diff --git a/_check_rebuild.py b/_check_rebuild.py
deleted file mode 100644
index 5ff13a5a..00000000
--- a/_check_rebuild.py
+++ /dev/null
@@ -1,50 +0,0 @@
-from pathlib import Path
-import json
-
-vault = Path(r"D:\L\OB\Literature-hub")
-structured_path = vault / "System" / "PaperForge" / "ocr" / "SAN9AYVR" / "blocks.structured.jsonl"
-profiles_path = vault / "System" / "PaperForge" / "ocr" / "SAN9AYVR" / "role_span_profiles.json"
-
-if structured_path.exists():
-    print(f"structured blocks: {structured_path.stat().st_size} bytes")
-    with open(structured_path, encoding="utf-8") as f:
-        line = f.readline()
-        row = json.loads(line)
-        has_span = "span_metadata" in row
-        has_role = row.get("role")
-        has_conf = row.get("role_confidence")
-        print(f"  first block role={has_role}, conf={has_conf}, has_span_metadata={has_span}")
-
-    total = 0
-    with_span = 0
-    with open(structured_path, encoding="utf-8") as f:
-        for line in f:
-            total += 1
-            row = json.loads(line)
-            if row.get("span_metadata"):
-                with_span += 1
-    print(f"  total blocks: {total}, with span_metadata: {with_span} ({100*with_span/total:.1f}%)")
-else:
-    print("structured blocks not found")
-
-if profiles_path.exists():
-    profiles = json.loads(profiles_path.read_text(encoding="utf-8"))
-    print(f"\nrole_span_profiles.json: {len(profiles)} roles")
-    for role, p in sorted(profiles.items()):
-        print(f"  {role}: count={p['block_count']}, size={p['mean_size']}, quality={p['quality']}")
-else:
-    print("role_span_profiles.json not found")
-
-second_pass_total = 0
-span_alt_total = 0
-with open(structured_path, encoding="utf-8") as f:
-    for line in f:
-        row = json.loads(line)
-        ev = row.get("evidence", [])
-        for e in ev:
-            if "second_pass" in e:
-                second_pass_total += 1
-            if "span_alternatives" in e:
-                span_alt_total += 1
-print(f"\nSecond-pass applied: {second_pass_total} blocks")
-print(f"Span alternatives flagged: {span_alt_total} blocks")