Summary

• sync the CLI ai adapter registry with all existing packages/ai/* provider directories
• expose BYOK provider commands through the generic adapter surface, e.g. sh1pt ai groq info and sh1pt ai mistral setup
• update the category description to reflect the broader provider set

Verification

• filesystem check: packages/ai has 59 provider directories and the registry now has 59 entries, with no missing or extra adapters
• npm run typecheck (packages/cli)
• npm run build (packages/cli)

Closes #245

Related to the accepted Ugig sh1pt CLI/package PR gig.