fix(F-05): use icon button for crop trigger and trash icon for image removal

Changed "Adjust framing" text to a crop icon button visible only in
edit mode. Replaced the X icon on the image remove button with a
trash icon for clearer semantics.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/client/components/ImageUpload.tsx

@@ -125,7 +125,7 @@ export function ImageUpload({
 										strokeLinecap="round"
 										strokeLinejoin="round"
 										strokeWidth={2}
-										d="M6 18L18 6M6 6l12 12"
+										d="M3 6h18M19 6v14a2 2 0 01-2 2H7a2 2 0 01-2-2V6m3 0V4a2 2 0 012-2h4a2 2 0 012 2v2"
 									/>
 								</svg>
 							</button>