fec35a2333
src/ now contains only source code; tests live alongside it under
tests/. Bun's test runner discovers '**/*.test.ts' so no test-runner
config change is needed.
Changes:
- tests/config.test.ts (was src/config.test.ts)
- tests/configFile.test.ts (was src/configFile.test.ts)
- Imports updated: ./config.ts -> ../src/config.ts (likewise for
configFile.ts and errors.ts).
- tsconfig.json include adds 'tests/**/*.ts' so tsc type-checks
the test files too.
All 25 tests still pass; tsc clean.