feat: fruit overview with thumbnails and card layout (story #07)

- Auto-crop thumbnails on image upload (Go stdlib, no external deps):
  find non-background bounding box, pad 5px, scale to ≤300px, encode JPEG
- Add thumbnail_data BYTEA column to fruit_images and publication_fruit_images
- New GET /api/v1/fruits/:id/images/:imageId/thumbnail endpoint (fallback to full data)
- New GET /api/v1/publications/:id/fruit-images/:imgId/thumbnail endpoint
- New POST /api/v1/admin/backfill-thumbnails to retroactively generate thumbnails
- ListFruits response now includes synonyms and thumbnail_url per fruit
- Replace FruitList table with responsive FruitCard grid (thumbnail + name + OSDB ID + type + synonyms)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

This commit is contained in:

julia

2026-06-19 09:02:14 +02:00

co-authored by

Claude Sonnet 4.6

parent 2525e8b68d

commit 649c9687ac

17 changed files with 591 additions and 48 deletions

									
										backend/migrations/000004_add_thumbnails.down.sql
									
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				ALTER TABLE fruit_images DROP COLUMN thumbnail_data;

				ALTER TABLE publication_fruit_images DROP COLUMN thumbnail_data;