fix: ares labels name ares's own dumps

ares matches its firmware by sha256 and opens no file by name, so its entry names are labels. Five reused names that other cores give to different dumps (MSX.ROM, MSX2.ROM, bios_CD_E/J/U.bin). On RetroBat that put ares's revision where the platform pins another, slots blamed the platform's declaration, and the pack dropped ares's own dump behind the platform's file. The labels now name the dumps the hashes identify.

emulators/ares.yml

@@ -168,7 +168,7 @@ files:
 
   # --- Mega CD ---
   # Also used by Mega CD 32X (desktop-ui/emulator/mega-cd-32x.cpp)
-  - name: bios_CD_U.bin
+  - name: SegaCDBIOS9303.bin
     system: mega-cd
     region: [north-america]
     required: true
@@ -177,7 +177,7 @@ files:
     description: "Mega CD / Sega CD BIOS (US)"
     source_ref: "desktop-ui/emulator/mega-cd.cpp:17"
 
-  - name: bios_CD_J.bin
+  - name: jp_mcd2_921222.bin
     system: mega-cd
     region: [japan]
     required: true
@@ -186,7 +186,7 @@ files:
     description: "Mega CD BIOS (Japan)"
     source_ref: "desktop-ui/emulator/mega-cd.cpp:18"
 
-  - name: bios_CD_E.bin
+  - name: eu_mcd2_9303.bin
     system: mega-cd
     region: [europe, oceania]
     required: true
@@ -216,7 +216,7 @@ files:
     source_ref: "desktop-ui/emulator/mega-ld.cpp:17"
 
   # --- MSX ---
-  - name: MSX.ROM
+  - name: msx-japanese.rom
     system: msx
     required: true
     sha256: "413a2b601a94b3792e054be2439cc77a1819cceadbfa9542f88d51c7480f2ef0"
@@ -225,7 +225,7 @@ files:
     source_ref: "desktop-ui/emulator/msx.cpp:19"
 
   # --- MSX2 ---
-  - name: MSX2.ROM
+  - name: MSX2J.rom
     system: msx2
     required: true
     sha256: "0c672d86ead61a97f49a583b88b7c1905da120645cd44f0c9f2baf4f4631e0b1"

tests/test_audit_regressions.py

@@ -5220,5 +5220,32 @@ class VerifyPacksRefusesWhatItCannotDo(unittest.TestCase):
                 self.assertFalse((Path(out) / ".lock").exists())
 
 
+class AHashScanningCoreContradictsNoPlatform(unittest.TestCase):
+    """ares finds its firmware by sha256 in a folder and opens no file by
+    name, so its entries' names are labels. Labels reused from other dumps
+    (MSX2.ROM, bios_CD_U.bin) put ares's revision on a path where RetroBat
+    pins another: slots called RetroBat's declaration wrong, and the pack
+    dropped ares's own dump behind the platform's."""
+
+    def test_no_conflict_names_ares(self):
+        import json
+
+        from scripts import slots
+        from scripts.common import list_registered_platforms, load_emulator_profiles
+
+        root = ROOT
+        if not (root / "database.json").exists():
+            self.skipTest("database.json is not built")
+        profiles = load_emulator_profiles(str(root / "emulators"))
+        db = json.loads((root / "database.json").read_text(encoding="utf-8"))
+        claimed = [
+            (platform, conflict.destination)
+            for platform in list_registered_platforms(str(root / "platforms"), include_archived=True)
+            for conflict in slots.scan_platform(platform, profiles, db, str(root / "platforms"))
+            if any(claim.emulator == "ares" for claim in conflict.profile_claims)
+        ]
+        self.assertEqual(claimed, [])
+
+
 if __name__ == "__main__":
     unittest.main()