fix: add 30s cooldown on 400 errors to prevent retry loop

fix: use only free-tier models — Mistral free then Groq free, no paid

fix: use Mistral free-tier models only (mistral-small-latest, nemo, 7b, 8x7b)

fix: increase max retries to 3x slots and add provider logging

fix: handle 403 and unexpected errors in AI pool instead of crashing

upgrade: use best Mistral models with Pro plan

fix: force pool to always prefer primary provider (Mistral first)

fix: replace blocked Groq paid models with available ones

fix: respect AI_PRIMARY_PROVIDER config for pool slot ordering

feat: tiered AI pool — free models first, paid fallback on exhaustion

upgrade: paid-tier AI models + increased concurrency

fix: replace non-existent AI models with working free-tier models

Initial commit — ICC Interac Manager full-stack app