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/directory-agents-injector/injector.test.ts

@@ -3,7 +3,7 @@ import { mkdirSync, rmSync, writeFileSync } from "node:fs"
 import { tmpdir } from "node:os"
 import { join } from "node:path"
 import type { PluginInput } from "@opencode-ai/plugin"
-import { afterEach, beforeEach, describe, expect, it, mock } from "bun:test"
+import { afterAll, afterEach, beforeEach, describe, expect, it, mock } from "bun:test"
 
 const storageMaps = new Map<string, Set<string>>()
 
@@ -22,6 +22,10 @@ mock.module("./storage", () => ({
   },
 }))
 
+afterAll(() => {
+  mock.restore()
+})
+
 const truncator = {
   truncate: async (_sessionID: string, content: string) => ({ result: content, truncated: false }),
   getUsage: async (_sessionID: string) => null,