corpus_integrity.py: write unreadable files to ingest_failures for UI visibility

scripts/corpus_integrity.py

@@ -195,6 +195,21 @@ def run_reconciliation(fix=False):
                     print(f"  Queued: {finfo['source']}")
             else:
                 print(f"  Skipped (unreadable): {finfo['source']}")
+                try:
+                    pg = get_pg()
+                    cur = pg.cursor()
+                    cur.execute("""
+                        INSERT INTO ingest_failures (source, filepath, error, retry_count, first_failed_at, last_failed_at)
+                        VALUES (%s, %s, %s, 2, NOW(), NOW())
+                        ON CONFLICT (source) DO UPDATE SET
+                            error = EXCLUDED.error,
+                            last_failed_at = NOW()
+                    """, (finfo["source"], finfo["filepath"],
+                          "Empty text — likely scanned, encrypted, or corrupt. Requires manual review or OCR."))
+                    pg.commit()
+                    pg.close()
+                except Exception as e:
+                    print(f"  WARNING: could not record failure: {e}")
         print()
 
     report = {