fix(ci): filter download-artifact to exclude docker buildx metadata f…

…iles

feat(proxy-provider): use MD5 hash for unique provider naming

- Generate provider name using MD5 hash (first 10 chars) of subscription URL
- URL is decoded before hashing to ensure consistency
- Same subscription URL always generates the same provider name
- Different URLs generate different names, triggering client auto-update
- Add debug logging for provider hash generation

chore: sync dev to master

fix(ci): use ubuntu-latest for arm64 builds on master

Release v1.0.7