feat(migration): implement interactive mapping resolution workflow

- Add SQLite database integration for environments and mappings
- Update TaskManager to support pausing tasks (AWAITING_MAPPING)
- Modify MigrationPlugin to detect missing mappings and wait for resolution
- Add frontend UI for handling missing mappings interactively
- Create dedicated migration routes and API endpoints
- Update .gitignore and project documentation

backend/src/api/routes/tasks.py

@@ -16,6 +16,9 @@ class CreateTaskRequest(BaseModel):
     plugin_id: str
     params: Dict[str, Any]
 
+class ResolveTaskRequest(BaseModel):
+    resolution_params: Dict[str, Any]
+
 @router.post("/", response_model=Task, status_code=status.HTTP_201_CREATED)
 async def create_task(
     request: CreateTaskRequest,
@@ -54,4 +57,19 @@ async def get_task(
     if not task:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Task not found")
     return task
+
+@router.post("/{task_id}/resolve", response_model=Task)
+async def resolve_task(
+    task_id: str,
+    request: ResolveTaskRequest,
+    task_manager: TaskManager = Depends(get_task_manager)
+):
+    """
+    Resolve a task that is awaiting mapping.
+    """
+    try:
+        await task_manager.resolve_task(task_id, request.resolution_params)
+        return task_manager.get_task(task_id)
+    except ValueError as e:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
 # [/DEF]