Fix update_existing_motions: single write connection and module-level duckdb import

Use one DuckDB write connection for the entire update loop instead of
opening/closing per row, wrapped in try/finally for proper cleanup.
Move 'import duckdb' to module level with other imports.

scripts/download_past_year.py

@@ -18,6 +18,8 @@ from datetime import datetime, timedelta
 from typing import Optional, Tuple
 from urllib.parse import urlparse
 
+import duckdb
+
 sys.path.insert(0, ".")  # run from project root
 
 from api_client import TweedeKamerAPI
@@ -71,8 +73,6 @@ def update_existing_motions(
     Returns:
         (updated_count, skipped_count) tuple.
     """
-    import duckdb
-
     # Read motions with missing body_text
     conn_read = duckdb.connect(db_path, read_only=True)
     rows = conn_read.execute(
@@ -89,16 +89,22 @@ def update_existing_motions(
     updated = 0
     skipped = 0
 
+    conn_write = duckdb.connect(db_path, read_only=False)
+    try:
         for row in rows:
             motion_id, url, title, description = row
 
             besluit_id = extract_besluit_id(url or "")
             if not besluit_id:
-            print(f"  Skipping motion {motion_id}: cannot extract besluit_id from URL")
+                print(
+                    f"  Skipping motion {motion_id}: cannot extract besluit_id from URL"
+                )
                 skipped += 1
                 continue
 
-        print(f"  Fetching details for motion {motion_id} (besluit_id={besluit_id})...")
+            print(
+                f"  Fetching details for motion {motion_id} (besluit_id={besluit_id})..."
+            )
             details = api._get_motion_details(besluit_id)
 
             if not details or not details.get("body_text"):
@@ -123,7 +129,6 @@ def update_existing_motions(
             ):
                 new_desc = details.get("description") or description
 
-        conn_write = duckdb.connect(db_path, read_only=False)
             conn_write.execute(
                 """
                 UPDATE motions
@@ -132,13 +137,14 @@ def update_existing_motions(
                 """,
                 (new_body, new_title, new_desc, motion_id),
             )
-        conn_write.close()
 
             updated += 1
             print(f"  Updated motion {motion_id}")
 
             if delay > 0 and updated + skipped < len(rows):
                 time.sleep(delay)
+    finally:
+        conn_write.close()
 
     return updated, skipped