fix: Restore all files lost during destructive rebase

A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.

This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).

Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/frontend/modules/alerts.py

@@ -0,0 +1,60 @@
+"""
+BreakPilot Studio - Alerts Agent Modul
+
+Dieses Modul bietet:
+- Google Alerts Monitoring Inbox
+- Topic Management (RSS Feeds, Email Parsing)
+- Rule Builder (regelbasierte Filterung)
+- Relevance Profile Editor
+- Alert Actions (Email, Webhook, Slack)
+
+Zielgruppe: Schulverwaltung, Marketing, PR-Teams
+Design-Prinzip: Einheitliche Inbox fuer alle Alerts mit AI-gestuetzter Relevanzpruefung
+
+Die CSS, HTML und JS sind in separate Module ausgelagert:
+- alerts_css.py
+- alerts_html.py
+- alerts_js.py
+"""
+
+from .alerts_css import get_alerts_css
+from .alerts_html import get_alerts_html
+from .alerts_js import get_alerts_js
+
+
+class AlertsModule:
+    """Alerts Agent Modul mit Inbox, Topics und Rules."""
+
+    name = "alerts"
+    display_name = "Alerts Agent"
+    icon = "notification"
+
+    @staticmethod
+    def get_css() -> str:
+        return get_alerts_css()
+
+    @staticmethod
+    def get_html() -> str:
+        return get_alerts_html()
+
+    @staticmethod
+    def get_js() -> str:
+        return get_alerts_js()
+
+    @staticmethod
+    def render() -> dict:
+        """Rendert das komplette Modul."""
+        return {
+            "css": AlertsModule.get_css(),
+            "html": AlertsModule.get_html(),
+            "js": AlertsModule.get_js(),
+        }
+
+
+# Legacy exports für Rückwärtskompatibilität
+__all__ = [
+    "AlertsModule",
+    "get_alerts_css",
+    "get_alerts_html",
+    "get_alerts_js",
+]