fix: stop configure-pages from overriding next.config.ts

actions/configure-pages@v5 with static_site_generator: next creates a
next.config.js (CommonJS) in the repo root at build time. Because next.config.js
takes precedence over next.config.ts, the injected config (without trailingSlash)
was used instead of ours — causing all pages to output as flat /page.html files
instead of /page/index.html.

With trailingSlash: true not active, all internal nav links (/downloads/,
/features/, /about/, etc.) returned 404 on GitHub Pages.

Removing static_site_generator: next from configure-pages stops the injection.
Our next.config.ts already has output: 'export', trailingSlash: true, and
images: { unoptimized: true } — nothing from configure-pages was needed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: JoeMatt

.github/workflows/deploy.yml

@@ -29,8 +29,6 @@ jobs:
 
       - name: Setup Pages
         uses: actions/configure-pages@v5
-        with:
-          static_site_generator: next
 
       - name: Install dependencies
         run: npm ci