chore(cli-v2): un-ignore CLI source tree for binary release workflow

The CLI source (242 files, ~14k lines) was gitignored during the
earlier cli→cli-v2 reorg so only the published npm package carried it.
That blocks the GitHub Actions release workflow (release-cli.yml),
which clones the repo fresh on each runner and needs the source to
compile binaries via `bun build --compile`.

Moves the gitignore from root-level to `apps/cli-v2/.gitignore` with
only the usual build artefacts excluded (node_modules, dist, .turbo,
.cache). Source is now in git at apps/cli-v2/src/.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/cli-v2/tests/unit/templates.test.ts

@@ -0,0 +1,30 @@
+import { describe, it, expect } from "vitest";
+import { TEMPLATES, listTemplates, getTemplate } from "~/templates/index.js";
+
+describe("templates", () => {
+  it("has 5 templates", () => {
+    expect(Object.keys(TEMPLATES)).toHaveLength(5);
+    expect(listTemplates()).toHaveLength(5);
+  });
+
+  it("each template has required fields", () => {
+    for (const t of listTemplates()) {
+      expect(t.name).toBeTruthy();
+      expect(t.description).toBeTruthy();
+      expect(Array.isArray(t.groups)).toBe(true);
+      expect(typeof t.stateKeys).toBe("object");
+      expect(Array.isArray(t.suggestedRoles)).toBe(true);
+      expect(t.systemPromptHint).toBeTruthy();
+    }
+  });
+
+  it("getTemplate returns correct template", () => {
+    const t = getTemplate("dev-team");
+    expect(t).toBeDefined();
+    expect(t!.name).toBe("Dev Team");
+  });
+
+  it("getTemplate returns undefined for unknown", () => {
+    expect(getTemplate("nonexistent")).toBeUndefined();
+  });
+});