fix slow position grabbing

src/ptscrapper/scheduler.py

@@ -108,13 +108,6 @@ async def positions_job():
         table = pa.Table.from_pylist(positions)
         # write locally only
         write_positions(table, ts)
-
-        # Schedule immediate fetch for any new course IDs
-        course_ids = {p["c"] for p in positions}
-        for cid in course_ids:
-            if should_fetch_course(cid):
-                await fetch_and_store_course(cid, ts, client)
-        
         logger.info("wrote positions shard for %s", ts)
     except Exception:
         # record error details
@@ -122,6 +115,12 @@ async def positions_job():
     finally:
         await client.aclose()
 
+    # schedule course fetches without awaiting
+    course_ids = {p["c"] for p in positions}
+    for cid in course_ids:
+        if should_fetch_course(cid):
+            asyncio.create_task(fetch_and_store_course(cid, ts))
+
 
 async def fetch_and_store_course(course_id: int, ts: datetime, client=None):
     """Fetch one course’s details and store them."""

src/ptscrapper/storage.py

@@ -190,17 +190,11 @@ def write_course_geometry(polyline_str: str, course_id: int, ts: datetime) -> st
     wkb_arr = ga.as_wkb([wkt])
 
     # 4) Cast into a WkbType with EPSG:4326 built in
-    wkb_with_crs = wkb_arr.cast(
+    wkb_with_crs = wkb_arr.cast(ga.wkb().with_crs("EPSG:4326"))
-        ga.wkb().with_crs("EPSG:4326")
-    )
 
     # 5) Build a 1-row table
     table = pa.Table.from_arrays(
-        [
+        [pa.array([ts]), pa.array([course_id]), wkb_with_crs],
-            pa.array([ts]), 
-            pa.array([course_id]), 
-            wkb_with_crs
-        ],
         names=["fetch_date", "course_id", "geometry"],
     )