feat: add debug logging for unexpected empty responses from nginx proxy

Fix white screen: rewrite internal-host Location headers in proxy

Fix ERR_TOO_MANY_REDIRECTS: add trailingSlash:true + config-hash rebuild guard

fix: patch nginx to re-add /app prefix when proxying to Next.js

fix: write pg.log to /tmp — /postiz is root-owned, postgres user denied

fix: move next build to container startup — HF builder cgroup too small

fix: fresh clone + filtered pnpm install in frontend stage to cut peak RSS

fix: split frontend into isolated build stage to eliminate residual RSS

fix: restore 3072 MB heap for frontend — single-thread needs ~1.9 GB

fix: limit Next.js webpack workers to prevent OOMKilled on HF builder

Fix OOM build (exit 137) by disabling sourcemap generation

initialize project