Migrate the 20 organization and working-capital specs from Karma to Vitest #407

Part of #403. Good first issue — 10 specs in each of two areas, all mechanical.

What to do

src/app/features/organization/ (10) and src/app/features/working-capital/ (10) still run on the deprecated Karma runner. One PR or two — say which you are taking in a comment.

node scripts/codemod-jasmine-to-vitest.mjs $(node -p "require('./karma-baseline.json').specs.filter(f=>/^src\/app\/features\/(organization|working-capital)\//.test(f)).join(' ')")
npm run test:unit
node scripts/check-test-runner.mjs --write
npm run lint:prune && npm run format
npm test -- --watch=false

All 20 convert cleanly — the codemod reports 0 left for a human for both areas.

Acceptance criteria

• No .spec.ts files remain under the area(s) you took
• npm run test:unit and npm test -- --watch=false both pass
• Karma total + Vitest total unchanged — quote both in the PR
• karma-baseline.json updated in the same commit
• npm run lint and npm run format:check clean

Things that trip people up

• Run npm run lint:prune after the rename — eslint-suppressions.json is keyed by path.
• Some working-capital specs were migrated already, so expect a mix of .test.ts and .spec.ts in that folder. Only the .spec.ts files are in scope; the baseline is the authority on which remain.
• Migrate as-is; open a separate issue for anything that looks wrong.

Background: DOCS/adr/0004-vitest-migration.md.