chore(release): v3.0.0 — unified production release across EmbeddedOS-org

- Bump version to 3.0.0
- Refresh CHANGELOG, CITATION.cff, LICENSE/NOTICE
- Trigger release.yml -> per-platform binaries, mdBook, promo video

Author: EmbeddedOS Release Bot

.gitignore

@@ -3,3 +3,12 @@ tests/screenshots/
 playwright-report/
 test-results/
 lighthouse-results/
+build/
+build-*/
+dist/
+__pycache__/
+*.pyc
+.venv/
+target/
+.pytest_cache/
+.DS_Store

CHANGELOG.md

@@ -1,5 +1,17 @@
 # Changelog
 
+## [3.0.0] - 2026-05-13
+
+### Production Release — Unified EmbeddedOS-org v3.0.0
+
+This is the synchronized production release across all 18 EmbeddedOS-org repos.
+
+- Refreshed governance: LICENSE, NOTICE, CITATION.cff, SECURITY.md
+- CI/CD pipelines hardened: release.yml, book-build.yml, video-build.yml, deploy-pages.yml
+- Release artifacts produced for: Linux x64/arm64, macOS x64/arm64, Windows x64, Docker, plus per-repo embedded/mobile/extension targets
+- mdBook documentation built and deployed to GitHub Pages
+- Promo video rendered and attached as a release asset
+
 All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),

CITATION.cff

@@ -0,0 +1,10 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it using the metadata below."
+type: software
+title: "embeddedos-org.github.io"
+version: "3.0.0"
+date-released: "2026-05-13"
+authors:
+  - name: "EmbeddedOS Project Contributors"
+url: "https://github.com/embeddedos-org/embeddedos-org.github.io"
+license: MIT

package.json

@@ -1,6 +1,6 @@
 {
   "name": "embeddedos-website",
-  "version": "1.1.0",
+  "version": "3.0.0",
   "private": true,
   "description": "EmbeddedOS Developer Portal - Production website with comprehensive testing and CI/CD",
   "scripts": {