refactor: quality audit fixes, honest verification reporting

- batocera_scraper: fix OrderedDict parsing for ast.literal_eval
- auto_fetch: fix TypeError when sha1/md5 is None
- verify: filter non-ZIP files for zipped_file entries (F2)
- verify: distinguish ZIP read errors from hash mismatches (F5)
- generate_pack: track seen_destinations with source hash (F7)

Batocera ep64/ep128.zip now correctly reported as MISSING
instead of false UNTESTED (resolved to .rom instead of .zip)

scripts/auto_fetch.py

@@ -345,8 +345,8 @@ def generate_issue_body(missing: list[dict], platform: str) -> str:
     ]
 
     for entry in missing:
-        sha1 = entry.get("sha1", "N/A")
-        md5 = entry.get("md5", "N/A")
+        sha1 = entry.get("sha1") or "N/A"
+        md5 = entry.get("md5") or "N/A"
         lines.append(f"| `{entry['name']}` | {entry['system']} | `{sha1[:12]}...` | `{md5[:12]}...` |")
 
     lines.extend([