fix(ci): simplify test runner to plain bun test by fixing mock.module() leakage

- Add afterAll(() => { mock.restore() }) to 52 test files missing cleanup
- Rewrite create-tool-guard-hooks.test.ts to use spyOn instead of barrel mock
- Fix skill-mcp-manager OAuth tests with missing mockTokens/mockLogin definitions
- Fix start-work hook: show worktree active block on resume with existing worktree_path
- Extract createWorktreeActiveBlock to worktree-block.ts to avoid circular import
- Replace 80-line isolated test runner CI config with single `bun test` command

src/hooks/auto-update-checker/checker/sync-package-json.test.ts

@@ -1,4 +1,4 @@
-import { afterEach, beforeEach, describe, expect, it, mock } from "bun:test"
+import { afterAll, afterEach, beforeEach, describe, expect, it, mock } from "bun:test"
 import { existsSync, mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs"
 import { join } from "node:path"
 import type { PluginEntryInfo } from "./plugin-entry"
@@ -22,6 +22,10 @@ mock.module("../../../shared/logger", () => ({
   log: () => {},
 }))
 
+afterAll(() => {
+  mock.restore()
+})
+
 function resetTestCache(currentVersion = "3.10.0"): void {
   if (existsSync(TEST_CACHE_DIR)) {
     rmSync(TEST_CACHE_DIR, { recursive: true, force: true })