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/tools/lsp/client.test.ts

@@ -2,7 +2,7 @@ import { mkdtempSync, rmSync, writeFileSync } from "node:fs"
 import { join } from "node:path"
 import { tmpdir } from "node:os"
 
-import { describe, it, expect, spyOn, mock, beforeEach, afterEach } from "bun:test"
+import { describe, it, expect, spyOn, mock, beforeEach, afterEach, afterAll } from "bun:test"
 
 mock.module("vscode-jsonrpc/node", () => ({
   createMessageConnection: () => {
@@ -12,6 +12,8 @@ mock.module("vscode-jsonrpc/node", () => ({
   StreamMessageWriter: function StreamMessageWriter() {},
 }))
 
+afterAll(() => { mock.restore() })
+
 import { LSPClient, lspManager, validateCwd } from "./client"
 import type { ResolvedServer } from "./types"