f/misc updates

[chronon]

• Update README
• Update dependencies, fix test

[Copilot]

Pull Request Overview

This PR updates project dependencies to their latest patch/minor versions and corrects a test type definition. The main change is updating the development dependencies (SvelteKit, Vitest, Tailwind, etc.) to newer versions, while also fixing a type error in the test file and improving README documentation clarity.

Key changes:

• Fixed TypeScript type definition in test file (changed from vi.spyOn to vi.fn)
• Updated 11 development dependencies to latest versions (including major version bump for Vitest from v3 to v4)
• Enhanced README with clearer messaging about the "anti-social media" nature and improved documentation

Reviewed Changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/hooks.server.test.ts	Fixed type definitions for spy variables to use correct Vitest API
package.json	Updated development dependencies to latest versions
README.md	Improved introduction, clarified API endpoint paths, and reorganized admin authentication documentation

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported