8 add client side entitlement layer and feature flag system#25
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PAMulligan merged 2 commits intoJul 21, 2026
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Implements the free/Pro split (closes #9), stacked on the #8 entitlement layer. AI provider migrated OpenAI -> Anthropic as part of the same change. Free/Pro matrix (docs/free-vs-pro-gating.md): - SEO scoring + score breakdown: fully free, never gated. - AI recommendations: free via a capped, server-metered hosted proxy; Pro gets a higher proxy cap or unlimited with their own key. - Advanced options, multi-language output, schema generation, and BYO key: Pro only. Every gate reads an entitlement-store flag (canUse*/isPro), never an ad-hoc apiKey check. Three AI paths (app/src/lib/ai.ts + entitlement-store useAiStatus): - byok: Pro + own Anthropic key -> browser->Anthropic directly, unlimited. - pro: Pro, no key -> hosted proxy authenticated by X-Optia-Entitlement. - free: not Pro -> hosted proxy metered by install id. A stored key only unlocks the direct path when isPro, so a free user can never self-serve uncapped AI. The BYO key never transits Optia's backend. Provider migration: - openai.ts -> anthropic.ts using @anthropic-ai/sdk (claude-opus-4-8, dangerouslyAllowBrowser); new ai-proxy.ts for POST /ai/generate; ai.ts facade routes + records server-authoritative quota. Storage key openai_api_key -> anthropic_api_key; dev CORS proxy and all UI labels updated to Anthropic. Quota is server-authoritative: /ai/generate returns quota {limit,remaining, period} which the client caches; on a server quota_exceeded the client drives remaining to 0 so the gate converges to a friendly upsell (no dead ends). Free users generate on demand (auto-generate only runs on the uncapped byok/pro paths) to conserve the monthly allowance. Note: the shipped backend meters a MONTHLY free allowance (not the daily cap the issue proposed); the client follows the backend. Tests: 411 passing. New coverage for the proxy client, the Anthropic direct client, the AI router (all three paths + locked + quota-exhaustion lock + metered-subject), the quota model, and free/Pro rendering of every gated surface (schema, multi-language, BYO-key, advanced options, and the scoring-stays-free guarantee). tsc + vite build + eslint all green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
…e-vs-pro-feature-gating feat(gating): free vs Pro feature gating + Anthropic migration
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