feat(ci): add /claim command to auto-assign issues

.github/scripts/issue-claim.mjs

@@ -0,0 +1,59 @@
+#!/usr/bin/env node
+import { execFile } from "node:child_process";
+import { promisify } from "node:util";
+
+const execFileAsync = promisify(execFile);
+const issueNumber = process.env.ISSUE_NUMBER;
+const commentBody = process.env.COMMENT_BODY || "";
+const commentUser = process.env.COMMENT_USER || "";
+const commentUserType = process.env.COMMENT_USER_TYPE || "";
+
+// Only handle /claim as a standalone word
+if (!/(?:^|\s)\/claim(?:\s|$)/.test(commentBody)) {
+  process.exit(0);
+}
+
+// Don't let bots claim
+if (commentUserType === "Bot") {
+  console.log("Commenter is a bot, skipping");
+  process.exit(0);
+}
+
+console.log(`/claim from @${commentUser} on #${issueNumber}`);
+
+async function gh(args) {
+  const { stdout } = await execFileAsync("gh", args, { maxBuffer: 1024 * 1024 });
+  return stdout.trim();
+}
+
+async function ghJson(args) {
+  const out = await gh(args);
+  return JSON.parse(out);
+}
+
+// Check current assignees
+const assignees = await ghJson([
+  "issue", "view", issueNumber,
+  "--json", "assignees",
+  "-q", ".assignees",
+]);
+
+if (assignees.length > 0) {
+  const names = assignees.map((a) => `@${a.login}`).join(", ");
+  await gh([
+    "issue", "comment", issueNumber,
+    "--body", `❌ @${commentUser} 这个 issue 已经有人认领了：${names}`,
+  ]);
+  process.exit(0);
+}
+
+// Assign
+await gh(["issue", "edit", issueNumber, "--add-assignee", commentUser]);
+
+// Confirm
+await gh([
+  "issue", "comment", issueNumber,
+  "--body", `✅ @${commentUser} 已认领 #${issueNumber}，开始处理吧！`,
+]);
+
+console.log(`Assigned @${commentUser} to #${issueNumber}`);

.github/workflows/issue-claim.yml

@@ -0,0 +1,26 @@
+name: Issue Claim
+
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+  contents: read
+  issues: write
+
+jobs:
+  claim:
+    runs-on: ubuntu-latest
+    if: ${{ !github.event.issue.pull_request }}
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Handle /claim command
+        run: node .github/scripts/issue-claim.mjs
+        env:
+          ISSUE_NUMBER: ${{ github.event.issue.number }}
+          COMMENT_BODY: ${{ github.event.comment.body }}
+          COMMENT_USER: ${{ github.event.comment.user.login }}
+          COMMENT_USER_TYPE: ${{ github.event.comment.user.type }}