fix: powerbi url

[mishraomp]

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[Copilot]

Pull request overview

This pull request renames the runtime configuration endpoint from /config.js to /env.js to better reflect that it handles environment variables. The changes ensure that the environment configuration (including PowerBI URL) is properly injected into the built HTML and served by Caddy.

Changes:

• Added a custom Vite plugin to inject the /env.js script tag into the HTML head during build
• Renamed the Caddy endpoint from /config.js to /env.js with updated header syntax
• Updated the SPA router configuration to exclude /env.js from redirects
• Applied code formatting improvements (quote style consistency and trailing commas)

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
frontend/vite.config.js	Added build-html plugin to inject env.js script tag and updated formatting to use double quotes
frontend/Caddyfile	Renamed config endpoint from /config.js to /env.js and updated SPA router exclusions