From the live purchase repro in #5600 (screenshots there). Pro entitlement is `apiAccess: false, mcpAccess: true` — but the activation wizard's step 3 card says "Get your API & MCP keys" and deep-links to Settings → API KEYS tab, which shows a Pro user "Upgrade to API Starter" seconds after they paid for Pro.

Fix:

• Deep link → MCP CLIENTS tab (the capability Pro actually has).
• Copy → "Set up MCP" (drop the API-keys promise for the Pro plan; API keys belong to the API plans).
• Sites: the power-step extras in `src/components/ProActivationInterstitial.ts` (`buildPowerExtra` / `openApiKeys` wiring in `src/app/pro-activation-controller.ts:buildFlowOptions`).

⚠️ Copy change = ~24-locale fan-out + en.shell.json mirror gate (`proActivation` keys, register-calibrated; fa follows its file convention).