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/start-work/context-info-builder.ts

@@ -13,6 +13,7 @@ import {
   writeBoulderState,
 } from "../../features/boulder-state"
 import { log } from "../../shared/logger"
+import { createWorktreeActiveBlock } from "./worktree-block"
 import type { PluginInput } from "@opencode-ai/plugin"
 import { HOOK_NAME } from "./start-work-hook"
 
@@ -158,7 +159,9 @@ Looking for new plans...`
     appendSessionId(directory, sessionId)
   }
 
-  const worktreeDisplay = effectiveWorktree ? worktreeBlock.replace(worktreePath ?? "", effectiveWorktree) : worktreeBlock
+  const worktreeDisplay = effectiveWorktree
+    ? (worktreeBlock || createWorktreeActiveBlock(effectiveWorktree))
+    : worktreeBlock
 
   return `
 ## Active Work Session Found