fix: fall through to issue comment when PR review comment fetch 404s

On Forgejo, pull_request_review_comment events create the tracking
comment as a regular issue comment (because the payload lacks
comment.id for reply-to-review). The update-comment-link step then
tried pulls.getReviewComment() first, which 404'd and threw before
reaching the issues.getComment() fallback.

Wrap the PR review comment fetch in its own try/catch so it falls
through to the issue comment fetch on failure.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/entrypoints/update-comment-link.ts

@@ -66,19 +66,28 @@ export async function updateCommentLink(
     // GitHub has separate ID namespaces for review comments and issue comments
     // We need to use the correct API based on the event type
     if (isPullRequestReviewCommentEvent(context)) {
-      // For PR review comments, use the pulls API
-      console.log(`Fetching PR review comment ${commentId}`);
-      const { data: prComment } = await octokit.rest.pulls.getReviewComment({
-        owner,
-        repo,
-        comment_id: commentId,
-      });
-      comment = prComment;
-      isPRReviewComment = true;
-      console.log("Successfully fetched as PR review comment");
+      // For PR review comments, try the pulls API first.
+      // On Forgejo, the initial comment may have been created as a regular
+      // issue comment (because the payload lacks comment.id), so the pulls
+      // endpoint may 404. Fall through to issue comment fetch in that case.
+      try {
+        console.log(`Fetching PR review comment ${commentId}`);
+        const { data: prComment } = await octokit.rest.pulls.getReviewComment({
+          owner,
+          repo,
+          comment_id: commentId,
+        });
+        comment = prComment;
+        isPRReviewComment = true;
+        console.log("Successfully fetched as PR review comment");
+      } catch {
+        console.log(
+          `Comment ${commentId} not found as PR review comment, trying issue comment`,
+        );
+      }
     }
 
-    // For all other event types, use the issues API
+    // For all other event types, or if the PR review comment fetch failed
     if (!comment) {
       console.log(`Fetching issue comment ${commentId}`);
       const { data: issueComment } = await octokit.rest.issues.getComment({