Add glass UI with backdrop blur and fix primary button colors

Apply glassmorphism to sidebar, cards, tables, modals, dropdowns,
and dialogs with semi-transparent backgrounds, backdrop-blur, and
white/15 borders. Add subtle gradient body background for the blur
to work against. Add dedicated btn-primary color tokens so primary
buttons stay bold in dark mode instead of using the brightened text
palette. Use shadow-sm to avoid heavy halos in light mode.

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

resources/scripts/components/base/base-table/BaseTable.vue

@@ -6,9 +6,9 @@
           class="
             relative
             overflow-hidden
-            bg-surface
-            border border-line-light
-            shadow
+            bg-surface/70 backdrop-blur-lg
+            border border-white/15
+            shadow-sm
             rounded-xl
           "
         >