fix: refuse abbreviated flags in every script

argparse completed a prefix into the only flag starting with it:
slots.py --emulator read profiles from a directory named after the
emulator and reported nothing, and pipeline.py --all built every pack
variant. Every parser now refuses an abbreviation.

scripts/auto_fetch.py

@@ -415,7 +415,7 @@ def generate_issue_body(missing: list[dict], platform: str) -> str:
 
 
 def main() -> None:
-    parser = argparse.ArgumentParser(description="Auto-fetch missing BIOS files")
+    parser = argparse.ArgumentParser(allow_abbrev=False, description="Auto-fetch missing BIOS files")
     parser.add_argument("--platform", "-p", help="Platform to check")
     parser.add_argument("--all", action="store_true", help="Check all platforms")
     parser.add_argument(