fix(webui): polish links and thought timing

webui/src/components/MarkdownTextRenderer.tsx

@@ -272,7 +272,7 @@ function InlineLinkPreviewRow({ link }: { link: InlineLinkPreview }) {
       aria-label={`Open link: ${label}`}
       className={cn(
         "not-prose inline-flex max-w-full items-center gap-2 align-baseline",
-        "text-primary no-underline underline-offset-2 hover:underline",
+        "text-blue-600 no-underline underline-offset-2 hover:underline dark:text-blue-300",
       )}
     >
       <span
@@ -410,7 +410,7 @@ export default function MarkdownTextRenderer({
             href={href}
             target="_blank"
             rel="noreferrer noopener"
-            className="text-primary underline underline-offset-2 hover:opacity-80"
+            className="text-blue-600 underline underline-offset-2 hover:text-blue-700 dark:text-blue-300 dark:hover:text-blue-200"
             {...props}
           >
             {markdownChildren}
@@ -508,7 +508,7 @@ export default function MarkdownTextRenderer({
         "prose-ul:my-2 prose-ol:my-2 prose-li:my-0.5",
         "prose-blockquote:my-3 prose-blockquote:border-l-2 prose-blockquote:font-normal",
         "prose-blockquote:not-italic prose-blockquote:text-foreground/80",
-        "prose-a:text-primary prose-a:underline-offset-2 hover:prose-a:opacity-80",
+        "prose-a:text-blue-600 prose-a:underline-offset-2 hover:prose-a:text-blue-700 dark:prose-a:text-blue-300 dark:hover:prose-a:text-blue-200",
         "prose-hr:my-6",
         "prose-pre:my-0 prose-pre:bg-transparent prose-pre:p-0",
         "prose-code:before:content-none prose-code:after:content-none prose-code:font-normal",

webui/src/components/MessageBubble.tsx

@@ -573,7 +573,7 @@ export function ReasoningBubble({
               "prose-headings:mt-2 prose-headings:mb-1 prose-headings:font-medium",
               "prose-headings:text-muted-foreground/92 prose-strong:text-muted-foreground",
               "prose-h1:text-[15px] prose-h2:text-[13.5px] prose-h3:text-[12.5px] prose-h4:text-[12px]",
-              "prose-a:text-muted-foreground/95 prose-a:underline hover:prose-a:opacity-90",
+              "prose-a:text-blue-600 prose-a:underline hover:prose-a:text-blue-700 dark:prose-a:text-blue-300 dark:hover:prose-a:text-blue-200",
               "prose-code:text-[0.92em]",
             )}
           >

webui/src/components/thread/activity/ReasoningRow.tsx

@@ -36,7 +36,7 @@ export function ReasoningRow({
             "prose-headings:mt-2 prose-headings:mb-1 prose-headings:font-medium",
             "prose-headings:text-muted-foreground/88 prose-strong:text-muted-foreground",
             "prose-h1:text-[15px] prose-h2:text-[13.5px] prose-h3:text-[12.5px] prose-h4:text-[12px]",
-            "prose-a:text-muted-foreground/95 prose-a:underline hover:prose-a:opacity-90",
+            "prose-a:text-blue-600 prose-a:underline hover:prose-a:text-blue-700 dark:prose-a:text-blue-300 dark:hover:prose-a:text-blue-200",
             "prose-code:text-[0.92em]",
           )}
         >