feat(03-01): add images table and repository

- Add images table with entryId foreign key and cascade delete
- Add Image and NewImage types
- Add ImageRepository with create, getById, getByEntryId, delete, deleteByEntryId
- Install sharp for thumbnail generation

package.json

@@ -35,6 +35,7 @@
 		"better-sqlite3": "^12.6.2",
 		"drizzle-orm": "^0.45.1",
 		"nanoid": "^5.1.6",
+		"sharp": "^0.34.5",
 		"svelte-gestures": "^5.2.2",
 		"svelte-persisted-store": "^0.12.0",
 		"tailwindcss": "^4.1.18",