Document the full history of local LLM selection:
- Mistral → GLM → Gemma 4 26B MoE with reasons for each change
- Side-by-side benchmarks: Gemini vs Gemma4 vs GLM vs Mistral
- Quality comparison (language, tool calling, links, hallucination)
- Resource usage (params, RAM, disk, offline capability)
- Configuration examples for dev and prod
- doc/28-AI-CHAT-AGENT.md: comprehensive technical documentation covering
architecture, agent design, query_cv tool, HTMX integration, graceful
degradation, security, and example conversations
- README.md: add AI Chat Agent section with examples, ADK Go badge,
updated tech stack and documentation index
- doc/00-GO-DOCUMENTATION-INDEX.md: add chat agent to doc index