fix(triage): support level-2 issue headings

.github/scripts/issue-triage-lib.ts

@@ -27,7 +27,7 @@ import { buildMaintainerHandoffBrief } from "./issue-handoff-brief.ts";
 export function parseIssueBody(body: string | null): ParsedIssueBody {
   const sections: Record<string, string> = {};
   const rawBody = body ?? "";
-  const headingMatches = [...rawBody.matchAll(/^###\s+(.+)$/gm)];
+  const headingMatches = [...rawBody.matchAll(/^#{2,3}\s+(.+)$/gm)];
 
   for (let index = 0; index < headingMatches.length; index += 1) {
     const current = headingMatches[index];

.github/scripts/issue-triage-lib_test.ts

@@ -0,0 +1,67 @@
+import type { GitHubIssue } from "./github.ts";
+import { analyzeIssue, parseIssueBody } from "./issue-triage-lib.ts";
+
+function assertEquals(actual: unknown, expected: unknown) {
+  const actualJson = JSON.stringify(actual);
+  const expectedJson = JSON.stringify(expected);
+
+  if (actualJson !== expectedJson) {
+    throw new Error(`Expected ${expectedJson}, received ${actualJson}`);
+  }
+}
+
+function featureIssue(body: string): GitHubIssue {
+  return {
+    number: 1,
+    title: "[Feature] Improve issue triage",
+    body,
+    state: "open",
+    labels: [{ name: "enhancement" }],
+    comments: 0,
+    created_at: "2026-10-01T00:00:00Z",
+    updated_at: "2026-10-01T00:00:00Z",
+    user: { login: "contributor" },
+    html_url: "https://github.com/iflytek/skillhub/issues/1",
+  };
+}
+
+Deno.test("level-2 headings satisfy required feature sections", () => {
+  const result = analyzeIssue(
+    featureIssue(`## Problem
+Filled issues are marked as incomplete.
+
+## Proposed solution
+Recognize level-2 headings during triage.`),
+    [],
+    new Date("2026-10-01T00:00:00Z"),
+  );
+
+  assertEquals(result.missingFields, []);
+  assertEquals(result.route === "needs-info", false);
+});
+
+Deno.test("level-3 Issue Form headings keep their existing behavior", () => {
+  const parsed = parseIssueBody(`### Problem
+Filled issues are marked as incomplete.
+
+### Proposed Solution
+Recognize headings generated by Issue Forms.`);
+
+  assertEquals(parsed.sections, {
+    problem: "Filled issues are marked as incomplete.",
+    "proposed solution": "Recognize headings generated by Issue Forms.",
+  });
+});
+
+Deno.test("mixed level-2 and level-3 headings are parsed together", () => {
+  const parsed = parseIssueBody(`## Problem
+Filled issues are marked as incomplete.
+
+### Proposed Solution
+Recognize both supported heading levels.`);
+
+  assertEquals(parsed.sections, {
+    problem: "Filled issues are marked as incomplete.",
+    "proposed solution": "Recognize both supported heading levels.",
+  });
+});