Add Tailwind v4 @theme tokens for surfaces, accents, text, borders,
and status colors. Self-host Geist Sans/Mono variable fonts. Redesign
nav with backdrop blur and active states, home page with gradient hero.
Migrate all 50+ components from ad-hoc gray/blue Tailwind classes to
semantic theme tokens (surface-*, text-*, border-*, accent-*, status-*).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add missing tsconfig strictness flags (noUncheckedIndexedAccess,
exactOptionalPropertyTypes, noImplicitOverride,
noPropertyAccessFromIndexSignature) and fix all resulting type errors
- Replace ESLint/Prettier with oxlint 1.48.0 and oxfmt 0.33.0
- Pin all frontend and backend dependencies to exact versions
- Pin GitHub Actions to SHA hashes with persist-credentials: false
- Fix CI Python version mismatch (3.12 -> 3.14) and ruff target-version
- Add vitest 4.0.18 with jsdom environment for frontend testing
- Add ty 0.0.17 for Python type checking (non-blocking in CI)
- Add actionlint and zizmor CI job for workflow linting and security audit
- Add Dependabot config for npm, pip, and github-actions
- Update CLAUDE.md and pre-commit hooks to reflect new tooling
- Ignore Claude Code sandbox artifacts in gitignore
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
