Diversity probe sweep + V1->V4 narrative README + HF Spaces entry + DV/incomplete fixes

Response quality: greeting/goodbye/meta handlers, slang routing, lexical variety, last-verified badge, markdown norm, crisis variants

V4.4 Tier 1: regex hardening, clarify-stage enum, stat caveats, PDF unicode, retry/backoff, reproducibility doc

V4.3: prompt-injection audit, input length cap, per-layer ablation, unguarded baseline, limitations restored

V4.2 part 3: sycophancy guard, F-1 flag decay, incomplete-message handler

V4.2 part 2: authority-misconduct route + conversation history in rephraser

V4.1: fix repetition/scroll/topbar, add PDF export, counselor-assist note

V4: streaming, controlled paraphrasing, support plan, voice, sweeps

Add LLM plan-and-rephrase layer with Groq + Anthropic providers

Add stage-aware listening planner and F-1 student awareness

Polish MVP support experience

Ingest Core dataset and harden router policy

Prepare Core dataset intake and resource registry

Polish peer helper and scope handling

Add Core safety metadata and eval summaries

Implement EmpathRAG Core hybrid router