refactor: fix code review findings across all scripts

Critical: stream large file downloads (OOM fix), fix basename match
in auto_fetch, include hashes in pack grouping fingerprint, handle
not_in_zip status in verify, fix escaped quotes in batocera parser.

Important: deduplicate shared group includes, catch coreinfo network
errors, fix NODEDUP path component match, fix CI word splitting on
spaces, replace bare except Exception in 3 files.

Minor: argparse in list_platforms, specific exceptions in download.py.

scripts/auto_fetch.py

@@ -142,7 +142,7 @@ def step2_scan_branches(entry: dict) -> bytes | None:
         )
 
         for filepath in result.stdout.strip().split("\n"):
-            if filepath.endswith(f"/{name}") or filepath == name or filepath.endswith(name):
+            if os.path.basename(filepath) == name:
                 try:
                     blob = subprocess.run(
                         ["git", "show", f"{ref}:{filepath}"],