refactor: 工程标准化 — 组件提取、废弃API清理、console清零

- ChatPage/GraphPage/SettingsPage 拆分为独立子组件
- MainPage 接入 ImmersiveTabNavigation 玻璃拟态导航
- EntryAbility console.* 全替换为 defaultLogger
- SplashPage replaceUrl 废弃 API 迁移到 UIContext Router
- common/Index.ets 双通道导出 Logger/defaultLogger
- 删除 dead code (entry/, commonbusiness/, trulymem-core/)
- 全工程 0 console.*，BUILD SUCCESSFUL

features/graph/hvigorfile.ts

@@ -0,0 +1,6 @@
+import { harTasks } from '@ohos/hvigor-ohos-plugin';
+
+export default {
+    system: harTasks,
+    plugins: []
+};