Add fullscreen difit integration

.codex/prompts/restart-t3code.md

@@ -0,0 +1,23 @@
+---
+description: Rebuild and restart the PM2-managed t3code app for this repo.
+argument-hint: optional target: web or dev
+---
+
+# Restart T3 Code
+
+Rebuild and restart the PM2-managed `t3code` processes for this repository.
+
+When you run this command:
+
+1. Work from the repo root.
+2. Inspect the optional argument.
+3. If no argument is provided, or the argument is `web`, run `bun run rebuild:restart -- web`.
+4. If the argument is `dev`, run `bun run rebuild:restart -- dev`.
+5. Report which target was restarted and include the relevant PM2 process names.
+
+Target meanings:
+
+- `web`: rebuilds `apps/web` and restarts the Cloudflare/tunnel-backed PM2 app `t3code-web`
+- `dev`: restarts the local PM2 dev apps `t3code-dev-server` and `t3code-dev-web`
+
+Do not make unrelated code changes as part of this command.

apps/server/package.json

@@ -35,6 +35,7 @@
     "@effect/language-service": "catalog:",
     "@effect/vitest": "catalog:",
     "@t3tools/contracts": "workspace:*",
+    "@t3tools/plugin-sdk": "workspace:*",
     "@t3tools/shared": "workspace:*",
     "@t3tools/web": "workspace:*",
     "@types/bun": "catalog:",

apps/server/src/difitManager.test.ts

@@ -0,0 +1,87 @@
+import { describe, expect, it } from "vitest";
+
+import { ProjectId, ThreadId, type OrchestrationReadModel } from "@t3tools/contracts";
+import { resolveDifitThreadCwd } from "./difitManager";
+
+function makeSnapshot(): OrchestrationReadModel {
+  return {
+    snapshotSequence: 1,
+    updatedAt: "2026-03-23T00:00:00.000Z",
+    projects: [
+      {
+        id: ProjectId.makeUnsafe("project-1"),
+        title: "Project",
+        workspaceRoot: "/repo/root",
+        defaultModel: null,
+        scripts: [],
+        createdAt: "2026-03-23T00:00:00.000Z",
+        updatedAt: "2026-03-23T00:00:00.000Z",
+        deletedAt: null,
+      },
+    ],
+    threads: [
+      {
+        id: ThreadId.makeUnsafe("thread-1"),
+        projectId: ProjectId.makeUnsafe("project-1"),
+        title: "Thread",
+        model: "gpt-5-codex",
+        runtimeMode: "full-access",
+        interactionMode: "default",
+        branch: null,
+        worktreePath: "/repo/worktrees/feature-a",
+        latestTurn: null,
+        createdAt: "2026-03-23T00:00:00.000Z",
+        updatedAt: "2026-03-23T00:00:00.000Z",
+        deletedAt: null,
+        messages: [],
+        proposedPlans: [],
+        activities: [],
+        checkpoints: [],
+        session: null,
+      },
+      {
+        id: ThreadId.makeUnsafe("thread-2"),
+        projectId: ProjectId.makeUnsafe("project-1"),
+        title: "Thread 2",
+        model: "gpt-5-codex",
+        runtimeMode: "full-access",
+        interactionMode: "default",
+        branch: null,
+        worktreePath: null,
+        latestTurn: null,
+        createdAt: "2026-03-23T00:00:00.000Z",
+        updatedAt: "2026-03-23T00:00:00.000Z",
+        deletedAt: null,
+        messages: [],
+        proposedPlans: [],
+        activities: [],
+        checkpoints: [],
+        session: null,
+      },
+    ],
+  };
+}
+
+describe("resolveDifitThreadCwd", () => {
+  it("prefers thread worktree paths", () => {
+    expect(resolveDifitThreadCwd(makeSnapshot(), "thread-1")).toEqual({
+      cwd: "/repo/worktrees/feature-a",
+      source: "worktree",
+    });
+  });
+
+  it("falls back to project workspace root", () => {
+    expect(resolveDifitThreadCwd(makeSnapshot(), "thread-2")).toEqual({
+      cwd: "/repo/root",
+      source: "project",
+    });
+  });
+
+  it("returns thread_not_found for unknown threads", () => {
+    expect(resolveDifitThreadCwd(makeSnapshot(), "thread-404")).toEqual({
+      cwd: null,
+      source: "none",
+      reason: "thread_not_found",
+    });
+  });
+});