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Replaces the hardcoded message limit with a model-driven paywall and removes registration before the first question: - Onboarding: the app opens directly into the chat. Dynamic conversation starters are served by GET /suggestions (services/api/suggestions.json), updatable with a deploy — no app release needed. Guests chat via POST /guest/chat, identified by an app-generated device id; sign-in moves to the paywall, where a purchase must attach to an account. - Free experience: the model runs in discovery mode — follow-up questions, pattern identification, visible understanding — building an analysis without delivering the full solution. - Intelligent paywall: the model returns structured output (reply + analysis_ready). Only when the problem is described, the information is sufficient and an action plan is ready does it write a calm transition and pause the conversation. Manufactured urgency, emotional pressure, fake readiness and mid-answer stops are explicitly forbidden. - Premium: on unlock the app resends the transcript and the backend immediately delivers the full analysis, strategies and exercises, then the dialogue continues without restriction. - The old FREE_MESSAGE_LIMIT becomes MESSAGE_CAP (default 200/30 days), kept purely as an abuse backstop — it is not the paywall. - WelcomeScreen removed; the app is now two views (Chat, Paywall). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0118DaxZR36RpnY524vRqx3z