Refactor text utility classes to Tailwind CSS (#36703)

Replace Fomantic/custom CSS text utility classes with their Tailwind
equivalents:

- `.text.<color>` compound classes → `tw-text-<color>` classes
- `.text.small` (`font-size: 0.75em`) → `tw-text-xs` (11px)
- `.text.truncate` (`overflow-x: hidden; text-overflow: ellipsis;
white-space: nowrap; display: inline-block`) → `tw-inline-block
tw-truncate`

Remove the now-unused CSS rules from `base.css` and `dashboard.css`.

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

models/issues/review.go

@@ -215,25 +215,25 @@ func (r *Review) LoadAttributes(ctx context.Context) (err error) {
 	return err
 }
 
-// HTMLTypeColorName returns the color used in the ui indicating the review
-func (r *Review) HTMLTypeColorName() string {
+// HTMLTypeColorClass returns the CSS class used in the ui indicating the review
+func (r *Review) HTMLTypeColorClass() string {
 	switch r.Type {
 	case ReviewTypeApprove:
 		if !r.Official {
-			return "grey"
+			return "tw-text-text-light"
 		}
 		if r.Stale {
-			return "yellow"
+			return "tw-text-yellow"
 		}
-		return "green"
+		return "tw-text-green"
 	case ReviewTypeComment:
-		return "grey"
+		return "tw-text-text-light"
 	case ReviewTypeReject:
-		return "red"
+		return "tw-text-red"
 	case ReviewTypeRequest:
-		return "yellow"
+		return "tw-text-yellow"
 	}
-	return "grey"
+	return "tw-text-text-light"
 }
 
 // TooltipContent returns the locale string describing the review type