OverKill Hill P³ Vite-to-GitHub-Pages deployment runbook. Use when deploying or troubleshooting this React/Vite app, its Actions workflow, /kierans-lifetrkr/ production base, HashRouter fallback, dist artifacts, build validation, or Pages environment variables. Also activate for subpath asset failures or SPA refresh diagnosis. Do not use for gh-pages branches, backend hosting, or unrelated UI work.
