Enhance MCP development features and introduce skills management

- Added configuration options for requiring human approval before applying LLM-generated MCP patches.
- Updated Docker setup to include skills directory.
- Integrated skills management into the backend, allowing for procedural guides and skill matching.
- Refactored database initialization to apply Alembic migrations.
- Enhanced task approval process to handle MCP patch applications with optional approval.
- Introduced new schemas for skills and updated existing APIs to support skills functionality.

This commit lays the groundwork for improved agent capabilities and better management of MCP development processes.

backend/app/services/device_defaults.py

@@ -29,8 +29,10 @@ from __future__ import annotations
 
 import os
 from dataclasses import dataclass
+from typing import TYPE_CHECKING
 
-from app.inventory_catalog import CatalogEntry
+if TYPE_CHECKING:
+    from app.inventory_catalog import CatalogEntry
 
 # catalog_key → how secrets are stored / resolved
 SLOT_AUTH: dict[str, dict] = {