fix: another tree's casing does not hold a file

dosbox-x's et4000.bin matched only pcem's et4000.BIN. resolve_local_file, asked as dosbox-x, refuses another emulator's tree in its case-insensitive step, so the pack and installer leave it out, while the gap report and verify's core files resolved without the asker and counted it held. Both now resolve as the profile, and the manifests of Batocera and KNULLI no longer flag it held.

scripts/cross_reference.py

@@ -26,7 +26,9 @@ sys.path.insert(0, os.path.dirname(__file__))
 from common import (
     platform_arg,
     ProfileSelectionError,
+    _foreign_tree,
     _norm_system_id,
+    _owner_tokens,
     archive_entry,
     directory_members,
     expand_directory_entries,
@@ -215,8 +217,14 @@ def _resolve_source(
     none of the hashes the entry declares: a name never wins over a declared
     hash, and zquestclassic's ending.mid read as held because Hydra Castle
     Labyrinth has another file of that name.
+
+    Another casing of the name in another emulator's tree proves nothing, as
+    in resolve_local_file's case-insensitive step: dosbox-x's et4000.bin read
+    as held through pcem's et4000.BIN, which the pack and the installer
+    refuse it.
     """
     declared = _declared_content(file_entry or {})
+    owners = _owner_tokens(file_entry or {})
 
     def _can_be(sha1s: list | str) -> bool:
         if not file_entry or db_files is None:
@@ -233,6 +241,14 @@ def _resolve_source(
         """Whether the files indexed under *name* can be this entry."""
         return _can_be(by_name.get(name) or [])
 
+    def _folded_hit(name: str) -> bool:
+        """_name_hit for a name matched in another casing."""
+        return _can_be([
+            sha1 for sha1 in by_name.get(name) or []
+            if db_files is None
+            or not _foreign_tree(db_files.get(sha1, {}).get("path", ""), owners)
+        ])
+
     # bios/ via database.json by_name
     if fname in by_name and _name_hit(fname):
         return "bios"
@@ -241,10 +257,10 @@ def _resolve_source(
     if basename and basename in by_name and _name_hit(basename):
         return "bios"
     key = fname.lower()
-    if key in by_name_lower and _name_hit(by_name_lower[key]):
+    if key in by_name_lower and _folded_hit(by_name_lower[key]):
         return "bios"
     if basename:
-        if basename.lower() in by_name_lower and _name_hit(
+        if basename.lower() in by_name_lower and _folded_hit(
             by_name_lower[basename.lower()]
         ):
             return "bios"
@@ -257,7 +273,7 @@ def _resolve_source(
     if canonical and canonical != fname:
         if canonical in by_name and _name_hit(canonical):
             return "bios"
-        if canonical.lower() in by_name_lower and _name_hit(
+        if canonical.lower() in by_name_lower and _folded_hit(
             by_name_lower[canonical.lower()]
         ):
             return "bios"
@@ -901,7 +917,9 @@ def _cross_reference_profile(
         source = next(
             (
                 found for version in versions[slot]
-                if (found := entry_source(version, index)) is not None
+                if (found := entry_source(
+                    {**version, "source_profile": emu_name}, index,
+                )) is not None
             ),
             "missing",
         )