Add env example, gitignore, and Node version pin.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

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+PORT=3010
+# Production on the API server: use 0.0.0.0, or keep localhost and reverse-proxy via nginx → 127.0.0.1:3010
+HOST=localhost
+NODE_ENV=development
+
+# Same MongoDB as EventBuzz backend / dashboard
+MONGODB_URI=mongodb://localhost:27017/eventbuzz
+
+# CORS (comma-separated). Dev also allows localhost / 127.0.0.1 any port.
+# CORS_ORIGIN=http://localhost:5173
+
+# AWS credentials for Bedrock Converse
+AWS_ACCESS_KEY_ID=
+AWS_SECRET_ACCESS_KEY=
+# AWS_SESSION_TOKEN=
+AWS_DEFAULT_REGION=ap-south-1
+# BEDROCK_REGION=ap-south-1
+
+# Tool-calling agent (router + synthesis). Falls back to BEDROCK_CALL2_MODEL_ID.
+# Haiku 4.5 in ap-south-1 needs the global inference profile (no in-region ID).
+BEDROCK_AGENT_MODEL_ID=global.anthropic.claude-haiku-4-5-20251001-v1:0
+BEDROCK_CALL2_MODEL_ID=global.anthropic.claude-haiku-4-5-20251001-v1:0
+# BEDROCK_USE_INFERENCE_PROFILES=auto
+# BEDROCK_LOG_LLM=true
+# Prompt cache (default on). Haiku 4.5 caches tools + system + EVENT (1h TTL).
+# Requires ~4096 tokens in the cached prefix before a hit shows in cacheReadInputTokens.
+# BEDROCK_PROMPT_CACHE=false
+
+# Agenda "now" calculations
+EVENT_TIME_ZONE=Asia/Kolkata
+
+# Public registration form URLs (same as backend)
+# MICROSITE_PUBLIC_BASE_URL=https://web.eventbuzz.live
+# MICROSITE_REGISTRATION_URL_TEMPLATE=https://web.eventbuzz.live/event/{eventId}/form/{formId}
+
+# Engagement hub unique links for reception drips ({engagementUrl})
+# ENGAGEMENT_PUBLIC_BASE_URL=https://engage.eventbuzz.live
+
+# S3 + CloudFront for participant check-in QR (same as backend)
+# AWS_BUCKET=rapportapp
+# AWS_URL=https://xxxx.cloudfront.net
+# Optional local fallback origin when S3 is unset (defaults to http://HOST:PORT)
+# CONCIERGE_PUBLIC_ORIGIN=http://localhost:3010
+
+# Email OTP for personal agenda / ticket intents
+OTP_PEPPER=change-me-concierge-otp
+# CONCIERGE_OTP_MODE=fixed|dynamic  (default: dynamic)
+CONCIERGE_OTP_MODE=dynamic
+# Used only when CONCIERGE_OTP_MODE=fixed
+CONCIERGE_FIXED_OTP=123123
+# MAIL_* (preferred) or SMTP_* fallback — copy from backend/.env; if unset, OTP is logged to console
+# MAIL_HOST=smtp.sendgrid.net
+# MAIL_PORT=587
+# MAIL_USERNAME=apikey
+# MAIL_PASSWORD=
+# MAIL_ENCRYPTION=tls
+# MAIL_FROM_ADDRESS=
+# MAIL_FROM_NAME=Rapport Support
+# Testing only: deliver all outbound mail here (chat still shows the real recipient)
+# MAIL_TEST_REDIRECT_TO=you@example.com
+
+# Organizer escalation (emergency / lost & found / talk to human).
+# Preferred: Organization.email on the bot's organization. Fallback:
+# CONCIERGE_ORGANIZER_EMAIL=organizer@example.com
+
+# WhatsApp reception (same Meta app webhook verify token as chatbot).
+# Point Meta webhook to https://<concierge-host>/webhook/whatsapp
+# META_WHATSAPP_WEBHOOK_VERIFY_TOKEN=
+# META_GRAPH_API_VERSION=v21.0
+# Org token decrypt (must match backend SMTP_ENCRYPTION_KEY)
+# SMTP_ENCRYPTION_KEY=
+# ORG_SECRETS_KEY=
+# META_WHATSAPP_DEFAULT_WABA_ID=
+# META_WHATSAPP_ACCESS_TOKEN=
+# META_WHATSAPP_DEFAULT_PHONE_NUMBER_ID=
+
+SMTP_HOST=
+SMTP_PORT=587
+SMTP_USER=
+SMTP_PASS=
+
+# LiveKit Cloud (embedded website voice). Keys from the project Keys page.
+# Keep LIVEKIT_API_KEY and LIVEKIT_API_SECRET in concierge/.env, then run:
+#   npm run livekit-voice-worker
+# LIVEKIT_URL=wss://prana-tsa7vuj2.livekit.cloud
+# LIVEKIT_API_KEY=
+# LIVEKIT_API_SECRET=
+# LIVEKIT_AGENT_NAME=eventbuzz-concierge
+# STT: Indian English (use "multi" if you need Hindi + English mixed).
+# LIVEKIT_STT_MODEL=deepgram/nova-3
+# LIVEKIT_STT_LANGUAGE=en-IN
+# TTS: female Indian English (Cartesia "Indian Customer Support Lady").
+# LIVEKIT_TTS_MODEL=cartesia/sonic-3
+# LIVEKIT_TTS_VOICE=ff1bb1a9-c582-4570-9670-5f46169d0fc8
+# LIVEKIT_TTS_LANGUAGE=en
+
+# SIMLI avatar (sample page /embed/avatar). Key stays on the server.
+SIMLI_API_KEY=
+SIMLI_FACE_ID=

.gitignore

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+node_modules/
+.env
+*.log
+coverage/
+.nyc_output/
+.DS_Store

.nvmrc

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+20