* chore: npm audit
- Bumped versions for several packages: `@hono/node-server` to 1.19.10, `@tootallnate/once` to 3.0.1, `hono` to 4.12.5, `serialize-javascript` to 7.0.4, and `svgo` to 2.8.2.
- Removed deprecated `@trysound/sax` package from package-lock.json.
- Updated integrity hashes and resolved URLs in package-lock.json to reflect the new versions.
* chore: update dependencies and package versions
- Bumped `jest-environment-jsdom` to version 30.2.0 in both package.json and client/package.json.
- Updated related Jest packages to version 30.2.0 in package-lock.json, ensuring compatibility with the latest features and fixes.
- Added `svgo` package with version 2.8.2 to package.json for improved SVG optimization.
* chore: add @happy-dom/jest-environment and update test files
- Added `@happy-dom/jest-environment` version 20.8.3 to `package.json` and `package-lock.json` for improved testing environment.
- Updated test files to utilize the new Jest environment, replacing mock implementations of `window.location` with `window.history.replaceState` for better clarity and maintainability.
- Refactored tests in `SourcesErrorBoundary`, `useFocusChatEffect`, `AuthContext`, and `StartupLayout` to enhance reliability and reduce complexity.