v0.7.0 — Mémoire et écosystème

Two big themes: cats now remember you across sessions and the
ecosystem opens up for community character packs + shell-script
integration. Five PRs landed (#26-#30) closing issues #5 and #9.

🧠 AI personality depth (#5)

• Long-term memory — each cat keeps a per-cat sqlite store of
  memorable facts at `~/.config/catai/memory.db`. Every 20 chat
  exchanges, the AI extracts 0-3 facts about you. New messages
  retrieve the top facts via keyword overlap and inject them into
  the system prompt as 'things you remember'. No embeddings,
  pure stdlib + sqlite. (#29)
• Inter-cat gossip — when two cats encounter on the canvas,
  they trade one random fact each. Mandarine knows your name →
  she meets Ombre → Ombre also knows. (#30)

🛠 Dev & ecosystem (#9)

• Plugin API for character packs — drop a folder under
  `~/.local/share/catai/characters/<char_id>/` and CATAI
  auto-loads it as a new playable cat. Lets contributors ship
  custom catset characters without forking the repo. (#28)
• Scriptable hooks — opt-in Unix socket at
  `$XDG_RUNTIME_DIR/catai.sock` for shell scripts:
  ```bash
  make test && echo 'egg meow_party' | nc -U $XDG_RUNTIME_DIR/catai.sock
  ```
  Curated commands: status, list_cats, list_eggs, meow, egg,
  notify, help. (#27)
• Local metrics dashboard — opt-in privacy-first stats tracker.
  Counts chats, eggs, love encounters, pets per cat. Settings panel
  shows live summary with top petted cats and top eggs. Zero
  telemetry. (#26)

Install / Upgrade

```bash
pip install --user --upgrade 'catai-linux[voice]'
```

If you're already on v0.6.2 or later, the auto-updater
(installed in v0.6.2) will pick this up automatically on your
next CATAI launch — no manual upgrade needed.

See README for full changelog.