task-master-ai@0.42.0

### Minor Changes

-   [#1533](https://github.com/eyaltoledano/claude-task-master/pull/1533) [`6c3a92c`](https://github.com/eyaltoledano/claude-task-master/commit/6c3a92c439d4573ff5046e3d251a4a26d85d0deb) Thanks [@bjcoombs](https://github.com/bjcoombs)! - Add --ready and --blocking filters to list command for identifying parallelizable tasks
    -   Add `--ready` filter to show only tasks with satisfied dependencies (ready to work on)
    -   Add `--blocking` filter to show only tasks that block other tasks
    -   Combine `--ready --blocking` to find high-impact tasks (ready AND blocking others)
    -   Add "Blocks" column to task table showing which tasks depend on each task
    -   Blocks field included in JSON output for programmatic access
    -   Add "Ready" column to `tags` command showing count of ready tasks per tag
    -   Add `--ready` filter to `tags` command to show only tags with available work
    -   Excludes deferred/blocked tasks from ready count (only actionable statuses)
    -   Add `--all-tags` option to list ready tasks across all tags (use with `--ready`)
    -   Tag column shown as first column when using `--all-tags` for easy scanning

### Patch Changes

-   [#1569](https://github.com/eyaltoledano/claude-task-master/pull/1569) [`4cfde1c`](https://github.com/eyaltoledano/claude-task-master/commit/4cfde1c3d54b94701e0fcfc8dbdedbc3bbaf4339) Thanks [@bjcoombs](https://github.com/bjcoombs)! - Improve concurrency safety by adopting modifyJson pattern in file-storage
    -   Refactor saveTasks, createTag, deleteTag, renameTag to use modifyJson for atomic read-modify-write operations
    -   This prevents lost updates when multiple processes concurrently modify tasks.json
    -   Complements the cross-process file locking added in PR #1566

-   [#1566](https://github.com/eyaltoledano/claude-task-master/pull/1566) [`3cc6174`](https://github.com/eyaltoledano/claude-task-master/commit/3cc6174b471fc1ea7f12955095d0d35b4dc5904c) Thanks [@bjcoombs](https://github.com/bjcoombs)! - Fix race condition when multiple Claude Code windows write to tasks.json simultaneously

    -   Add cross-process file locking to prevent concurrent write collisions
    -   Implement atomic writes using temp file + rename pattern to prevent partial writes
    -   Re-read file inside lock to get current state, preventing lost updates from stale snapshots
    -   Add stale lock detection and automatic cleanup (10-second timeout)
    -   Export `withFileLock` and `withFileLockSync` utilities for use by other modules

    This fix prevents data loss that could occur when multiple Task Master instances (e.g., multiple Claude Code windows) access the same tasks.json file concurrently.

-   [#1576](https://github.com/eyaltoledano/claude-task-master/pull/1576) [`097c8ed`](https://github.com/eyaltoledano/claude-task-master/commit/097c8edcb0ca065218e9b51758ad370ac7475f1a) Thanks [@Crunchyman-ralph](https://github.com/Crunchyman-ralph)! - Improve loop command error handling and use dangerously-skip-permissions
    -   Add proper spawn error handling (ENOENT, EACCES) with actionable messages
    -   Return error info from checkSandboxAuth and runInteractiveAuth instead of silent failures
    -   Use --dangerously-skip-permissions for unattended loop execution
    -   Fix null exit code masking issue

-   [#1577](https://github.com/eyaltoledano/claude-task-master/pull/1577) [`e762e4f`](https://github.com/eyaltoledano/claude-task-master/commit/e762e4f64608a77d248ac8ce5eeb218000b51907) Thanks [@Crunchyman-ralph](https://github.com/Crunchyman-ralph)! - Make Docker sandbox mode opt-in for loop command
    -   Add `--sandbox` flag to `task-master loop` (default: use plain `claude -p`)
    -   Preserve progress.txt between runs (append instead of overwrite)
    -   Display execution mode in loop startup output

-   [#1580](https://github.com/eyaltoledano/claude-task-master/pull/1580) [`940ab58`](https://github.com/eyaltoledano/claude-task-master/commit/940ab587e50cff43c3a2639bbbd210fdd577c3f1) Thanks [@Crunchyman-ralph](https://github.com/Crunchyman-ralph)! - Update Codex CLI supported models to match current available models
    -   Remove deprecated models: gpt-5, gpt-5-codex, gpt-5.1
    -   Add gpt-5.2-codex as the current default model
    -   Add gpt-5.1-codex-mini for faster, cheaper option
    -   Keep gpt-5.1-codex-max and gpt-5.2