chore: update NPM dependencies

[rthewhite]

Summary

Updates all NPM dependencies in this repo to their latest versions using npm-check-updates.

Updated packages (/package.json)

Package	Old version	New version
@tailwindcss/vite	^4.3.1	^4.3.3
@types/react	^18.3.3	^19.2.17
@types/react-dom	^18.3.0	^19.2.3
@types/w3c-web-serial	^1.0.6	^1.0.8
@vitejs/plugin-react	^6.0.2	^6.0.4
prettier	^3.3.3	^3.9.6
react	^18.3.1	^19.2.8
react-dom	^18.3.1	^19.2.8
react-konva	^18.2.16	^19.2.5
tailwindcss	^4.3.1	^4.3.3
tsx	^4.22.4	^4.23.1
typescript	^5.5.4	^7.0.2
vite	^8.0.16	^8.1.5
vitest	^4.1.9	^4.1.10
ws	^8.21.0	^8.21.1

MAJOR version bumps (potentially breaking)

• react: 18 → 19
• react-dom: 18 → 19
• react-konva: 18 → 19
• @types/react: 18 → 19
• @types/react-dom: 18 → 19
• typescript: 5 → 7

Verification

• npm run build: FAILED — tsc --noEmit errors with src/main.tsx(4,8): error TS2882: Cannot find module or type declarations for side-effect import of './index.css'. This is caused by the TypeScript 5 → 7 major bump (TS7 requires type declarations for side-effect imports like CSS files). Needs a follow-up fix (e.g. a *.css module declaration or tsconfig adjustment).
• npm test (vitest): PASSED — 7 test files, 53/53 tests passed.

🤖 Generated with Claude Code

[rthewhite]

Closing: switching to a security-only dependency update approach (npm audit fixes only).