feat: add chat group daily summarizer

- Telegram collector (Telethon MTProto) with checkpoint-based message fetching
- Claude API summarization via proxy (haiku model)
- Dashboard page with date picker, markdown summary, raw message drill-down
- Separate container lifecycle from dashboard for stable Telethon sessions
- Shared SQLite DB mounted read-only into dashboard

chat-summarizer/docker-compose.yml

@@ -0,0 +1,20 @@
+services:
+  chat-summarizer:
+    build: .
+    container_name: chat-summarizer
+    restart: unless-stopped
+    volumes:
+      - /volume1/docker/chat-summarizer/data:/app/data
+    environment:
+      - TG_API_ID=${TG_API_ID}
+      - TG_API_HASH=${TG_API_HASH}
+      - TG_SESSION_NAME=${TG_SESSION_NAME:-chat_summarizer}
+      - TG_GROUP_IDS=${TG_GROUP_IDS}
+      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+      - ANTHROPIC_BASE_URL=${ANTHROPIC_BASE_URL:-https://www.bytecatcode.org}
+      - SUMMARY_HOUR=${SUMMARY_HOUR:-23}
+    logging:
+      driver: json-file
+      options:
+        max-size: "10m"
+        max-file: "3"