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>

templates/user/settings/repos.tmpl

@@ -13,7 +13,7 @@
 								<div class="content">
 									{{if $repo}}
 										{{if $repo.IsPrivate}}
-											<span class="text gold icon">{{svg "octicon-lock"}}</span>
+											<span class="tw-text-gold icon">{{svg "octicon-lock"}}</span>
 										{{else if $repo.IsFork}}
 											<span class="icon">{{svg "octicon-repo-forked"}}</span>
 										{{else if $repo.IsMirror}}
@@ -24,7 +24,7 @@
 											<span class="icon">{{svg "octicon-repo"}}</span>
 										{{end}}
 										<a class="muted name" href="{{$repo.Link}}">{{$repo.OwnerName}}/{{$repo.Name}}</a>
-										<span class="text light-3" {{if not (eq $repo.Size 0)}} data-tooltip-content="{{$repo.SizeDetailsString}}"{{end}}>{{FileSize $repo.Size}}</span>
+										<span class="tw-text-text-light-3" {{if not (eq $repo.Size 0)}} data-tooltip-content="{{$repo.SizeDetailsString}}"{{end}}>{{FileSize $repo.Size}}</span>
 										{{if $repo.IsFork}}
 											{{ctx.Locale.Tr "repo.forked_from"}}
 											<span><a href="{{$repo.BaseRepo.Link}}">{{$repo.BaseRepo.OwnerName}}/{{$repo.BaseRepo.Name}}</a></span>
@@ -84,7 +84,7 @@
 							<div class="item">
 								<div class="content flex-text-block">
 									{{if .IsPrivate}}
-										{{svg "octicon-lock" 16 "text gold"}}
+										{{svg "octicon-lock" 16 "tw-text-gold"}}
 									{{else if .IsFork}}
 										{{svg "octicon-repo-forked"}}
 									{{else if .IsMirror}}