Genkit MCP

# No new actions at runtime error Defining new actions at runtime is not allowed. ✅ DO: ```ts const prompt = defineDotprompt({...}) const flow = defineFlow({...}, async (input) => { await prompt.generate(...); }) ``` ❌ DON'T: ```ts const flow = defineFlow({...}, async (input) => { const prompt = defineDotprompt({...}) prompt.generate(...); }) ```