Label: large ID below barcode (9pt, same as title), left-align text

- Barcode rendered without embedded text (includetext: false)
- ID rendered as separate HTML text at 9pt bold with letter-spacing
- All label text left-aligned instead of centred
- Barcode height reduced to 5mm to fit

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

src/lib/server/barcode.ts

@@ -7,8 +7,7 @@ export async function generateBarcodeSvg(text: string): Promise<string> {
 		text,
 		scale: 2,
 		height: 8,
-		includetext: true,
-		textsize: 10,
+		includetext: false,
 		textxalign: 'center'
 	});