Restructure: Move ocr_pipeline + labeling + crop into ocr/ package

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

klausur-service/backend/ocr_pipeline_auto.py

@@ -1,23 +1,4 @@
-"""
-OCR Pipeline Auto-Mode Orchestrator and Reprocess Endpoints — Barrel Re-export.
-
-Split into submodules:
-- ocr_pipeline_reprocess.py    — POST /sessions/{id}/reprocess
-- ocr_pipeline_auto_steps.py   — POST /sessions/{id}/run-auto + VLM helper
-
-Lizenz: Apache 2.0
-DATENSCHUTZ: Alle Verarbeitung erfolgt lokal.
-"""
-
-from fastapi import APIRouter
-
-from ocr_pipeline_reprocess import router as _reprocess_router
-from ocr_pipeline_auto_steps import router as _steps_router
-
-# Combine both sub-routers into a single router for backwards compatibility.
-# The consumer imports `from ocr_pipeline_auto import router as _auto_router`.
-router = APIRouter(prefix="/api/v1/ocr-pipeline", tags=["ocr-pipeline"])
-router.include_router(_reprocess_router)
-router.include_router(_steps_router)
-
-__all__ = ["router"]
+# Backward-compat shim -- module moved to ocr/pipeline/auto.py
+import importlib as _importlib
+import sys as _sys
+_sys.modules[__name__] = _importlib.import_module("ocr.pipeline.auto")