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>

docker-compose.dev.yml

@@ -0,0 +1,28 @@
+# Development-specific overrides
+# Use with: docker-compose -f docker-compose.yml -f docker-compose.dev.yml up
+
+services:
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    volumes:
+      # Mount source code for hot-reload
+      - ./backend:/app
+      # Don't override the venv
+      - /app/venv
+    environment:
+      - DEBUG=true
+    command: uvicorn main:app --host 0.0.0.0 --port 8000 --reload
+
+  consent-service:
+    # For development, you might want to use the local binary instead
+    # Uncomment below to mount source and rebuild on changes
+    # volumes:
+    #   - ./consent-service:/app
+    environment:
+      - GIN_MODE=debug
+
+  postgres:
+    ports:
+      - "5432:5432"  # Expose for local tools