chore(release): add changesets for 0.5.0 and bump codex version test

- Add changesets for #1643 (orchestrator worktree adoption), #1549
  (sidebar empty-state), and #1608 (terminal attach + mux routing).
- Update agent-codex package-version.test.ts expectation from 0.4.0
  to 0.5.0 so the test no longer fails after the upcoming version bump.

.changeset/adopt-orphaned-orchestrator-worktrees.md

@@ -0,0 +1,5 @@
+---
+"@aoagents/ao-core": patch
+---
+
+Adopt existing managed orchestrator worktrees instead of failing to create a fresh one. Previously, a leftover worktree from a prior run could block `spawnOrchestrator` with a "worktree already exists" error; spawn now detects and reuses the matching managed worktree. Also normalizes CRLF in `parseWorktreeList` (Windows), filters prunable/deleted entries in `findManagedWorkspace`, and applies `GIT_TIMEOUT` to all internal `git()` calls.

.changeset/fix-terminal-attach-mux-routing.md

@@ -0,0 +1,5 @@
+---
+"@aoagents/ao-web": patch
+---
+
+Fix direct terminal attach and keep mux routing project-scoped. Switches `resolveExactTmuxName` from `execFileSync` to a promisified `execFile` so slow tmux calls no longer stall the WebSocket message handler, and propagates async through `TerminalManager.open` / `subscribe` and the pty `onExit` reattach path. Also drops a duplicate `.kanban-board` grid rule in `globals.css`.

.changeset/sidebar-empty-state.md

@@ -0,0 +1,5 @@
+---
+"@aoagents/ao-web": patch
+---
+
+Render an empty-state in the project sidebar when no projects are configured. Fresh-install users previously saw a blank sidebar with no way to open the Add Project modal; the sidebar now shows a small empty-state with the `+` button wired up.

packages/plugins/agent-codex/src/package-version.test.ts

@@ -2,10 +2,10 @@ import { describe, expect, it } from "vitest";
 import { readFileSync } from "node:fs";
 
 describe("package manifest version", () => {
-  it("is bumped to 0.4.0", () => {
+  it("is bumped to 0.5.0", () => {
     const packageJsonUrl = new URL("../package.json", import.meta.url);
     const packageJson = JSON.parse(readFileSync(packageJsonUrl, "utf8")) as { version?: string };
 
-    expect(packageJson.version).toBe("0.4.0");
+    expect(packageJson.version).toBe("0.5.0");
   });
 });