v0.4.1 — P0-P2 Reliability Audit

P0 — Destructive fixes

• Version sync: __init__.py 0.3.1 → 0.4.1 (was showing wrong version to MCP servers)
• Thread-safe Storage: per-thread SQLite connections + WAL mode; all reads now under lock (was crashing on concurrent TUI + Telegram access)
• Windows compat: signal.pause() replaced with threading.Event().wait() (was exiting immediately on Windows)
• Cron stop: stop_event promoted to instance attribute for immediate scheduler shutdown

P1 — Important fixes

• Router now catches AnthropicError (Anthropic provider fallback was broken)
• 7 modules now catch LLMError+AnthropicError (was only RuntimeError/OSError)
• Context compaction uses Router.chat() with fallback chain + rate limiter
• Skill evolution: dedup check prevents overwriting promoted skills; now passes LLM for prose refinement
• Health endpoint: caches Runtime across requests (was rebuilding everything on every probe)
• Sub-agents now execute tool calls in a loop (up to 3 rounds) instead of single-shot

P2 — Quality improvements

• Token estimation consistent at ~3.2 chars/token everywhere
• pulse init now lists Anthropic as a provider option
• MemoryStore file appends guarded by threading.Lock
• Observability.events capped at 5000 (prevents memory leak in long-running services)
• Cron */N step syntax now actually matches (was parsed but never evaluated)
• decompose heuristic handles numbered lists + comma-separated items

138/138 tests pass · Ruff lint clean