feat: BreakPilot PWA - Full codebase (clean push without large binaries)

All services: admin-v2, studio-v2, website, ai-compliance-sdk,
consent-service, klausur-service, voice-service, and infrastructure.
Large PDFs and compiled binaries excluded via .gitignore.

klausur-service/backend/services/__init__.py

@@ -0,0 +1,80 @@
+# Klausur-Service Services Package
+
+# Grading Services
+from .grading_service import (
+    calculate_grade_points,
+    calculate_raw_points,
+)
+
+# Authentication Services
+from .auth_service import (
+    get_current_user,
+)
+
+# EH Audit Services
+from .eh_service import (
+    log_audit,
+    log_eh_audit,
+)
+
+# OCR Services - Lazy imports (require PIL/cv2 which may not be installed)
+# These are imported on-demand when actually used
+def __getattr__(name):
+    """Lazy import for optional image processing modules."""
+    _handwriting_exports = {
+        'detect_handwriting', 'detect_handwriting_regions',
+        'mask_to_png', 'DetectionResult'
+    }
+    _inpainting_exports = {
+        'inpaint_image', 'inpaint_opencv_telea', 'inpaint_opencv_ns',
+        'remove_handwriting', 'check_lama_available',
+        'InpaintingMethod', 'InpaintingResult'
+    }
+    _layout_exports = {
+        'reconstruct_layout', 'layout_to_fabric_json', 'reconstruct_and_clean',
+        'LayoutResult', 'TextElement', 'ElementType'
+    }
+
+    if name in _handwriting_exports:
+        from . import handwriting_detection
+        return getattr(handwriting_detection, name)
+    elif name in _inpainting_exports:
+        from . import inpainting_service
+        return getattr(inpainting_service, name)
+    elif name in _layout_exports:
+        from . import layout_reconstruction_service
+        return getattr(layout_reconstruction_service, name)
+
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+
+__all__ = [
+    # Grading
+    'calculate_grade_points',
+    'calculate_raw_points',
+    # Authentication
+    'get_current_user',
+    # Audit
+    'log_audit',
+    'log_eh_audit',
+    # Handwriting Detection (lazy)
+    'detect_handwriting',
+    'detect_handwriting_regions',
+    'mask_to_png',
+    'DetectionResult',
+    # Inpainting (lazy)
+    'inpaint_image',
+    'inpaint_opencv_telea',
+    'inpaint_opencv_ns',
+    'remove_handwriting',
+    'check_lama_available',
+    'InpaintingMethod',
+    'InpaintingResult',
+    # Layout Reconstruction (lazy)
+    'reconstruct_layout',
+    'layout_to_fabric_json',
+    'reconstruct_and_clean',
+    'LayoutResult',
+    'TextElement',
+    'ElementType',
+]