fix(stocktake-pdf): add cell padding so columns have visible gaps

The previous layout had numeric columns (Current, Min, Max —
right-aligned) flush against the Status column (left-aligned).
A row like '100In stock' read as a single mashed string
because there was no whitespace between the right edge of the
Max column and the left edge of the Status column.

Fix: add paddingRight: 8 to the three numeric columns and
paddingLeft: 8 to the Status column. Right-aligned numbers
now end 8pt before the column boundary, and the Status text
starts 8pt inside its column — visible gap between columns,
even with the Status sitting right next to Max.

Co-authored-by: Orca <help@stably.ai>

src/lib/pdf/stock-item-stocktake-document.tsx

@@ -52,10 +52,10 @@ const styles = StyleSheet.create({
   cSku: { width: "10%" },
   cName: { width: "24%" },
   cSupplier: { width: "18%" },
-  cCurrent: { width: "9%" },
-  cMin: { width: "8%" },
-  cMax: { width: "9%" },
-  cStatus: { width: "16%" },
+  cCurrent: { width: "9%", paddingRight: 8 },
+  cMin: { width: "8%", paddingRight: 8 },
+  cMax: { width: "9%", paddingRight: 8 },
+  cStatus: { width: "16%", paddingLeft: 8 },
   spacer: { width: "6%" },
   empty: { marginTop: 24, color: "#666", fontSize: 10, textAlign: "center" },
 });