init: telegram bot bridging messages to claude sessions

Async Rust bot (teloxide + tokio) that:
- Authenticates users per chat with a passphrase (resets daily at 5am)
- Generates deterministic UUID v5 session IDs from chat_id + date
- Pipes messages to `claude -p --session-id/--resume <uuid>`
- Persists auth and session state to disk across restarts
- Deploys as systemd --user service via `make deploy`

README.md

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+# NOC
+
+Telegram bot that bridges messages to `claude` sessions.
+
+## How it works
+
+1. User sends a message to the bot
+2. First message must be the auth passphrase, otherwise the bot replies "not authenticated"
+3. Once authenticated, messages are piped to `ms --resume <session_id>` via stdin
+4. `claude` stdout is sent back as the reply
+5. Sessions are scoped per chat and refresh daily at 5am local time
+
+## Setup
+
+```bash
+cp config.example.yaml config.yaml
+# edit config.yaml with your values
+```
+
+## Config
+
+| Key | Description |
+|-----|-------------|
+| `tg.key` | Telegram bot token |
+| `auth.passphrase` | Passphrase required to authenticate each session |
+| `session.refresh_hour` | Hour (local time, 24h) when sessions reset |
+
+## Deploy
+
+```bash
+make deploy
+```
+
+This builds the release binary and installs a `systemd --user` service.
+
+## Logs
+
+```bash
+journalctl --user -u noc -f
+```