Real web scenario comparison; fresh synthetic data on each commit.

Base 49eb9c8adc7ee4d4789e5e65fda7cfa7fba87da7
    threadId: 'mcp:e4361745-172b-41c4-aa17-d1f9b469855a',
    error: {
      _tag: 'GitCommandError',
      operation: 'StorageCleanup.cleanupGit',
      command: 'git worktree remove',
      cwd: '<scenario-path>',
      detail: "fatal: '<scenario-path>' is not a working tree"
    }
    threadId: 'mcp:e4361745-172b-41c4-aa17-d1f9b469855a',
    error: {
      _tag: 'GitCommandError',
      operation: 'StorageCleanup.cleanupGit',
      command: 'git worktree remove',
      cwd: '<scenario-path>',
      detail: "fatal: '<scenario-path>' is not a working tree"
    }
    threadId: 'mcp:02ac914d-49f1-4526-85ea-ed53efbfcae7',
    error: {
      _tag: 'GitCommandError',
      operation: 'StorageCleanup.cleanupGit',
      command: 'git worktree remove',
      cwd: '<scenario-path>',
      detail: "fatal: '<scenario-path>' is not a working tree"
    }
Observed after manual cleanup: worktreeDirectoryExists=true; registeredInCloneA=true.

Head cf12d021b6c8f8997202df1074b1ef9efe0d2f17
Observed after manual cleanup: worktreeDirectoryExists=false; registeredInCloneA=false.
Web result: 1 removed, 0 kept.
Scenario proof exit: 0.