Update site and base URL for GitHub Pages

[mvkaran]

This pull request updates the deployment configuration for the Astro project, specifically adjusting the production site URL and base path for GitHub Pages deployment.

[Copilot]

Pull Request Overview

This PR updates the Astro configuration to support deployment to a custom domain (https://octocanvas.io) at the root path (/) instead of the previous GitHub Pages deployment at https://githubuniverse.github.io/octocanvas.

Key Changes:

• Updates default site URL from GitHub Pages subdomain to custom domain
• Changes base path from /octocanvas to / for root-level deployment

[Copilot]

The change from GitHub Pages deployment (/octocanvas base path) to custom domain deployment (/ base path) creates an inconsistency with the GitHub Actions workflow.

The workflow in .github/workflows/deploy.yml sets environment variables during build:

env:
  SITE: ${{ github.event.repository.owner.html_url }}
  BASE_URL: /${{ github.event.repository.name }}

This means when deploying via GitHub Actions, BASE_URL will be set to /octocanvas (the repository name), which will override the new default value of / specified in this configuration. This could cause the application to work locally but fail when deployed via the workflow.

Recommendation: If moving to a custom domain at root path, either:

1. Update the GitHub Actions workflow to set BASE_URL: / for custom domain deployments, or
2. Remove the environment variables from the workflow to use the config defaults

See below for a potential fix:

import tailwind from '@astrojs/tailwind';
import preact from '@astrojs/preact';

// Load environment variables
// const { SITE, BASE_URL } = loadEnv(process.env.NODE_ENV || 'development', process.cwd(), "");

// https://astro.build/config
export default defineConfig({
  // Configure for static site generation
  output: 'static',

  // Custom domain deployment configuration
  site: 'https://octocanvas.io',
  base: '/',