Fix blank-screen crash when clearing the conversation mid-stream

Polished README: live demo link, recorded GIF, deployment-era features + lessons

Code-review fixes: guard empty SSE choices, unstick UI on truncated stream

Fix Z.ai model id, surface LLM errors as SSE frames, cache-friendly Docker layers

Model switcher, public hardening, and CI (steps 1-3+5 of deploy plan)

Apply ponytail audit: delete dead endpoints, scripts, params, and assets

Added changed bot locatio nand edited some buttons

Add interactive mesh background, glass chrome, and reactive mascot

Add design-token system + reactive Rive mascot

Consolidate docs into eval/IMPROVEMENTS.md; gitignore .claude

Fix dark-mode readability: deterministic dark theme for the app chrome

Add ELI5 "explain simply" button + scrape jargon from all answer prompts

Fix LaTeX rendering: normalize \(…\)/\[…\] delimiters before markdown

Stream answers over SSE (/ask/stream, /why/stream) + stop button

Add PDF page citations (side-tab viewer) + "Why?" deeper-dive

V2: local web UI (FastAPI + React/Tailwind) + 8GB GPU fixes