Resolves CI failures where Node.js 24 caused ReferenceError: window is not defined
in non-dashboard tests that shared setupFiles with dashboard tests.
Follows the same pattern already used by fusion-plugin-roadmap: split into two
vitest projects with proper environment isolation:
- reports-dashboard: jsdom, includes src/dashboard/** tests + dashboard test-setup.ts
- reports-node: node, includes all other tests, excludes dashboard tests
No test changes — same 104 tests, same pass/fail state.
6fe7d6909c