- Remove Groq and NVIDIA fallback from text moderation pipeline
- Remove GROQ_API_KEY, GROQ_MODERATION_*, NVIDIA_NEMOTRON_* config vars
- Update source enum: remove 'groq' and 'nvidia' from cache/schema types
- Rewrite indonesianTextNormalizer to use Primary AI only (no fallback chain)
- Rewrite remote test to test Primary AI only
- Fix stickerCache executeGet missing empty params array
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>