feat(three-stage-scan): overlay complexity ledger without hiding sev-5

src/openultrasast/complexity/__init__.py

@@ -1,6 +1,16 @@
 """Heuristic complexity map for stage 2."""
 
 from .hints import TestHint, attach_test_hints
+from .ledger import (
+    LedgerEntry,
+    apply_overlay,
+    hotspot_key,
+    load_ledger,
+    must_keep_as_candidate,
+    record_verdict,
+    select_forced_candidates,
+    write_ledger,
+)
 from .map import ComplexityMap, Hotspot, build_complexity_map, write_complexity_map
 from .signals import ComplexitySignals, collect_signals
 
@@ -8,9 +18,17 @@ __all__ = [
     "ComplexityMap",
     "ComplexitySignals",
     "Hotspot",
+    "LedgerEntry",
     "TestHint",
+    "apply_overlay",
     "attach_test_hints",
     "build_complexity_map",
     "collect_signals",
+    "hotspot_key",
+    "load_ledger",
+    "must_keep_as_candidate",
+    "record_verdict",
+    "select_forced_candidates",
     "write_complexity_map",
+    "write_ledger",
 ]