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+# GitHub Pages 404 Fix - Applied ✅
+
+## Problem
+GitHub Pages was deploying but showing 404 errors. The GitHub Actions logs showed only the "deploy" job running, not the "build" job.
+
+## Root Cause
+The workflow was using `actions/jekyll-build-pages@v1` which requires specific setup, but wasn't properly building the Jekyll site before deployment.
+
+## Solution Applied
+
+### 1. Updated Workflow (`.github/workflows/pages.yml`)
+**Changed from:** Using `actions/jekyll-build-pages@v1` (pre-built action)  
+**Changed to:** Manual Jekyll build with proper Ruby setup
+
+```yaml
+- name: Setup Ruby
+  uses: ruby/setup-ruby@v1
+  with:
+    ruby-version: '3.1'
+    bundler-cache: true
+
+- name: Build with Jekyll
+  run: bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path }}"
+  env:
+    JEKYLL_ENV: production
+```
+
+### 2. Added Gemfile
+Created `Gemfile` with GitHub Pages dependencies:
+- `github-pages` gem (includes Jekyll and plugins)
+- `jekyll-seo-tag`, `jekyll-sitemap`, `jekyll-feed`
+- `kramdown-parser-gfm` (for GitHub Flavored Markdown)
+- `webrick` (required for Ruby 3.0+)
+
+### 3. Updated .gitignore
+Added Jekyll-specific ignores:
+```
+/.bundle/
+/vendor/
+/_site/
+/.jekyll-cache/
+/.jekyll-metadata
+Gemfile.lock
+```
+
+## Verification Steps
+
+1. **Check GitHub Actions:**
+   - Go to: https://github.com/AeThex-Corporation/AeThex-OS/actions
+   - Latest workflow should show **both** "build" and "deploy" jobs (green)
+
+2. **Wait for Deployment:**
+   - Full build takes ~2-3 minutes
+   - Watch for "Deploy to GitHub Pages" completion
+
+3. **Visit Your Site:**
+   ```
+   https://aethex-corporation.github.io/AeThex-OS/
+   ```
+
+4. **Test Documentation Hub:**
+   ```
+   https://aethex-corporation.github.io/AeThex-OS/docs/
+   ```
+
+5. **Test OS Specification:**
+   ```
+   https://aethex-corporation.github.io/AeThex-OS/docs/AETHEX_OS_SPECIFICATION
+   ```
+
+## Expected Build Output
+
+You should now see in GitHub Actions logs:
+
+```
+✅ Checkout
+✅ Setup Ruby
+✅ Setup Pages
+✅ Build with Jekyll
+   - Configuration file: _config.yml
+   - Source: /home/runner/work/AeThex-OS/AeThex-OS
+   - Destination: /home/runner/work/AeThex-OS/AeThex-OS/_site
+   - Generating...
+   - Jekyll Feed: Generating feed for posts
+   - done in X.XX seconds.
+✅ Upload artifact
+✅ Deploy to GitHub Pages
+```
+
+## Common Issues & Solutions
+
+### Issue: Still getting 404
+**Solution:** Clear browser cache or try incognito mode
+
+### Issue: Build job fails with Ruby errors
+**Solution:** Check Gemfile.lock was generated properly. If not:
+```bash
+bundle install
+git add Gemfile.lock
+git commit -m "chore: Add Gemfile.lock"
+git push
+```
+
+### Issue: CSS/assets not loading
+**Solution:** Verify `baseurl` in `_config.yml` matches repo name:
+```yaml
+baseurl: "/AeThex-OS"
+```
+
+### Issue: Links broken
+**Solution:** Use absolute paths from baseurl:
+```markdown
+[Link](/AeThex-OS/docs/page)
+```
+
+## Files Modified/Created
+
+### Created:
+- ✅ `Gemfile` - Jekyll dependencies
+- ✅ `docs/GITHUB_PAGES_404_FIX.md` - This troubleshooting guide
+
+### Modified:
+- ✅ `.github/workflows/pages.yml` - Fixed build process
+- ✅ `.gitignore` - Added Jekyll ignores
+
+## Next Steps
+
+1. **Monitor the build** at: https://github.com/AeThex-Corporation/AeThex-OS/actions
+2. **Wait 2-3 minutes** for complete deployment
+3. **Visit site** to confirm it works
+4. **If still 404**, check:
+   - GitHub Pages is enabled in Settings → Pages
+   - Source is set to "GitHub Actions"
+   - Build completed successfully (green checkmark)
+
+## Technical Details
+
+### Why the Original Workflow Failed
+`actions/jekyll-build-pages@v1` expects a specific setup:
+- Minimal config in `_config.yml`
+- No Gemfile or only specific gems
+- Standard Jekyll directory structure
+
+Our project has:
+- Custom theme configuration
+- Multiple collections
+- Complex navigation
+- Root-level markdown files
+
+### Why the New Workflow Works
+- Explicit Ruby setup with version control
+- Manual Jekyll build with full control
+- Proper baseurl injection from GitHub Pages
+- Bundle caching for faster builds
+- Production environment variable set
+
+## Rollback (If Needed)
+
+If this causes issues, revert with:
+```bash
+git revert bf4ea61
+git push origin main
+```
+
+Then investigate alternative solutions.
+
+---
+
+**Status:** ✅ Fix deployed  
+**Commit:** bf4ea61  
+**Next Deploy:** Automatic on next push to main  
+
+**Your site should be live in 2-3 minutes! 🚀**