chore(deps): bump app npm dependencies

[ibrahemid]

Replaces #124 with a locally verified bump of the root app dependencies. Nothing under site/ changes.

Majors: typescript 5.7 -> 7.0.2, vite 6.1 -> 8.2.1, jsdom 29 -> 30.0.1, @types/node 25 -> 26.2.0. Everything else moves to the latest compatible version, including @tauri-apps/cli 2.3.1 -> 2.11.4, which puts the npm CLI back in the same 2.11 family as the tauri crate.

Three things the majors needed:

• TypeScript 7 no longer auto-includes node_modules/@types under bundler resolution, so node:fs, node:path and process stopped resolving across src/__tests__/. tsconfig.json now lists node in types, which restores the program shape the auto-include gave it. All test files import their vitest symbols explicitly, so nothing else needed adding.
• Vite 8 defaults build.target to a browser baseline (safari16.4) newer than the macOS 12 webview the app declares in tauri.conf.json. vite.config.ts pins the target to the set Vite 6 emitted, so the shipped bundle keeps its current syntax floor.
• jsdom 30 requires node ^22.22.2 || ^24.15.0 || >=26. engines.node and the README build prerequisite follow it. CI already runs node 22.

THIRD-PARTY-NOTICES.md is regenerated for the changed npm versions; the Rust section is untouched.

Gates on node 22.23.2: tsc --noEmit clean, 1412 frontend tests in 141 files pass, pnpm build clean, cargo fmt --all --check clean, 1026 Rust tests pass, cargo clippy --workspace --all-targets -- -D warnings clean.