fix(transit): real route-id modes for Prague, Bordeaux and Rouen; dated Warsaw/Poznań credits; data.gov.my refresh

- Prague PID: map route-id ranges from PID's GTFS (metro L991-993, S/R trains
  L1000s/L1100s, P ferries L1800s, trolleybuses 50-59, X lines, funicular LD)
  instead of 'below 100 is a tram, rest bus'.
- Bordeaux TBM: trams ride numbered ids 59-62/163/164 (A-F), boats 951-953;
  the old letter match never fired.
- Rouen Astuce: TCAR:90 Metro as tram, TCAR:99 Calypso as ferry; Le Havre FUNI.
- Warsaw and Poznan: credit carries the data date (and Warsaw links its API),
  as their terms require.
- data.gov.my feeds: CC BY 4.0, refreshMs 30 s to stay under 4 requests/min;
  proxy honours per-feed refreshMs.
- Denver: quote the RTD agreement; tests use the feeds' real route ids.

src/data/dataCredits.test.mjs

@@ -1,6 +1,11 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
-import { DATA_CREDITS, NYC_DOT_DISCLAIMER } from './dataCredits.js';
+import {
+  DATA_CREDITS,
+  NYC_DOT_DISCLAIMER,
+  transitFeedCredit,
+} from './dataCredits.js';
+import { getTransitFeed } from './transitFeeds.js';
 
 test('every credit carries a unique key and some markup to render', () => {
   const keys = DATA_CREDITS.map((entry) => entry.key);
@@ -167,3 +172,24 @@ test('the PR #1506 camera packs are credited with their sources and terms', () =
     /href="https:\/\/www\.river\.go\.jp\//,
   );
 });
+
+test('Warsaw and Poznań credits carry the data date their licences ask for', () => {
+  const warsaw = getTransitFeed('ztm-warszawa');
+  // 2026-11-09T06:00:00Z as a GTFS-RT header timestamp (seconds).
+  const credit = transitFeedCredit(warsaw, { feedTimestamp: 1_794_204_000 });
+  assert.match(credit.html, /, data of 2026-11-09\)/);
+  assert.match(credit.html, /href="http:\/\/api\.um\.warszawa\.pl"/);
+  assert.equal(credit.key, 'transit-ztm-warszawa-2026-11-09');
+  // Without a feed timestamp the fetch time is the download date.
+  const poznan = transitFeedCredit(getTransitFeed('ztm-poznan'), {
+    feedTimestamp: null,
+    fetchedAt: Date.UTC(2026, 10, 10, 12),
+  });
+  assert.match(poznan.html, /data of 2026-11-10/);
+  // Undated feeds keep one credit line for the session.
+  const mbta = transitFeedCredit(getTransitFeed('mbta'), {
+    feedTimestamp: 1_794_204_000,
+  });
+  assert.equal(mbta.key, 'transit-mbta');
+  assert.doesNotMatch(mbta.html, /data of/);
+});