Use order-insensitive token comparison in calculate_filename_confidence
so variant names with reordered tokens (e.g., int8_convrot vs convrot_int8)
score higher. Replace first-match partial matching in HuggingFace source with
best-match selection based on filename confidence, and surface confidence in
search results.
- Preserve HuggingFace textual model/version IDs in download metadata instead of coercing to integers
- Add convrot as a recognized model variant suffix
- Recognize numeric precision tokens with optional mixed/scaled suffixes (e.g. int8mixed, fp8scaled)
- Report partial batch search failures as informational notifications rather than errors