feat: batocera 679/680, fix variant indexing, add hikaru + segaboot

Fix variant name indexing: files in .variants/ now indexed under
canonical name (naomi2.zip instead of naomi2.zip.da79eca4).
Fix .zip detection for variant paths in verify.py.
Add composite MD5 matching in resolver for ZIP variants.

Add hikaru.zip (MAME 0.285, 6 ROMs) and segaboot.gcm (Triforce)
from archive.org. Both match Batocera expected MD5s.

Batocera 679/680 (1 untested: sc3000 private dump)
Recalbox 346/346 (100%)

scripts/generate_db.py

@@ -38,6 +38,17 @@ def should_skip(path: Path) -> bool:
     return False
 
 
+def _canonical_name(filepath: Path) -> str:
+    """Get canonical filename, stripping .variants/ hash suffix."""
+    name = filepath.name
+    if "/.variants/" in str(filepath) or "\\.variants\\" in str(filepath):
+        # naomi2.zip.da79eca4 -> naomi2.zip
+        parts = name.rsplit(".", 1)
+        if len(parts) == 2 and len(parts[1]) == 8 and all(c in "0123456789abcdef" for c in parts[1]):
+            return parts[0]
+    return name
+
+
 def scan_bios_dir(bios_dir: Path, cache: dict, force: bool) -> dict:
     """Scan bios directory and compute hashes, using cache when possible."""
     files = {}
@@ -69,11 +80,11 @@ def scan_bios_dir(bios_dir: Path, cache: dict, force: bool) -> dict:
                 if sha1 in files:
                     if sha1 not in aliases:
                         aliases[sha1] = []
-                    aliases[sha1].append({"name": filepath.name, "path": rel_path})
+                    aliases[sha1].append({"name": _canonical_name(filepath), "path": rel_path})
                 else:
                     entry = {
                         "path": rel_path,
-                        "name": filepath.name,
+                        "name": _canonical_name(filepath),
                         "size": size,
                         **hashes,
                     }
@@ -86,11 +97,11 @@ def scan_bios_dir(bios_dir: Path, cache: dict, force: bool) -> dict:
         if sha1 in files:
             if sha1 not in aliases:
                 aliases[sha1] = []
-            aliases[sha1].append({"name": filepath.name, "path": rel_path})
+            aliases[sha1].append({"name": _canonical_name(filepath), "path": rel_path})
         else:
             entry = {
                 "path": rel_path,
-                "name": filepath.name,
+                "name": _canonical_name(filepath),
                 "size": size,
                 **hashes,
             }

scripts/verify.py

@@ -127,6 +127,14 @@ def resolve_to_local_path(file_entry: dict, db: dict) -> str | None:
                 for path, db_md5 in candidates:
                     if db_md5.lower() == md5_lower:
                         return path
+                # Try composite MD5 for ZIP files (Recalbox uses Zip::Md5Composite)
+                for path, _ in candidates:
+                    if ".zip" in os.path.basename(path):
+                        try:
+                            if md5_composite(path).lower() == md5_lower:
+                                return path
+                        except (zipfile.BadZipFile, OSError):
+                            pass
             if candidates:
                 primary = [p for p, _ in candidates if "/.variants/" not in p]
                 return primary[0] if primary else candidates[0][0]
@@ -194,7 +202,7 @@ def verify_entry_md5(file_entry: dict, local_path: str | None) -> dict:
 
     # Recalbox uses Zip::Md5Composite() for ZIP files: sorts filenames,
     # hashes all contents sequentially. Independent of compression level.
-    if local_path.endswith(".zip"):
+    if ".zip" in os.path.basename(local_path):
         try:
             composite = md5_composite(local_path)
             composite_lower = composite.lower()