Add CLAUDE.md with deployment workflow guidelines

CLAUDE.md

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+# Runtipi Development Guidelines
+
+## Deployment Workflow
+
+**IMPORTANT:** Always follow this workflow when deploying changes to runtipi apps:
+
+1. Push changes to the repo:
+   ```bash
+   cd /etc/runtipi/repos/runtipi
+   git add . && git commit -m "message" && git push
+   ```
+
+2. Update the appstore to pull latest changes:
+   ```bash
+   sudo runtipi-cli appstore update
+   ```
+
+3. Stop the app:
+   ```bash
+   sudo runtipi-cli app stop <APP_NAME>:runtipi
+   ```
+
+4. Start the app:
+   ```bash
+   sudo runtipi-cli app start <APP_NAME>:runtipi
+   ```
+
+**NEVER** use `docker compose up/down` or `docker run` directly for runtipi apps unless debugging.
+
+## App Naming Convention
+
+Apps require the `:runtipi` namespace suffix when using runtipi-cli commands:
+- `rego-tunnel-linux:runtipi`
+- `cistech-tunnel:runtipi`
+
+## Directory Structure
+
+- `/etc/runtipi/repos/runtipi/apps/` - App definitions (config.json, docker-compose.yml, docker-compose.json, source/)
+- `/etc/runtipi/app-data/` - Runtime app data (managed by runtipi)
+- `/etc/runtipi/user-config/` - User configuration overrides