Describe GET /home/summary endpoint (plan, logged calories, expiring
products, cached recommendations) and HomeScreen layout with calorie
ring, today's meals, expiring banner, and quick actions.
Update Summary.md to include iteration 5 and fix provider references
from Gemini/Groq to OpenAI/GPT.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
