feat(monitoring): add Redis exporter + Sentry docs to deployment guide

- Add redis-exporter container to docker-compose (oliver006/redis_exporter, 32MB)
- Add Redis scrape target to Prometheus config
- Add 4 Redis alert rules: RedisDown, HighMemory, HighConnections, RejectedConnections
- Document Step 19b (Sentry Error Tracking) in Hetzner deployment guide
- Document Step 19c (Redis Monitoring) in Hetzner deployment guide
- Update resource budget and port reference tables

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

docs/development/pycharm-configuration-make.md

@@ -45,7 +45,7 @@ C:\ProgramData\chocolatey\bin\make.exe %*
 1. Open PyCharm Settings: **File → Settings** (Ctrl+Alt+S)
 2. Navigate to: **Build, Execution, Deployment → Build Tools → Make**
 3. Set the **Path to make executable** to: `[YOUR_PROJECT_PATH]\make-venv.bat`
-   
+
    For example: `E:\Letzshop-Import-v1\make-venv.bat`
 
 4. Click **Apply** and **OK**
@@ -112,4 +112,4 @@ your-project/
 ├── Makefile
 ├── make-venv.bat
 └── requirements.txt
-```
+```