Tags: Priyanshu-byte-coder/devtrack

fix(ci): add cross-platform native binaries to lock file

Lock file was generated on Windows and only contained win32 binaries.
CI runs on Linux and needs linux-x64 binaries for:
- @parcel/watcher (file watching in next.config.mjs)
- esbuild (bundling)
- @swc/core (TypeScript/JSX compilation)
- sharp (image optimization)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

chore: add CI workflow, CHANGELOG, repo improvements

- GitHub Actions CI: lint + type-check on client and server for every PR/push
- CHANGELOG.md tracking v0.1.0 release
- CI badge in README
- Restore NEXT_PUBLIC_API_URL to client .env.example

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>