fix(desktop): refuse backtick in URL artifact capture (#118415)

normalizeValue's trailing trim cannot save a URL captured THROUGH its
closing inline-code backtick when punctuation follows the delimiter
(`https://voice.qwickapps.com`,): the punctuation strip runs first and
leaves the backtick on the stored value/href, so the preview fails.
Exclude the backtick from URL_RE's char class — the capture now stops at
the delimiter itself, matching PATH_RE which already refuses it.

Builds on #118416 (cherry-picked in the previous commit).

apps/desktop/src/app/artifacts/artifact-utils.ts

@@ -30,7 +30,7 @@ export interface ArtifactLoadResult {
 
 const MARKDOWN_IMAGE_RE = /!\[([^\]]*)\]\(([^)\s]+)\)/g
 const MARKDOWN_LINK_RE = /\[([^\]]+)\]\(([^)\s]+)\)/g
-const URL_RE = /https?:\/\/[^\s<>"')]+/g
+const URL_RE = /https?:\/\/[^\s<>"')`]+/g
 const PATH_RE = /(^|[\s("'`])((?:\/|~[\\/]|\.\.?[\\/]|\\\\)[^\s"'`<>]+(?:\.[a-z0-9]{1,8})?)/gi
 const WINDOWS_PATH_RE = /(^|[\s("'`])([A-Za-z]:[\\/][^\s"'`<>]+(?:\.[a-z0-9]{1,8})?)/gi
 const IMAGE_EXT_RE = /\.(?:png|jpe?g|gif|webp|svg|bmp)(?:\?.*)?$/i

apps/desktop/src/app/artifacts/index.test.ts

@@ -65,6 +65,26 @@ describe('collectArtifactsForSession', () => {
     })
   })
 
+  it('stops a URL capture at a closing backtick even when punctuation follows it', () => {
+    // The closing delimiter can carry trailing punctuation (`…`,) — the
+    // trailing-punctuation trim alone would leave the backtick behind, so the
+    // capture itself must refuse it.
+    const artifacts = collectArtifactsForSession(makeSession(), [
+      {
+        content: 'Deployed at `https://voice.qwickapps.com`, take a look.',
+        role: 'assistant',
+        timestamp: 2000
+      }
+    ])
+
+    expect(artifacts).toHaveLength(1)
+    expect(artifacts[0]).toMatchObject({
+      href: 'https://voice.qwickapps.com',
+      kind: 'link',
+      value: 'https://voice.qwickapps.com'
+    })
+  })
+
   it('does not index passive links and paths observed in tool output', () => {
     const messages: SessionMessage[] = [
       {