Branch fix 404 nginx

[zachchong]

No description provided.

[Copilot]

Pull request overview

This PR attempts to fix nginx 404 handling for a Single Page Application (SPA) by reorganizing the proxy_intercept_errors directive and modifying the error_page configuration.

Key Changes:

• Moved proxy_intercept_errors on; from global scope into the location / block to scope error interception to frontend routes only
• Changed error_page 404 = /index.html; to error_page 404 /index.html; (removed the = operator)

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[Copilot]

Removing the = sign from the error_page directive changes the behavior in a potentially problematic way.

With error_page 404 = /index.html;, nginx returns a 200 OK status with the index.html content, which is correct for valid client-side routes.

With error_page 404 /index.html;, nginx returns a 404 status code while serving the index.html content, which is incorrect for legitimate SPA routes (e.g., /about, /profile). Browsers and search engines will see these as failed requests.

Consider reverting to error_page 404 = /index.html; to properly handle client-side routes.

Suggested change

	error_page 404 /index.html;
	error_page 404 = /index.html;