feat: merge cartsnitch/api into api/ subdirectory

Consolidate API gateway service into monorepo.
Squashed from https://github.com/cartsnitch/api main (89bacb1).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/cartsnitch_api/routes/scraping.py

@@ -0,0 +1,42 @@
+"""Scraping routes: trigger sync, check status (proxy to ReceiptWitness)."""
+
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from httpx import HTTPStatusError, RequestError
+
+from cartsnitch_api.auth.dependencies import get_current_user
+from cartsnitch_api.schemas import SyncStatusResponse, SyncTriggerResponse
+from cartsnitch_api.services.receiptwitness import ReceiptWitnessClient
+
+router = APIRouter(prefix="/scraping", tags=["scraping"])
+
+
+@router.post("/{store_slug}/sync", response_model=SyncTriggerResponse)
+async def trigger_sync(store_slug: str, user_id: UUID = Depends(get_current_user)):
+    client = ReceiptWitnessClient()
+    try:
+        result = await client.trigger_sync(str(user_id), store_slug)
+        return result
+    except HTTPStatusError as e:
+        raise HTTPException(
+            status_code=e.response.status_code,
+            detail="Sync service error",
+        ) from e
+    except RequestError:
+        raise HTTPException(
+            status_code=status.HTTP_502_BAD_GATEWAY,
+            detail="Unable to reach sync service",
+        ) from None
+
+
+@router.get("/status", response_model=list[SyncStatusResponse])
+async def sync_status(user_id: UUID = Depends(get_current_user)):
+    client = ReceiptWitnessClient()
+    try:
+        return await client.get_sync_status(str(user_id))
+    except (HTTPStatusError, RequestError):
+        raise HTTPException(
+            status_code=status.HTTP_502_BAD_GATEWAY,
+            detail="Unable to reach sync service",
+        ) from None