feat: Auto-create Work entries during document ingestion

Adds automatic Work object creation to ensure all uploaded documents
appear on the /documents page. Previously, chunks were ingested but
Work entries were missing, causing documents to be invisible in the UI.

Changes:
- Add create_or_get_work() function to weaviate_ingest.py
  - Checks for existing Work by sourceId (prevents duplicates)
  - Creates new Work with metadata (title, author, year, pages)
  - Returns UUID for potential future reference
- Integrate Work creation into ingest_document() flow
- Add helper scripts for retroactive fixes and verification:
  - create_missing_works.py: Create Works for already-ingested documents
  - reingest_batch_documents.py: Re-ingest documents after bug fixes
  - check_batch_results.py: Verify batch upload results in Weaviate

This completes the batch upload feature - documents now properly appear
on /documents page immediately after ingestion.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

create_missing_works.py

@@ -0,0 +1,58 @@
+"""Create missing Work entries for test documents."""
+
+import json
+import sys
+from pathlib import Path
+
+# Fix Windows encoding
+if sys.platform == "win32":
+    import io
+    sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')
+
+# Add parent directory to path
+sys.path.insert(0, str(Path(__file__).parent / "generations" / "library_rag"))
+
+from utils.weaviate_ingest import create_or_get_work, get_weaviate_client
+
+# Documents to create Works for
+documents = [
+    "A_Cartesian_critique_of_the_artificial_i",
+    "Alan_Turing_and_John_von_Neumann_Their_B"
+]
+
+output_dir = Path(__file__).parent / "generations" / "library_rag" / "output"
+
+print("Creating missing Work entries...\n")
+
+with get_weaviate_client() as client:
+    if client is None:
+        print("Error: Could not connect to Weaviate")
+        sys.exit(1)
+
+    for doc_name in documents:
+        print(f"Processing: {doc_name}")
+
+        # Load metadata from chunks JSON
+        chunks_file = output_dir / doc_name / f"{doc_name}_chunks.json"
+        if not chunks_file.exists():
+            print(f"  ✗ Chunks file not found")
+            continue
+
+        with open(chunks_file, 'r', encoding='utf-8') as f:
+            data = json.load(f)
+
+        metadata = data.get("metadata", {})
+        pages = data.get("pages", 0)
+
+        # Create or get Work
+        work_uuid = create_or_get_work(client, doc_name, metadata, pages)
+
+        if work_uuid:
+            print(f"  ✓ Work created/retrieved: {work_uuid[:8]}...")
+        else:
+            print(f"  ✗ Failed to create Work")
+
+        print()
+
+print("=" * 70)
+print("Done! Checking /documents page now should show the new works.")