refactor: flatten monorepo structure to backend/ frontend/ devops/

Rename subdirectories for a cleaner single-repo layout:
- website-monitoring-backend/  → backend/
- website-monitoring-frontend/ → frontend/
- website-monitoring-devops/   → devops/

Update all references in package.json scripts, CI workflows,
docker-compose, pre-commit hooks, and documentation.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

frontend/.taskmaster/config.json

@@ -0,0 +1,37 @@
+{
+  "models": {
+    "main": {
+      "provider": "ollama",
+      "modelId": "devstral:latest",
+      "maxTokens": 128000,
+      "temperature": 0.2
+    },
+    "research": {
+      "provider": "ollama",
+      "modelId": "devstral:latest",
+      "maxTokens": 128000,
+      "temperature": 0.1
+    },
+    "fallback": {
+      "provider": "ollama",
+      "modelId": "devstral:latest",
+      "maxTokens": 128000,
+      "temperature": 0.2
+    }
+  },
+  "global": {
+    "logLevel": "info",
+    "debug": false,
+    "defaultNumTasks": 10,
+    "defaultSubtasks": 5,
+    "defaultPriority": "medium",
+    "projectName": "Taskmaster",
+    "ollamaBaseURL": "http://localhost:11434/api",
+    "bedrockBaseURL": "https://bedrock.us-east-1.amazonaws.com",
+    "responseLanguage": "English",
+    "defaultTag": "master",
+    "azureOpenaiBaseURL": "https://your-endpoint.openai.azure.com/",
+    "userId": "1234567890"
+  },
+  "claudeCode": {}
+}