2026-06-11 — free-tier chatbot survival kit

line_quota_watch.py — LINE OA broadcast quota watcher + THB overage estimate (cron-ready exit codes)
true_cost_calculator.js — true monthly cost: free vs self-host vs platform vs agency, incl. your own hours
faq_router_zero_token.js — answer top Thai FAQ with 0 tokens before the LLM (60–80% of SME chats)
webhook_dedupe.py — LINE/Meta webhook redelivery dedupe with TTL cache — stop double LLM calls
free_llm_fallback.js — Gemini-free → Groq-free fallback router with 429 cooldown
free-tier-limits-2026.md — free-tier limits cheat sheet (TH market, Jun 2026)