feat: Introduce biome

[volnei]

What does this PR do?

---

Summary by cubic

Replaced ESLint and Prettier with Biome across the monorepo to unify linting and formatting, simplify config, and reduce tooling overhead.

• Refactors

  • Added biome.json at the repo root with formatter and file include/exclude rules.
  • Switched package.json scripts to use biome lint and biome format; updated lint:report to Biome’s reporter.
  • Removed ESLint/Prettier configs and the internal ESLint plugin packages.
  • Updated lint-staged to run Biome (supports SKIP_WARNINGS to allow warnings).
  • Build tools now format generated files with Biome (app-store CLI, UI icons).
  • Minor code tweaks for Biome compliance (type-only imports, strict equality, node: protocol imports, enum declaration).

• Dependencies

  • Added @biomejs/biome to the root and affected packages.
  • Removed ESLint, Prettier, and related plugins/configs across the repo.

^{Written for commit d89ed58. Summary will update automatically on new commits.}

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Project	Deployment	Preview	Comments	Updated (UTC)
cal-companion	Ready	Preview	Comment	Dec 6, 2025 11:52am

[volnei]

@cubic-dev-ai Please create a comprehensive list on what's changed by introducing biome and all important information for developers to compose a document to be shared with engineers