Fix environment variable handling for production deployment

- Update settings.py to support both ALLOWED_HOSTS and DJANGO_ALLOWED_HOSTS
- Add production CSRF_TRUSTED_ORIGINS for vhtv-stiftung.de
- Update env-template.txt with production variable examples
- Improve compatibility between development and production environments

.taskmaster/config.json

@@ -0,0 +1,34 @@
+{
+  "models": {
+    "main": {
+      "provider": "anthropic",
+      "modelId": "claude-3-7-sonnet-20250219",
+      "maxTokens": 120000,
+      "temperature": 0.2
+    },
+    "research": {
+      "provider": "perplexity",
+      "modelId": "sonar-pro",
+      "maxTokens": 8700,
+      "temperature": 0.1
+    },
+    "fallback": {
+      "provider": "anthropic",
+      "modelId": "claude-3-7-sonnet-20250219",
+      "maxTokens": 120000,
+      "temperature": 0.2
+    }
+  },
+  "global": {
+    "logLevel": "info",
+    "debug": false,
+    "defaultSubtasks": 5,
+    "defaultPriority": "medium",
+    "projectName": "Taskmaster",
+    "defaultTag": "master",
+    "ollamaBaseURL": "http://localhost:11434/api",
+    "azureOpenaiBaseURL": "https://your-endpoint.openai.azure.com/",
+    "bedrockBaseURL": "https://bedrock.us-east-1.amazonaws.com",
+    "responseLanguage": "English"
+  }
+}