fix(web-ui): add @tailwindcss/typography plugin to fix table rendering in docs

The Markdown component uses 'prose' classes (prose-lg prose-headings:)
but @tailwindcss/typography was not installed/registered. Tables and other
MD elements rendered unstyled. Fix: install @tailwindcss/typography@latest,
register via @plugin directive in globals.css, add custom dark-theme
table styles, and remove redundant tailwind.config.js.

apps/web/app/globals.css

@@ -1,4 +1,5 @@
 @import "tailwindcss";
+@plugin "@tailwindcss/typography";
 
 /* Linear design system: dark-mode-first */
 @custom-variant dark (&:where(.dark, .dark *));
@@ -42,3 +43,32 @@ body {
   font-display: swap;
   src: url("https://fonts.gstatic.com/s/inter/v19/UcCO3FwrK3iLTeHuS_nVMrNCGw.woff2") format("woff2");
 }
+
+/* Custom prose styles for dark theme — tables */
+.prose table {
+  width: 100%;
+  border-collapse: collapse;
+  margin: 1.5rem 0;
+  font-size: 0.9rem;
+}
+
+.prose th,
+.prose td {
+  border: 1px solid var(--color-border);
+  padding: 0.5rem 0.75rem;
+  text-align: left;
+}
+
+.prose th {
+  background: var(--color-elevated);
+  color: var(--color-text-primary);
+  font-weight: 600;
+}
+
+.prose td {
+  color: var(--color-text-secondary);
+}
+
+.prose tbody tr:nth-child(even) {
+  background: rgba(15, 16, 17, 0.5);
+}