Seed values and shared mock options.
The config mock service.
const config = createMockConfigService();
config.handleMessage('w1', { type: 'config.registerSchema', id: 'r1', schema: MOCK_CONFIG_SCHEMA }, send);
config.handleMessage('w1', { type: 'config.get', id: 'g1' }, send);
// → { type: 'config.values', id: 'g1', values: { theme: 'dark', fontSize: 16, ... } }
Create the NAP-CONFIG mock. The shell is the sole writer: napplets register a schema and read;
commit()plays the settings UI.