fix: M1 exclude_paths '/' jamulix, M2 seed-should_crawl filter, M3 alert dedup

- M1: Removed '/' from jamulix.de exclude_paths (blockaded ALL paths via startswith)
- M2: Seed URLs now pass through should_crawl() in crawler.py
- M3: Alert deduplication via last_alert.json (hash of reasons+level+score)
- Added 11 tests for alert deduplication (277 total, all green)

TASK.md

@@ -101,3 +101,16 @@ M1 + M2 fixen → dann **PASS**.
 - Tests: 266/266 grün ✅
 - M1 + M2: unverändert ✅
 - M3: NEU — Alarm-Mail Deduplizierung fehlt ❌
+
+---
+
+## Zusatzauftrag
+
+2026-06-14T19:02:31.506Z
+
+"Repariere die Beanstandungen."
+
+## Status
+- [ ] Implementierung
+- [ ] Review bestanden (PASS)
+- [ ] Produktionsreif (SHIP)