TODO Tracker

Maintain a portable Markdown task file without a service or database. Use the bundled script for every operation; do not edit task lines with ad hoc regex commands.

Runtime requirements: Bash and standard awk, cp, chmod, mkdir, mktemp, and mv utilities. Tasks are stored in a user-configurable local Markdown file.

File and Script

• TODO_FILE selects the task file. Default: TODO.md in the current workspace.
• Always invoke the bundled script through {baseDir} so execution does not depend on the current directory.
• Read operations do not create a file.
• Writes use an adjacent lock, atomic same-directory renames, mode 600, and a recoverable previous-state backup at ${TODO_FILE}.bak.
• ${TODO_FILE}.next-id is an adjacent mode-600 monotonic ID counter. Keep it with the task file when moving or restoring the tracker; backup rotation must not replace or delete it.

bash
TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" list

Do not use a machine-specific path. Quote TODO_FILE, IDs, and item text.

Stable Identity

New tasks receive monotonic IDs such as T000001. Task text is matched literally and exactly, never as a regex or substring.

• Under the same writer lock, the script bootstraps the counter from the current task file, ${TODO_FILE}.bak, and any valid existing counter. It reserves and atomically persists the next counter value before publishing a task-file mutation, so a crash may create an ID gap but cannot reuse an ID.
• Only the structured ID field immediately after a task checkbox participates in counter bootstrapping. ID-looking text inside a task title remains literal task content and never advances the counter.
• A missing counter is created safely on the next write. A corrupt, symbolic-link, non-regular, or non-0600 counter fails closed; do not delete or reset it to bypass the check.
• Prefer an ID for done and always use an ID for approved removal.
• An exact-text target must match one task only.
• Duplicate open task text is rejected.
• An ambiguous exact-text target is rejected and the script reports the matching IDs.
• On the first operation that must resolve or mutate a legacy file, task lines without IDs are assigned deterministic IDs under the writer lock and the migration is persisted atomically; the original remains in the backup. A removal preview can trigger this recoverable metadata migration even though it removes no task.

Commands

Read

bash
TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" list
TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" list high
TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" summary

If the file does not exist, list reports that fact and summary returns zero counts. Neither creates state.

Add

bash
TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" add high "Review launch checklist"

Priority must be high, medium, or low. Capture the returned stable ID.

Complete

bash
TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" done T000001

Exact text is accepted only when it identifies one open task. Completion preserves the stable ID and moves the task to Done.

Remove

Removal is destructive and requires an exact preview plus action-time approval.

1. Resolve and preview without removing the task. For a legacy file, this first operation may atomically persist stable IDs and the adjacent monotonic counter before returning the preview. The pre-migration file remains in ${TODO_FILE}.bak, and no task is removed:

bash TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" remove "exact task text"

The command exits without removal and prints the exact stable ID. Repeating the operation uses the persisted ID rather than migrating or advancing the counter again.

1. Show the user that ID and task text. Ask for approval to remove that exact task.
2. Only after approval, run the command contract naming and confirming the same ID:

bash TODO_FILE="$PWD/TODO.md" bash "{baseDir}/scripts/todo.sh" remove T000001 --confirm T000001

Never infer approval from a partial name, prior unrelated removal, or a bulk request. Remove tasks one exact stable ID at a time.

Heartbeat

Heartbeat access is off by default. Enable it only when the user explicitly opts in by configuring TODO_HEARTBEAT_ENABLED=1 for that heartbeat workflow.

bash
TODO_FILE="$PWD/TODO.md" TODO_HEARTBEAT_ENABLED=1 \
  bash "{baseDir}/scripts/todo.sh" heartbeat

Heartbeat output contains counts only: total, high, medium, low, and stale. It never prints task titles or notes. Do not create a schedule merely because this skill is installed.

File Format

markdown
# TODO Tracker

*Last updated: 2026-08-29*

## 🔴 High Priority
- [ ] [T000001] Review launch checklist (added: 2026-08-29)

## 🟡 Medium Priority

## 🟢 Nice to Have

## ✅ Done
- [x] [T000002] Verify release notes (done: 2026-08-29)

If a write fails because the lock exists, do not remove the lock while another process may be active. Investigate the writer and retry only after the lock is known to be stale.