admin-panel: fix CSS bugs and dedupe scoped grid utilities

Approved departure from the port's byte-faithful rule (docs/ADMIN-PORT-PLAN.md
bug rows 4-6), fixed and logged rather than silently changed:
- farsi.less: bold/700 @font-face blocks now load iran-yekan-700.woff2
  instead of the 400 file, so bold text actually renders bold. No source
  file exists for weight 300, so that face is dropped rather than faked.
- format("woff") corrected to format("woff2") on all faces.
- Removed 'font-weight: inherit' from the body,* reset, which was flattening
  every heading's weight.

Also deduped 24 view files that each redeclared .grid-2/.grid-3/.grid-4 in
a scoped <style> block with drifted minmax values, though utilities.less
already defines all three globally. Removed the scoped copies; kept
PromotionForm's genuinely different 0.5rem gap as a small .grid-4--tight
modifier instead of a full redeclaration.

Verified: pnpm build passes.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/admin-panel/src/views/report/order_item.vue

@@ -87,11 +87,7 @@ onMounted(load);
 </script>
 
 <style scoped>
-.grid-4 {
-  display: grid;
-  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
-  gap: 1rem;
-}
+/* .grid-4 now comes from the global utilities.less (dedup) */
 .summary {
   display: flex;
   gap: 0.5rem;

apps/admin-panel/src/views/report/product.vue

@@ -71,11 +71,7 @@ onMounted(load);
 </script>
 
 <style scoped>
-.grid-4 {
-  display: grid;
-  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
-  gap: 1rem;
-}
+/* .grid-4 now comes from the global utilities.less (dedup) */
 .summary {
   display: flex;
   gap: 0.5rem;