refactor(agent-dispatcher): split into 4 focused modules (SOLID Phase 2)

v2/src/lib/utils/worktree-detection.test.ts

@@ -0,0 +1,28 @@
+import { describe, it, expect } from 'vitest';
+import { detectWorktreeFromCwd } from './worktree-detection';
+
+describe('detectWorktreeFromCwd', () => {
+  it('detects Claude Code worktree path', () => {
+    const result = detectWorktreeFromCwd('/home/user/project/.claude/worktrees/my-session');
+    expect(result).toBe('/.claude/worktrees/my-session');
+  });
+
+  it('detects Codex worktree path', () => {
+    const result = detectWorktreeFromCwd('/home/user/project/.codex/worktrees/task-1');
+    expect(result).toBe('/.codex/worktrees/task-1');
+  });
+
+  it('detects Cursor worktree path', () => {
+    const result = detectWorktreeFromCwd('/home/user/project/.cursor/worktrees/feature-x');
+    expect(result).toBe('/.cursor/worktrees/feature-x');
+  });
+
+  it('returns null for non-worktree CWD', () => {
+    expect(detectWorktreeFromCwd('/home/user/project')).toBeNull();
+    expect(detectWorktreeFromCwd('/tmp/work')).toBeNull();
+  });
+
+  it('returns null for empty string', () => {
+    expect(detectWorktreeFromCwd('')).toBeNull();
+  });
+});