Initial commit: Aoi (Аой-тян) — Matrix notifier for Navidrome and discovery-playlist

- aoi.py: poller for Navidrome (main + anime libraries), discovery playlists, release watch for liked/rated artists
- Last.fm enrichment (bio, tags); Bandcamp search links
- config.example.json: safe template; config.json gitignored
- deploy/aoi.service: systemd unit (production)
- assets/banner.png + aoi-avatar.png: persona banner + bot avatar
- Russian README in line with sibling bots (rada/watcher)

config.example.json

@@ -0,0 +1,42 @@
+{
+  "matrix": {
+    "homeserver": "https://tuwu.vespahomelab.ru",
+    "access_token": "REPLACE_ME",
+    "room_id": "!roomid:tuwu.vespahomelab.ru",
+    "user_id": "@aoi:tuwu.vespahomelab.ru"
+  },
+  "bot": {
+    "name": "Аой-тян",
+    "avatar_path": ""
+  },
+  "navidrome": {
+    "url": "http://192.168.31.216:4533",
+    "username": "shu",
+    "password": "REPLACE_ME",
+    "main_library_id": 1,
+    "anime_library_id": 3,
+    "discovery_library_id": 4,
+    "album_poll_size": 40
+  },
+  "discovery": {
+    "db_path": "/data/discovery.db",
+    "playlist_name_contains": "Discovery"
+  },
+  "metadata": {
+    "lastfm_api_key": "",
+    "musicbrainz_enabled": true,
+    "proxy": "",
+    "user_agent": "AoiNotifier/1.0 (https://tuwu.vespahomelab.ru)"
+  },
+  "polling": {
+    "navidrome_album_interval_seconds": 300,
+    "discovery_playlist_interval_seconds": 180,
+    "release_watch_interval_seconds": 600,
+    "baseline_existing_on_first_run": true
+  },
+  "server": {
+    "host": "0.0.0.0",
+    "port": 18323
+  }
+}
+