feat(pipeline): Block D5+-E complete session — 20k+ new chunks

Session 02-03.05.2026 accomplishments:
- D5+: NIST/ENISA PDF quality fix (0%→45% section rate)
- D5+: 4 lost NIST PDFs restored (11k chunks)
- D5+: Text normalization + section detection for NIST/BSI
- D6: Citation backfill (3,651 controls updated, old archived)
- E2: 8 DE laws ingested (ArbZG, MuSchG, GmbHG, AktG, InsO...)
- E3: 5 EU regulations (CSRD, CSDDD, Taxonomy, eIDAS, Pay Trans.)
- E4: Standards (GoBD, BAIT, VAIT)
- E6: 3 CH + 4 AT laws (OR, DSV, ArG, ArbVG, AngG, AZG, NISG)
- E7: 9 court judgments as full text (Schrems II 154 chunks,
  Meta 101, BVerfG 161, DSK OH 119, Planet49 42, SCHUFA 41,
  Schadenersatz 29, BAG 48, Google Fonts 14)
- Infra: Qdrant snapshot mechanism, upload-before-delete safety

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

control-pipeline/scripts/reupload_legal_strategy.py

@@ -381,7 +381,13 @@ def main():
             continue
 
         # 2. Get text
+        try:
             text = get_text(doc)
+        except Exception as e:
+            print(f"  ERROR extracting text: {e}")
+            results.append({"file": doc["upload_filename"], "old": old_count,
+                            "new": 0, "sect": 0})
+            continue
 
         # 3. Upload with legal strategy
         print("  Uploading with strategy='legal'...")