feat: re-trigger tester when human comments on a PR

PR comments fire as issue_comment webhooks in Gitea. Previously the
handler only re-triggered the analyst for regular issues. Now it
detects PR comments via the pull_request field and queues a test
workspace using the review bot account.

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

src/handlers/issue-comment.ts

@@ -4,7 +4,9 @@ import type { TaskQueue } from "../queue.js";
 import type { Config } from "../config.js";
 
 /**
- * Issue comment created or edited → re-trigger analyst if still in analysis.
+ * Issue comment created or edited:
+ * - On a PR → re-trigger tester
+ * - On an issue still in analysis → re-trigger analyst
  *
  * Replaces: issue-comment-reply.json
  */
@@ -23,6 +25,29 @@ export function issueComment(config: Config, queue: TaskQueue) {
       return c.text("ignored: bot comment", 200);
     }
 
+    const [org, repo] = event.repository.full_name.split("/");
+    const isPullRequest = !!event.issue.pull_request;
+
+    if (isPullRequest) {
+      // Comment on a PR → re-trigger tester
+      const task: TaskRequest = {
+        taskType: "test",
+        issueNumber: event.issue.number,
+        giteaOrg: org,
+        giteaRepo: repo,
+        repoCloneUrl: event.repository.clone_url,
+        giteaToken: config.giteaReviewToken,
+      };
+
+      const queued = await queue.enqueue(task, {
+        useReviewAccount: true,
+        body: "🤖 Re-triggering **test** — workspace queued.",
+      });
+
+      return c.json({ ok: true, queued });
+    }
+
+    // Regular issue comment → re-trigger analyst if still in analysis
     const labels = event.issue.labels.map((l) => l.name);
     const pastAnalysis =
       labels.includes("ready-for-architecture") ||
@@ -32,8 +57,6 @@ export function issueComment(config: Config, queue: TaskQueue) {
       return c.text("ignored: issue past analysis stage", 200);
     }
 
-    const [org, repo] = event.repository.full_name.split("/");
-
     const task: TaskRequest = {
       taskType: "analyse",
       issueNumber: event.issue.number,

src/types.ts

@@ -30,6 +30,7 @@ export interface GiteaIssue {
   state: string;
   user: GiteaUser;
   labels: GiteaLabel[];
+  pull_request?: { merged: boolean } | null;
 }
 
 export interface GiteaPullRequest {