fix(desktop): render autolinked message links as chips

desktop/src/features/messages/lib/messageLink.test.mjs

@@ -5,6 +5,7 @@ import {
   buildMessageLink,
   isMessageLink,
   parseMessageLink,
+  resolveMessageLinkRenderTarget,
 } from "./messageLink.ts";
 
 const CHANNEL = "f570339f-8f8a-4e08-a779-8d954aa44109";
@@ -118,3 +119,31 @@ test("isMessageLink matches buzz://message and legacy buzz://message", () => {
   assert.equal(isMessageLink(undefined), false);
   assert.equal(isMessageLink(""), false);
 });
+
+test("resolveMessageLinkRenderTarget distinguishes autolinks from labeled links", () => {
+  const href = `buzz://message?channel=${CHANNEL}&id=${MESSAGE}`;
+
+  assert.deepEqual(resolveMessageLinkRenderTarget({ href, label: href }), {
+    kind: "pill",
+    link: {
+      channelId: CHANNEL,
+      messageId: MESSAGE,
+      threadRootId: null,
+    },
+  });
+  assert.deepEqual(resolveMessageLinkRenderTarget({ href, label: "message" }), {
+    kind: "label",
+    link: {
+      channelId: CHANNEL,
+      messageId: MESSAGE,
+      threadRootId: null,
+    },
+  });
+  assert.deepEqual(
+    resolveMessageLinkRenderTarget({
+      href: "https://example.com",
+      label: href,
+    }),
+    { kind: "none" },
+  );
+});

desktop/src/features/messages/lib/messageLink.ts

@@ -102,3 +102,34 @@ export function isMessageLink(href: string | undefined | null): boolean {
   if (!href) return false;
   return href.startsWith("buzz://message?") || href === "buzz://message";
 }
+
+type MessageLinkRenderInput = {
+  href: string;
+  label: string;
+};
+
+export type MessageLinkRenderTarget =
+  | { kind: "pill"; link: ParsedMessageLink }
+  | { kind: "label"; link: ParsedMessageLink }
+  | { kind: "none" };
+
+/**
+ * Centralizes how markdown-rendered anchors map to message-link UI. Both
+ * CommonMark autolinks (`<buzz://message?...>`) and explicitly labeled links
+ * arrive as anchors; autolinks have label === href and should render as pills,
+ * while intentionally labeled links keep their label.
+ */
+export function resolveMessageLinkRenderTarget({
+  href,
+  label,
+}: MessageLinkRenderInput): MessageLinkRenderTarget {
+  if (!isMessageLink(href)) return { kind: "none" };
+
+  const parsed = parseMessageLink(href);
+  if (!parsed.ok) return { kind: "none" };
+
+  return {
+    kind: label === href ? "pill" : "label",
+    link: parsed.value,
+  };
+}

desktop/src/shared/ui/markdown.test.mjs

@@ -471,6 +471,11 @@ test("messageLinkUrlTransform: preserves buzz://message href", () => {
   assert.match(html, /href="buzz:\/\/message\?channel=abc&(?:amp;)?id=xyz"/);
 });
 
+test("messageLinkUrlTransform: preserves buzz://message autolink href", () => {
+  const html = renderMarkdown("<buzz://message?channel=abc&id=xyz>");
+  assert.match(html, /href="buzz:\/\/message\?channel=abc&(?:amp;)?id=xyz"/);
+});
+
 test("messageLinkUrlTransform: preserves buzz://message href with thread", () => {
   const html = renderMarkdown(
     "[link](buzz://message?channel=c1&id=m1&thread=t1)",

desktop/src/shared/ui/markdown.tsx

@@ -23,6 +23,7 @@ import { useAppNavigation } from "@/app/navigation/useAppNavigation";
 import {
   isMessageLink,
   parseMessageLink,
+  resolveMessageLinkRenderTarget,
   type ParsedMessageLink,
 } from "@/features/messages/lib/messageLink";
 import { UserProfilePopover } from "@/features/profile/ui/UserProfilePopover";
@@ -79,6 +80,14 @@ type ImetaEntry = {
 
 type ImetaLookup = Map<string, ImetaEntry>;
 
