test(discovery/crawler): capture golden fixtures from five sources

.pre-commit-config.yaml

@@ -10,6 +10,7 @@ repos:
         exclude: ^web/tsconfig\.json$
       - id: check-merge-conflict
       - id: check-added-large-files
+        exclude: ^backend/internal/domain/discovery/crawler/testdata/
       - id: no-commit-to-branch
         args: ['--branch', 'main']
 

backend/internal/domain/discovery/crawler/testdata/README.md

@@ -0,0 +1,16 @@
+# Crawler test fixtures
+
+Captured with curl using the default Firefox UA on 2026-04-18.
+
+These are the exact bytes each source served at capture time. If a parser starts
+failing after a site redesign, re-capture the corresponding file with the curl
+commands documented in `docs/superpowers/plans/2026-04-18-dach-discovery-crawler.md`
+(Task 2) and update the parser's expected assertions.
+
+- `marktkalendarium.html` — https://www.marktkalendarium.de/maerkte2026.php
+- `mittelalterkalender.html` — https://www.mittelalterkalender.info/mittelaltermarkt/mittelalterfeste-2026-nach-datum.php
+- `festival_alarm.html` — https://www.festival-alarm.com/Kategorien/Mittelalter-Festivals/(year)/2026
+- `mittelaltermarkt_online_page1.json` — Tribe REST API page 1
+- `mittelaltermarkt_online_page2.json` — Tribe REST API page 2
+- `suendenfrei_page1.html` — https://www.suendenfrei.tv/veranstaltungen
+- `suendenfrei_page2.html` — https://www.suendenfrei.tv/veranstaltungen/page-2