fix: round 2 audit fixes, updated emulator profiles

Scripts:
- fix generate_site nav regex destroying mkdocs.yml content
- fix auto_fetch comma-separated MD5 in find_missing
- fix verify print_platform_result conflating untested/missing
- fix validate_pr path traversal and symlink check
- fix batocera_scraper brace counting and escaped quotes in strings
- fix emudeck_scraper hash search crossing function boundaries
- fix pipeline.py cwd to repo root via Path(__file__)
- normalize SHA1 comparison to lowercase in generate_pack

Emulator profiles:
- emux_gb/nes/sms: reclassify from alias to standalone profiles
- ep128emu: remove .info-only files not referenced in source
- fbalpha2012 variants: full source-verified profiles
- fbneo_cps12: add new profile

scripts/generate_pack.py

@@ -53,7 +53,7 @@ def _verify_file_hash(path: str, expected_sha1: str = "",
         return True
     hashes = compute_hashes(path)
     if expected_sha1:
-        return hashes["sha1"] == expected_sha1
+        return hashes["sha1"].lower() == expected_sha1.lower()
     md5_list = [m.strip().lower() for m in expected_md5.split(",") if m.strip()]
     return hashes["md5"].lower() in md5_list