Fix /docs base URL showing localhost on deployed instances

[flymia]

This fixes #92. Switch Scribe from static-HTML to its laravel type so the docs page renders at request time and its base URL resolves to the live APP_URL, instead of the build-time value baked into static files.

• config/scribe.php: type=laravel, base_url='{{ config("app.url") }}', add_routes=false, OpenAPI/Postman specs disabled; drop the obsolete class_exists(AuthIn) guard
• composer: move knuckleswtf/scribe from require-dev to require (runtime dependency); minimal lock change (9 packages moved dev->prod, no bumps)
• routes/web.php: serve /docs via Route::view('scribe.index'); remove the old /docs -> /docs/index.html redirect
• Dockerfile.prod: drop the vendor-dev/docs stages, generate in the runtime stage; generate against a sentinel base URL then inject the Blade expression so example snippets and "Try It Out" host are dynamic too
• nginx.conf: route /docs through PHP; simplify index directive
• gitignore new generated paths; untrack the stale committed view that had localhost baked in
• update dev docs compose service comment and CLAUDE.md