Source Copenhagen transit data from Rejseplanen GTFS

- Replace OSM Overpass transit data with the Rejseplanen GTFS feed
  (routes keyed by (agency, short name); styles from modes.yaml)
- Draw one shape per (style, ref, direction), choosing the shape that
  serves the most in-area stops so lines pass the stops we show
- Collapse stops by names (verified unambiguous); prune stops whose
  serving refs have no drawn line within 300 m
- Patch Københavns Havn + Nordhavn into the area polygon so ferry
  routes and sub-harbour metro tunnels survive clipping; 100 m buffer
  closes relation boundary slivers
- Drop OSM download pipeline; keep tiled basemap

copenhagen/scripts/download_gtfs.py

@@ -1,40 +1,27 @@
 #!/usr/bin/env python3
-"""Download the Rejseplanen GTFS feed for the Copenhagen area.
+"""Download the Rejseplanen GTFS feed (all of Denmark) and unzip into data/raw/gtfs/.
 
-STATUS: BLOCKED. Rejseplanen (journey planner) does not currently expose a
-public GTFS download. This script documents the intended flow and exits
-non-zero with guidance.
-
-When a feed URL becomes available, set it here and the script will download
-and unzip into data/raw/gtfs/.
+Source: https://www.rejseplanen.info/labs — a static GTFS zip published by
+Rejseplanen covering DSB, DSB S-tog, Metroselskabet, Movia, Lokaltog,
+Hovedstadens Letbane, Skånetrafiken, etc. Nationwide feed; gtfs_to_geopackage.py
+filters it down to the Copenhagen area.
 """
-import sys
 import urllib.request
 import zipfile
-from pathlib import Path
 
-from _common import GTFS_RAW
+from _common import GTFS_RAW, UA
 
-# Fill in once access is granted. Likely candidates:
-#   - Rejseplanen / DOT open-data portal
-#   - a static GTFS zip provided on request
-GTFS_URL = None  # e.g. "https://.../rejseplanen.zip"
+GTFS_URL = "https://www.rejseplanen.info/labs/GTFS.zip"
 
 
 def main():
-    if not GTFS_URL:
-        print(
-            "download_gtfs: BLOCKED — no GTFS feed URL configured.\n"
-            "Set GTFS_URL in this script once Rejseplanen grants access, then re-run.\n"
-            "The OSM-only pipeline (build_area -> download_osm -> prepare -> render)\n"
-            "is fully functional without GTFS; GTFS only enriches colours/stops.",
-            file=sys.stderr,
-        )
-        sys.exit(2)
     GTFS_RAW.mkdir(parents=True, exist_ok=True)
     zip_path = GTFS_RAW / "feed.zip"
     print(f"downloading {GTFS_URL} -> {zip_path} ...", flush=True)
-    urllib.request.urlretrieve(GTFS_URL, zip_path)
+    req = urllib.request.Request(GTFS_URL, headers={"User-Agent": UA})
+    with urllib.request.urlopen(req) as r, zip_path.open("wb") as f:
+        while chunk := r.read(1 << 20):
+            f.write(chunk)
     with zipfile.ZipFile(zip_path) as z:
         z.extractall(GTFS_RAW)
     zip_path.unlink(missing_ok=True)