+
+export const createBranch = (
+  transport: GitRemoteTransport,
+  config: GitRemoteConfig,
+  input: CreateBranchInput
+): Effect.Effect<RemoteBranch, GitRemoteError> =>
+  Effect.gen(function* run() {
+    const raw = yield* request(transport, config, "POST", "/branches", {
+      new_branch_name: input.name,
+      old_ref_name: input.from ?? "main",
+    });
+    return yield* Schema.decodeUnknownEffect(RemoteBranch)({
+      name: (raw as { name: string }).name,
+    }).pipe(
+      Effect.mapError(
+        (cause) =>
+          new GitRemoteError({ message: cause.message, reason: "InvalidInput" })
+      )
+    );
+  });
+
+export interface CreatePullRequestInput {
+  readonly baseBranch: string;
+  readonly body: string;
+  readonly branch: string;
+  readonly title: string;
+}
+
+export const createPullRequest = (
+  transport: GitRemoteTransport,
+  config: GitRemoteConfig,
+  input: CreatePullRequestInput
+): Effect.Effect<RemotePullRequest, GitRemoteError> =>
+  Effect.gen(function* run() {
+    const raw = yield* request(transport, config, "POST", "/pulls", {
+      base: input.baseBranch,
+      body: input.body,
+      head: input.branch,
+      title: input.title,
+    });
+    const merged = Boolean((raw as { merged?: boolean }).merged);
+    return yield* Schema.decodeUnknownEffect(RemotePullRequest)({
+      baseBranch:
+        (raw as { base?: { ref?: string } }).base?.ref ?? input.baseBranch,
+      branch: (raw as { head?: { ref?: string } }).head?.ref ?? input.branch,
+      number: (raw as { number: number }).number,
+      state: merged ? "merged" : ((raw as { state?: string }).state ?? "open"),
+      title: (raw as { title: string }).title,
+      url: (raw as { html_url?: string }).html_url ?? "",
+    }).pipe(
+      Effect.mapError(
+        (cause) =>
+          new GitRemoteError({ message: cause.message, reason: "InvalidInput" })
+      )
+    );
+  });
+
+export const listIssues = (
+  transport: GitRemoteTransport,
+  config: GitRemoteConfig
+): Effect.Effect<readonly RemoteIssue[], GitRemoteError> =>
+  Effect.gen(function* run() {
+    const raw = yield* request(
+      transport,
+      config,
+      "GET",
+      "/issues?state=open&type=issues"
+    );
+    const list = (raw as Record<string, unknown>[]) ?? [];
+    const decoded = list.map((entry) =>
+      Schema.decodeUnknownEffect(RemoteIssue)({
+        body: (entry.body as string) ?? "",
+        number: entry.number as number,
+        state: (entry.state as string) ?? "open",
+        title: entry.title as string,
+        url: (entry.html_url as string) ?? "",
+      }).pipe(
+        Effect.mapError(
+          (cause) =>
+            new GitRemoteError({
+              message: cause.message,
+              reason: "InvalidInput",
+            })
+        )
+      )
+    );
+    return yield* Effect.all(decoded);
+  });
+
+export const getIssue = (
+  transport: GitRemoteTransport,
+  config: GitRemoteConfig,
+  number: number
+): Effect.Effect<RemoteIssue, GitRemoteError> =>
+  Effect.gen(function* run() {
+    const raw = yield* request(transport, config, "GET", `/issues/${number}`);
+    return yield* Schema.decodeUnknownEffect(RemoteIssue)({
+      body: (raw as { body?: string }).body ?? "",
+      number: (raw as { number: number }).number,
+      state: (raw as { state: string }).state ?? "open",
+      title: (raw as { title: string }).title,
+      url: (raw as { html_url?: string }).html_url ?? "",
+    }).pipe(
+      Effect.mapError(
+        (cause) =>
+          new GitRemoteError({ message: cause.message, reason: "InvalidInput" })
+      )
+    );
+  });
+
+// ---------------------------------------------------------------------------
+// Fetch-backed transport (default) + service
+// ---------------------------------------------------------------------------
+
+export const fetchTransport: GitRemoteTransport = {
+  request: ({ body, headers, method, url }) =>
+    Effect.tryPromise({
+      catch: (cause) =>
+        new GitRemoteError({
+          message: cause instanceof Error ? cause.message : "Network error",
+          reason: "Unreachable",
+        }),
+      try: async () => {
+        const init: RequestInit = { headers: headers ?? {}, method };
+        if (body !== undefined && method !== "GET" && method !== "HEAD") {
+          init.body = JSON.stringify(body);
+        }
+        const res = await fetch(url, init);
+        return {
+          json: () => res.json() as Promise<unknown>,
+          status: res.status,
+        };
+      },
+    }),
+};
+
+interface GitRemoteRuntimeShape {
+  readonly config: GitRemoteConfig;
+  readonly transport: GitRemoteTransport;
+  readonly createIssue: (
+    input: CreateIssueInput
+  ) => Effect.Effect<RemoteIssue, GitRemoteError>;
+  readonly createBranch: (
+    input: CreateBranchInput
+  ) => Effect.Effect<RemoteBranch, GitRemoteError>;
+  readonly createPullRequest: (
+    input: CreatePullRequestInput
+  ) => Effect.Effect<RemotePullRequest, GitRemoteError>;
+  readonly listIssues: () => Effect.Effect<
+    readonly RemoteIssue[],
+    GitRemoteError
+  >;
+  readonly getIssue: (
+    number: number
+  ) => Effect.Effect<RemoteIssue, GitRemoteError>;
+}
+
+export class GitRemoteRuntime extends Context.Service<
+  GitRemoteRuntime,
+  GitRemoteRuntimeShape
+>()("@code/primitives/git-remote-runtime/GitRemoteRuntime") {}
+
+export const makeGitRemoteRuntimeLayer = (config: GitRemoteConfig) =>
+  Layer.succeed(
+    GitRemoteRuntime,
+    GitRemoteRuntime.of({
+      config,
+      createBranch: (input) => createBranch(fetchTransport, config, input),
+      createIssue: (input) => createIssue(fetchTransport, config, input),
+      createPullRequest: (input) =>
+        createPullRequest(fetchTransport, config, input),
+      getIssue: (number) => getIssue(fetchTransport, config, number),
+      listIssues: () => listIssues(fetchTransport, config),
+      transport: fetchTransport,
+    })
+  );
diff --git a/packages/primitives/src/index.ts b/packages/primitives/src/index.ts
index 600f61c..6b835ea 100644
--- a/packages/primitives/src/index.ts
+++ b/packages/primitives/src/index.ts
@@ -1,6 +1,8 @@
 // oxlint-disable-next-line no-barrel-file -- The package root intentionally exposes its public modules.
 export * from "./agent-os";
 export * from "./git";
+export * from "./git-local-runtime";
+export * from "./git-remote-runtime";
 export * from "./project";
 export * from "./project-issue";
 export * from "./project-workspace";