Simple web backend added with upload/status/process/download API

web/backend/api/status.py

@@ -0,0 +1,25 @@
+"""Status query endpoint."""
+
+from fastapi import APIRouter, HTTPException
+
+from backend.models.response import StatusResponse
+from backend.services.task_manager import task_manager
+
+router = APIRouter(prefix="/api", tags=["status"])
+
+
+@router.get("/status/{task_id}", response_model=StatusResponse)
+async def get_status(task_id: str):
+    if not task_manager.has_task(task_id):
+        raise HTTPException(status_code=404, detail=f"Task {task_id} not found")
+
+    status = task_manager.get_status(task_id)
+
+    return StatusResponse(
+        task_id=task_id,
+        status=status["status"],
+        progress=status["progress"],
+        message=status["message"],
+        error=status.get("error"),
+        tracks=status.get("tracks", [])
+    )