fix: GitHub stars and forks counter on landing page

[Axwaizee]

Description

Fixes an issue on the landing page where GitHub stars and GitHub forks count displayed as 0.

The landing page previously fetched stats from a third-party worker endpoint (api.github-star-counter.workers.dev), which returns { stars: 0, forks: 0 } and overwrote the landing page state with zeroes.

Solution

1. Official GitHub REST API: Updated fetchStats in src/pages/LandingPage.jsx to query GitHub's official repository endpoint (https://api.github.com/repos/drawdb-io/drawdb).
2. Response Validation: Added checks for stargazers_count and forks_count to ensure only valid numeric responses update the state.
3. Silent Error Handling: Handled network/rate-limit fetch errors silently without polluting the browser console.
4. Updated Fallback Defaults: Updated initial state defaults to { stars: 39000, forks: 3200 } so offline / rate-limited requests render realistic counts.
5. Formatter Improvements: Enhanced shortenNumber to handle numbers $\ge 1,000,000$ and non-number edge cases safely.

Quality & Style Check

• Code adheres to the project's style guide and formatting rules.
• Code passes ESLint without any warnings or errors (npm run lint).
• Codebase remains entirely in English.

[vercel]

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