feat(FN-3311): add version notes extractor for GitHub releases

Merges FN-3311 work into the release pipeline: adds a version notes extractor with tests and integrates GitHub release creation into the release script, plus a minor CSS design token consistency fix in the dashboard.

Fusion-Task-Id: FN-3311

scripts/__tests__/extract-version-notes.test.mjs

@@ -0,0 +1,71 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { extractVersionNotes } from "../lib/extract-version-notes.mjs";
+
+const changelog = `# Fusion changelog
+
+## 1.2.0
+
+### @runfusion/fusion
+
+#### Patch Changes
+
+- Added release integration.
+
+## 1.1.0
+
+### @runfusion/fusion
+
+#### Patch Changes
+
+- Fixed parser bug.
+
+## 1.0.0
+
+### @runfusion/fusion
+
+#### Patch Changes
+
+- Initial release.
+`;
+
+test("extracts correct section for known version", () => {
+  const notes = extractVersionNotes(changelog, "1.1.0");
+  assert.match(notes, /Fixed parser bug\./);
+  assert.doesNotMatch(notes, /Added release integration\./);
+});
+
+test("returns full multiline body including sub-headings", () => {
+  const notes = extractVersionNotes(changelog, "1.2.0");
+  assert.match(notes, /^### @runfusion\/fusion/m);
+  assert.match(notes, /^#### Patch Changes/m);
+  assert.match(notes, /- Added release integration\./);
+});
+
+test("returns fallback when version not found", () => {
+  const notes = extractVersionNotes(changelog, "9.9.9");
+  assert.equal(notes, "Release v9.9.9");
+});
+
+test("returns fallback when changelog content is empty", () => {
+  const notes = extractVersionNotes("", "1.2.0");
+  assert.equal(notes, "Release v1.2.0");
+});
+
+test("handles version as last section with no trailing heading", () => {
+  const notes = extractVersionNotes(changelog, "1.0.0");
+  assert.match(notes, /Initial release\./);
+});
+
+test("handles single-version changelog", () => {
+  const single = `# Changelog\n\n## 2.0.0\n\n### pkg\n\n#### Patch Changes\n\n- Solo entry.\n`;
+  const notes = extractVersionNotes(single, "2.0.0");
+  assert.match(notes, /Solo entry\./);
+});
+
+test("does not bleed into adjacent version sections", () => {
+  const notes = extractVersionNotes(changelog, "1.1.0");
+  assert.doesNotMatch(notes, /Initial release\./);
+  assert.doesNotMatch(notes, /Added release integration\./);
+});

scripts/lib/extract-version-notes.mjs

@@ -0,0 +1,32 @@
+/**
+ * Extract the changelog section for a specific version from the root CHANGELOG.md content.
+ * @param {string} content - Full CHANGELOG.md content (as formatted by syncRootChangelog)
+ * @param {string} version - Bare version string (e.g. "0.16.0"), NOT "v"-prefixed
+ * @returns {string} Release notes body, or a fallback like "Release v{version}" if not found
+ */
+export function extractVersionNotes(content, version) {
+  const fallback = `Release v${version}`;
+
+  if (!content || !version) {
+    return fallback;
+  }
+
+  const lines = content.split(/\r?\n/);
+  const header = `## ${version}`;
+  const startIndex = lines.findIndex((line) => line.trim() === header);
+
+  if (startIndex === -1) {
+    return fallback;
+  }
+
+  let endIndex = lines.length;
+  for (let i = startIndex + 1; i < lines.length; i += 1) {
+    if (lines[i].startsWith("## ")) {
+      endIndex = i;
+      break;
+    }
+  }
+
+  const body = lines.slice(startIndex + 1, endIndex).join("\n").trim();
+  return body || fallback;
+}

scripts/release.mjs

@@ -22,6 +22,8 @@ import { tmpdir } from "node:os";
 import { createInterface } from "node:readline/promises";
 import { stdin, stdout } from "node:process";
 
+import { extractVersionNotes } from "./lib/extract-version-notes.mjs";
+
 const args = new Set(process.argv.slice(2));
 const DRY_RUN = args.has("--dry-run");
 const AUTO_YES = args.has("--yes") || args.has("-y");
@@ -523,4 +525,47 @@ info(`Creating and pushing tag v${version}…`);
 run(`git tag v${version}`);
 run(`git push origin v${version}`);
 
-ok(`Released v${version}. The 'v${version}' tag will trigger release.yml for binary builds.`);
+// --- GitHub Release ------------------------------------------------------
+
+let githubReleaseStatus = "not-created";
+const changelogContent = readFileSync("CHANGELOG.md", "utf8");
+const releaseNotes = extractVersionNotes(changelogContent, version);
+const ghCheck = spawnSync("gh", ["--version"], { stdio: "pipe" });
+
+if (ghCheck.status !== 0) {
+  githubReleaseStatus = "missing-gh";
+  warn(`⚠ gh CLI not found. Create the GitHub Release manually:\n  gh release create v${version} --title "v${version}" --latest`);
+} else {
+  let notesFile;
+  try {
+    const notesDir = mkdtempSync(join(tmpdir(), "fusion-release-notes-"));
+    notesFile = join(notesDir, `v${version}-notes.md`);
+    writeFileSync(notesFile, `${releaseNotes}\n`, "utf8");
+
+    const ghCreate = spawnSync(
+      "gh",
+      ["release", "create", `v${version}`, "--title", `v${version}`, "--notes-file", notesFile, "--latest"],
+      { stdio: "inherit" }
+    );
+
+    if (ghCreate.status !== 0) {
+      warn(`GitHub Release creation failed for v${version}. You can retry manually with gh release create.`);
+    } else {
+      githubReleaseStatus = "created";
+    }
+  } catch (error) {
+    warn(`GitHub Release creation failed for v${version}: ${error instanceof Error ? error.message : String(error)}`);
+  } finally {
+    if (notesFile && existsSync(notesFile)) {
+      unlinkSync(notesFile);
+    }
+  }
+}
+
+if (githubReleaseStatus === "created") {
+  ok(`Released v${version}. Published to npm, tag pushed, GitHub Release created.`);
+} else if (githubReleaseStatus === "missing-gh") {
+  ok(`Released v${version}. Published to npm, tag pushed. GitHub Release skipped (gh CLI not found).`);
+} else {
+  ok(`Released v${version}. Published to npm, tag pushed. GitHub Release was not created (see warnings above).`);
+}