Phase 4 Stage 1: backend foundation (additive endpoints + schema)
Schema (idempotent migration):
- payment_sessions.is_free_trial -> is_first_session_discount (data copied)
- payment_sessions.mode TEXT NOT NULL DEFAULT 'chat' CHECK (chat|call)
- chat_sessions.topics TEXT[] for ESP picks (info-only)
New endpoints:
- GET /api/client/onboarding-state (drives verif sheet + S6 paywall gate)
- GET /api/client/chat-pricing (rewrite: chat+call groups + first-session
discount block, per-customer eligibility)
- GET /api/shared/auth-providers (env-probed; replaces ENABLE_SOCIAL_AUTH
build flag — frontend cutover lands in stage 2)
- GET /api/client/support-handles (Tanya Admin handles, CC-config-driven)
session_warning WS event fires once at 180s remaining.
app_config seeds (mock pricing tiers, first-session discount, support
handles, payment method order, end-session 2-step toggle).
CC SettingsPage: 3 new sections (first-session discount, pricing tiers
JSON editors, support handles).
15/15 Vitest passing. chat_sessions.is_free_trial also renamed for
consistency (plan only specified payment_sessions; pairing.service.js
read both).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ramadhan sjamsani
d33d4419ea