chore: clean up repo structure and polish docs

- Rewrite .gitignore in English with proper patterns for build artifacts, storage files, and IDE files
- Remove tracked build assets (hash-based) and storage files from git
- Update LICENSE copyright to 2026 Remco (Epicnabbo)
- Fix clone URLs in README (remove placeholder gitea-server)
- Sync docs/INSTALL.md with README installation guide

resources/themes/atom/vite.config.js

@@ -15,6 +15,7 @@ export default defineConfig({
         path.resolve(__dirname, "js/app.js"),
         "resources/js/global.js",
         "resources/css/global.css",
+        "resources/js/ssr.jsx",
       ],
     }),
 

resources/themes/dusk/vite.config.js

@@ -15,6 +15,7 @@ export default defineConfig({
         path.resolve(__dirname, "js/app.js"),
         "resources/js/global.js",
         "resources/css/global.css",
+        "resources/js/ssr.jsx",
       ],
     }),