fix: gap report reads the launcher layer

cross_reference --platform listed core files the platform's launcher already settles, as Batocera's DuckStation scph1002a.bin while the PAL slot holds scph5502.bin. It now hands the launcher layer the same entries verify does, and counts what it settles as set aside.

scripts/verify.py

@@ -84,7 +84,7 @@ from common import (
 
 yaml = require_yaml()
 from exporter.candidates import BIOS, EntryCategories
-from launchers import LauncherLayer, declared_destinations
+from launchers import LauncherLayer, declared_destinations, held_record
 from nativemode import (
     SIZE_AND_ANY_HASH,
     digest_algorithm,
@@ -489,17 +489,6 @@ def _identity_of(entry: dict) -> dict:
     }
 
 
-def _held_record(report: dict, db: dict) -> dict | None:
-    """The database record of the file the collection holds for a report entry."""
-    local, status = resolve_local_file(report, db, dest_hint=report.get("path") or "")
-    if local is None or status in ("not_found", "hash_mismatch"):
-        return None
-    for record in db.get("files", {}).values():
-        if record.get("path") == local:
-            return record
-    return None
-
-
 def find_undeclared_files(
     config: dict,
     emulators_dir: str,
@@ -778,7 +767,7 @@ def find_undeclared_files(
 
     if launcher_layer:
         added, settled = launcher_layer.settle(
-            launcher_candidates, lambda report: _held_record(report, db)
+            launcher_candidates, lambda report: held_record(report, db)
         )
         undeclared = [u for u in undeclared if id(u) not in settled]
         undeclared.extend(added)