fix: teknoparrot's COH-H image is found by content

The entry documents the pcsx2x6 component, whose FindBiosImage (pcsx2/ps2/BiosTools.cpp:268-291 at 583f0e90) takes the first 4 to 8 MB romdir image whatever its name. pcsx2x6.yml already said so, and the RetroBat truth gave the file two identities. The guard no longer needs an agnostic flag to read an entry.

emulators/teknoparrot.yml

@@ -158,6 +158,7 @@ files:
 
   # pcsx2x6 component, System 246/256 (RetroBat core pcsx2x6)
   - name: COH-H31100.rom0
+    found_by: content
     path: "pcsx2x6/TeknoParrot/bios/COH-H31100.rom0"
     system: namco-system246
     required: true

tests/test_audit_regressions.py

@@ -7089,11 +7089,12 @@ class Ps2BiosImagesAreFoundByContent(unittest.TestCase):
         named = []
         for path in sorted((ROOT / "emulators").glob("*.yml")):
             profile = yaml.safe_load(path.read_text(encoding="utf-8")) or {}
-            agnostic = profile.get("bios_mode") == "agnostic"
+            # Whatever the profile's own flags: TeknoParrot documents its
+            # pcsx2x6 component, whose scan is the same (BiosTools.cpp:268-291
+            # at 583f0e90), and carries no agnostic flag.
             for entry in profile.get("files") or []:
                 if (
-                    (agnostic or entry.get("agnostic"))
-                    and entry.get("min_size") in (2097152, 4194304)
+                    entry.get("min_size") in (2097152, 4194304)
                     and entry.get("max_size") == 8388608
                     and opens_by_name(entry, profile)
                 ):