docs: add demo video YouTube link

feat: add Claude MCP demo slide to pitch deck, fix slide numbering

feat: add Mirror Node API proxy, stdio MCP bridge, and demo mode for workflows

fix: skip OAuth and payment in dev mode for MCP tools

fix: add off-chain session fallback for OAuth when smart account unavailable

fix: add in-memory nonce fallback when Redis unavailable

feat: redirect home page to /explore marketplace

fix: update live demo URL to Vercel deployment

fix: remove invalid NODE_OPTIONS from vercel.json

fix: prevent build-time crashes with missing env vars

fix: prevent build crash when SESSION_SECRET not set

feat: add hackathon submission section, workflow validation, and Redis graceful fallback

feat(proxy,sessions,marketplace,api,web): update proxy route, update session key logic, update marketplace

feat(web): update vercel.json

chore(web): update .env.example