Add Wordle, welcome system, integrations, and update roadmap

- Add Wordle game engine with daily puzzles, hard mode, stats, and share
- Add welcome module (react-to-join onboarding, Space join DMs)
- Add Ollama LLM integration (!ask), Minecraft RCON whitelist (!minecraft)
- Add !trivia, !champion, !agent, !health commands
- Add DM routing for Wordle (games in DMs, share to public room)
- Update README: reflect Phase 4 completion, hookshot webhook setup,
  infrastructure migration (LXC 151/109 to large1), Spam and Stuff room,
  all 12 webhook connections with UUIDs and transform notes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

commands.py

@@ -617,3 +617,14 @@ async def cmd_health(client: AsyncClient, room_id: str, sender: str, args: str):
         f"<strong>Services:</strong> {', '.join(services)}"
     )
     await send_html(client, room_id, plain, html)
+
+
+# ---------------------------------------------------------------------------
+# Wordle
+# ---------------------------------------------------------------------------
+from wordle import handle_wordle
+
+
+@command("wordle", "Play Wordle! (!wordle help for details)")
+async def cmd_wordle(client: AsyncClient, room_id: str, sender: str, args: str):
+    await handle_wordle(client, room_id, sender, args)