Fix Degewo auto-apply (Wohnungshelden iframe), update dependencies, cleanup for production

- Fix Degewo handler to work with Wohnungshelden iframe portal
- Update playwright to >=1.57.0
- Add proper form field selectors for Wohnungshelden
- Fix success status bug (was marking failed submissions as success)
- Clean up .env.example (remove real credentials)
- Update README with housing company support table
- Add BOTFATHER_COMMANDS.txt for easy bot setup
- Add copilot-instructions.md for development context

docker-compose.yml

@@ -3,23 +3,7 @@ services:
     build: .
     container_name: inberlin-monitor
     restart: unless-stopped
-    environment:
-      # Telegram notifications
-      - TELEGRAM_BOT_TOKEN=${TELEGRAM_BOT_TOKEN}
-      - TELEGRAM_CHAT_ID=${TELEGRAM_CHAT_ID}
-      # inberlinwohnen.de login
-      - INBERLIN_EMAIL=${INBERLIN_EMAIL}
-      - INBERLIN_PASSWORD=${INBERLIN_PASSWORD}
-      # Check interval in seconds (default: 300 = 5 minutes)
-      - CHECK_INTERVAL=${CHECK_INTERVAL:-300}
-      # Form data for applications
-      - FORM_ANREDE=${FORM_ANREDE:-Herr}
-      - FORM_VORNAME=${FORM_VORNAME:-Aron}
-      - FORM_NACHNAME=${FORM_NACHNAME:-Petau}
-      - FORM_EMAIL=${FORM_EMAIL:-aron@petau.net}
-      - FORM_PHONE=${FORM_PHONE:-017695773688}
-      - FORM_PERSONS=${FORM_PERSONS:-1}
-      - FORM_CHILDREN=${FORM_CHILDREN:-0}
-      - FORM_INCOME=${FORM_INCOME:-1600}
+    env_file:
+      - .env
     volumes:
       - ./data:/data