592c86f8d4
Extends GET /api/v1/users/me/nutrition-diary with a `range` query param (7/30/90) that switches it into trend mode -- daily calorie/macro totals bucketed from the same cooking-history rows the single-day diary already reads, with zero-filled days so the chart has a continuous x-axis. New NutritionTrend component reuses the existing hand-rolled TimeSeriesChart (previously admin-only, now imported from user-facing code too) for the calorie line, plus simple average-macro stat tiles below it. Nutrition page now has Diary/Trend tabs instead of just the diary. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>