+type MessageLinkPillProps = {
+  channels: Channel[];
+  href: string;
+  interactive: boolean;
+  link: ParsedMessageLink;
+  onOpenMessageLink: (link: ParsedMessageLink) => void;
+};
+
 let shikiHighlighter: HighlighterGeneric<BundledLanguage, BundledTheme> | null =
   null;
 let shikiInitPromise: Promise<void> | null = null;
@@ -1252,6 +1261,46 @@ function getCodeBlockText(children: React.ReactNode) {
   return getReactNodeText(children).replace(/\n$/, "");
 }
 
+function MessageLinkPill({
+  channels,
+  href,
+  interactive,
+  link,
+  onOpenMessageLink,
+}: MessageLinkPillProps) {
+  const channel = channels.find((c) => c.id === link.channelId);
+  const channelLabel = channel?.name ?? "channel";
+  const shortId = link.messageId.slice(0, 6);
+  const label = (
+    <>
+      #{channelLabel} · {shortId}
+    </>
+  );
+
+  if (!interactive) {
+    return <span data-message-link="">{label}</span>;
+  }
+
+  return (
+    <button
+      type="button"
+      data-message-link=""
+      aria-label={`Open message in ${channelLabel}`}
+      title={href}
+      className={cn(
+        "cursor-pointer",
+        MENTION_CHIP_BASE_CLASSES,
+        MENTION_CHIP_HOVER_CLASSES,
+      )}
+      onClick={() => {
+        onOpenMessageLink(link);
+      }}
+    >
+      {label}
+    </button>
+  );
+}
+
 function InlineEmojiPopover({
   alt,
   resolvedSrc,
@@ -1788,18 +1837,32 @@ function createMarkdownComponents(
       // Intercept `buzz://message?channel=…&id=…` links so a click navigates
       // in-app instead of opening the URL in the OS browser. http(s) links
       // continue to use the existing target="_blank" behavior.
-      if (isMessageLink(href)) {
-        const parsed = parseMessageLink(href ?? "");
-        if (parsed.ok) {
-          const target = parsed.value;
+      if (href) {
+        const messageLinkTarget = resolveMessageLinkRenderTarget({
+          href,
+          label: getReactNodeText(children),
+        });
+        if (messageLinkTarget.kind !== "none") {
+          if (messageLinkTarget.kind === "pill") {
+            return (
+              <MessageLinkPill
+                channels={runtimeRef.current.channels}
+                href={href}
+                interactive={interactive}
+                link={messageLinkTarget.link}
+                onOpenMessageLink={onOpenMessageLink}
+              />
+            );
+          }
+
           return (
             <a
               {...props}
               className="font-medium text-primary underline underline-offset-4 transition-colors hover:text-primary/80 cursor-pointer"
               href={href}
               onClick={(event) => {
                 event.preventDefault();
-                onOpenMessageLink(target);
+                onOpenMessageLink(messageLinkTarget.link);
               }}
             >
               {children}
@@ -2095,36 +2158,14 @@ function createMarkdownComponents(
         return <span data-message-link="">{href}</span>;
       }
 
-      const { channelId, messageId } = parsed.value;
-      const channel = channels.find((c) => c.id === channelId);
-      const channelLabel = channel?.name ?? "channel";
-      const shortId = messageId.slice(0, 6);
-
-      if (!interactive) {
-        return (
-          <span data-message-link="">
-            #{channelLabel} · {shortId}
-          </span>
-        );
-      }
-
       return (
-        <button
-          type="button"
-          data-message-link=""
-          aria-label={`Open message in ${channelLabel}`}
-          title={href}
-          className={cn(
-            "cursor-pointer",
-            MENTION_CHIP_BASE_CLASSES,
-            MENTION_CHIP_HOVER_CLASSES,
-          )}
-          onClick={() => {
-            onOpenMessageLink(parsed.value);
-          }}
-        >
-          #{channelLabel} · {shortId}
-        </button>
+        <MessageLinkPill
+          channels={channels}
+          href={href}
+          interactive={interactive}
+          link={parsed.value}
+          onOpenMessageLink={onOpenMessageLink}
+        />
       );
     },
   } as Components;