v0.1.0

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.1.0] - 2026-03-12
+
+Initial release — Claude Code-style task tracking and coordination for pi.
+
+### Added
+- **6 LLM-callable tools** — `TaskCreate`, `TaskList`, `TaskGet`, `TaskUpdate`, `TaskOutput`, `TaskStop` — matching Claude Code's exact tool specs, descriptions, and schemas.
+- **System-reminder injection** — periodic `<system-reminder>` nudges appended to non-task tool results when tasks exist but task tools haven't been used for 4+ turns. Matches Claude Code's host-level reminder mechanism.
+- **Prompt guidelines** — `promptGuidelines` on TaskCreate injects persistent guidance into the system prompt, nudging the LLM to use task tools for complex work.
+- **Task state in system prompt** — `before_agent_start` event appends current task state to the system prompt on every agent loop, ensuring task awareness survives context compaction.
+- **Persistent widget** — live task list above editor with `✔` (completed, strikethrough + dim), `◼` (in-progress), `◻` (pending), animated star spinner (`✳✽`) for active tasks with elapsed time and token counts (e.g., `✳ Running tests… (2m 49s · ↑ 4.1k ↓ 1.2k)`).
+- **Multiple parallel active tasks** — widget supports multiple simultaneous spinners.
+- **`/tasks` command** — interactive menu: view tasks with actions (start, complete, delete), create tasks, clear completed.
+- **Bidirectional dependency management** — `addBlocks`/`addBlockedBy` maintain both sides automatically. Edges cleaned up on task deletion.
+- **Dependency warnings** — cycles, self-dependencies, and dangling references produce warnings in TaskUpdate responses. Edges are still stored, matching Claude Code's permissive behavior.
+- **File-backed shared storage** — set `PI_TASK_LIST_ID` env var for multi-session coordination at `~/.pi/tasks/<id>.json`. File locking with stale-lock detection prevents race conditions.
+- **In-memory session-scoped mode** — default when no env var is set, zero disk I/O.
+- **Background process tracker** — output buffering (stdout + stderr), waiter notification, graceful stop with timeout escalation (SIGTERM → 5s → SIGKILL).
+- **78 unit tests** — task store CRUD, dependencies, warnings, file persistence; widget rendering, icons, spinners, token/duration formatting; process tracker lifecycle.
+
+[0.1.0]: https://github.com/tintinweb/pi-tasks/releases/tag/v0.1.0