demo: java-hotpatch polish, React Native crash demo, Slidev deck

[waltoss]

Summary

• java-hotpatch polish: iterative improvements on the existing demo (record script, asciinema cast, skills lockfile for reproducibility). PricingController.java kept with the bug — that's what the hotpatch demo teaches you to find.
• Slidev deck (demo/slides/) used at the Dev With AI meetup.
• GitHub Pages site deploy that preserves the current landing page and adds the slides under /slides/.

Current site preserved

What's currently deployed at https://theodo-group.github.io/debug-that/ is the landing page from docs/index.html (hero, install bar, demo gif, features, runtimes, commands, architecture). The legacy Pages config points at main:/docs.

This PR keeps the landing page unchanged and adds the slides under a subpath:

• / → existing landing (unchanged)
• /slides/ → Slidev deck
• Nav + footer in docs/index.html get a new "Slides" link

How it works

The workflow at .github/workflows/deploy-site.yml assembles one artifact:

_site/
├── index.html       ← from docs/
├── demo.gif, *.gif  ← from docs/
└── slides/          ← slidev build --base /debug-that/slides/

Both served from the same domain. Triggers: push to main under docs/** or demo/slides/**, plus workflow_dispatch.

⚠️ One-time setting change required

The current Pages source is "Branch: main / /docs" (legacy mode). This workflow needs "Source: GitHub Actions". Switch it once at:

Settings → Pages → Source: GitHub Actions

After that, this workflow owns every deploy. Without flipping the setting, the workflow runs but deploy-pages fails.

To verify after merge

1. Flip the Pages source setting above.
2. Merge this PR (or workflow_dispatch from the Actions tab before merging to preview).
3. Workflow runs → Deploy site to GitHub Pages job shows a page_url.
4. Landing: https://theodo-group.github.io/debug-that/ (unchanged, now has "Slides" nav link)
5. Slides: https://theodo-group.github.io/debug-that/slides/

Asset hosting

The Slidev deck references one 32 MB video (demo-java.mp4). Rather than bloat git history with binary media, it's uploaded to the demo-assets-v1 release and referenced by URL from slides.md. Smaller PNGs/SVGs/GIFs (~7 MB total) are committed directly — fine for git.

.gitignore additions

• demo/**/target/ — Maven build output
• demo/**/.agents/, demo/**/.claude/ — local Claude Code tool caches
• demo/slides/public/demo-java.mp4 — hosted on GH Releases instead

Test plan

• slides.md references the release asset URL
• demo-assets-v1 release exists with demo-java.mp4 attached
• Pages workflow assembles docs/ + built slides into one artifact
• Nav + footer in docs/index.html link to ./slides/
• PricingController.java kept buggy (demo intent)
• After merge + Pages source flip: landing unchanged, slides live at /slides/

🤖 Generated with Claude Code