ci: Fix issue response script (#24891)

This PR fixes the issue response script.

There were a number of things preventing it from working:

- The directory name used in the GitHub Action did not match the one on
disk.
  - The script has been moved accordingly
- `ts-node` does not support ESM.
- `ts-node` seems unmaintained, so I changed the script to be plain JS
that is type-checked with TypeScript.
- The data being sent to the Slack API was invalid:
- Each section block can only have a maximum of 3000 characters in the
`text` field, so we need to break up the issue list across multiple
sections.
- We needed to escape `&`, `<`, and `>` characters in the issue titles.

Release Notes:

- N/A

script/issue_response/main.js

@@ -0,0 +1,99 @@
+import { Octokit } from "@octokit/rest";
+import { IncomingWebhook } from "@slack/webhook";
+
+/**
+ * The maximum length of the `text` in a section block.
+ *
+ * [Slack Docs](https://api.slack.com/reference/block-kit/blocks#section)
+ */
+const SECTION_BLOCK_TEXT_LIMIT = 3000;
+
+async function main() {
+  const octokit = new Octokit({ auth: process.env["GITHUB_TOKEN"] });
+
+  if (!process.env["SLACK_ISSUE_RESPONSE_WEBHOOK_URL"]) {
+    throw new Error("SLACK_ISSUE_RESPONSE_WEBHOOK_URL is not set");
+  }
+
+  const webhook = new IncomingWebhook(
+    process.env["SLACK_ISSUE_RESPONSE_WEBHOOK_URL"],
+  );
+
+  const owner = "zed-industries";
+  const repo = "zed";
+  const staff = await octokit.paginate(octokit.rest.orgs.listMembers, {
+    org: owner,
+    per_page: 100,
+  });
+  let staffHandles = staff.map((member) => member.login);
+  let commenterFilters = staffHandles.map((name) => `-commenter:${name}`);
+  let authorFilters = staffHandles.map((name) => `-author:${name}`);
+
+  const q = [
+    `repo:${owner}/${repo}`,
+    "is:issue",
+    "state:open",
+    "created:>=2025-02-01",
+    "sort:created-asc",
+    ...commenterFilters,
+    ...authorFilters,
+  ];
+
+  const response = await octokit.rest.search.issuesAndPullRequests({
+    q: q.join("+"),
+    per_page: 100,
+  });
+
+  let issues = response.data.items;
+  let issueLines = issues.map((issue, index) => {
+    const formattedDate = new Date(issue.created_at).toLocaleDateString(
+      "en-US",
+      {
+        year: "numeric",
+        month: "short",
+        day: "numeric",
+      },
+    );
+    const sanitizedTitle = issue.title
+      .replaceAll("&", "&")
+      .replaceAll("<", "&lt;")
+      .replaceAll(">", "&gt;");
+
+    return `${index + 1}. ${formattedDate}: <${issue.html_url}|${sanitizedTitle}>\n`;
+  });
+
+  const sections = [];
+  /** @type {string[]} */
+  let currentSection = [];
+  let currentSectionLength = 0;
+
+  for (const issueLine of issueLines) {
+    if (currentSectionLength + issueLine.length <= SECTION_BLOCK_TEXT_LIMIT) {
+      currentSection.push(issueLine);
+      currentSectionLength += issueLine.length;
+    } else {
+      sections.push(currentSection);
+      currentSection = [];
+      currentSectionLength = 0;
+    }
+  }
+
+  if (currentSection.length > 0) {
+    sections.push(currentSection);
+  }
+
+  const blocks = sections.map((section) => ({
+    type: "section",
+    text: {
+      type: "mrkdwn",
+      text: section.join("").trimEnd(),
+    },
+  }));
+
+  await webhook.send({ blocks });
+}
+
+main().catch((error) => {
+  console.error("An error occurred:", error);
+  process.exit(1);
+});