[bug] React hydration mismatch error #418 on project page

[realproject7]

Problem

Browser console shows React error #418 (hydration mismatch) when loading the project dashboard via SPA fallback. The server-rendered HTML from the static export template doesn't match what the client renders after hydration with the real project ID.

Error

Uncaught Error: Minified React error #418; visit
https://react.dev/errors/418?args[]=HTML&args[]= for the full message

Root cause

The static export pre-renders /project/_.html with placeholder data. When served via SPA fallback for /project/quadwork, the client hydrates with different content (real project ID via usePathname()), causing a mismatch.

Possible fixes

1. Suppress hydration warnings for the project page (use suppressHydrationWarning)
2. Don't pre-render the project page at all — make it fully client-side rendered
3. Use dynamic(() => import(...), { ssr: false }) for ProjectDashboard

Acceptance Criteria

• No React hydration errors in console
• Project page still loads correctly

Branch

task/102-hydration-fix