test: cut low-value tests, rewrite the rest around behavior, parallelize lanes (#285)

src/main/runtime/config-hot-reload-handlers.test.ts

@@ -3,7 +3,6 @@ import assert from 'node:assert/strict';
 import { DEFAULT_CONFIG, deepCloneConfig } from '../../config';
 import {
   buildConfigHotReloadPayload,
-  buildRestartRequiredConfigMessage,
   createConfigHotReloadAppliedHandler,
   createConfigHotReloadMessageHandler,
 } from './config-hot-reload-handlers';
@@ -329,10 +328,3 @@ test('createConfigHotReloadMessageHandler routes message through configured noti
     'notify:SubMiner:Config reload failed',
   ]);
 });
-
-test('buildRestartRequiredConfigMessage formats changed fields', () => {
-  assert.equal(
-    buildRestartRequiredConfigMessage(['websocket', 'subtitleStyle']),
-    'Config updated; restart required for: websocket, subtitleStyle',
-  );
-});