refactor: 按 sample_in_harmonyos 多层模块化架构重构工程结构

- 新增 common/ 公共模块：模型、服务、组件、常量
- 新增 features/ 功能模块：graph(星图)、chat(聊天)、settings(设置)、commonbusiness
- 新增 products/phone 产品入口层：EntryAbility + Index + MainPage
- Index.ets 简化为纯路由入口，TabNavigation 移至 MainPage 统一管理
- 更新 build-profile.json5 注册所有新模块
- 迁移原始 entry/ 代码到分层架构，保持功能完整

products/phone/build-profile.json5

@@ -0,0 +1,8 @@
+{
+  "apiType": "stageMode",
+  "targets": [
+    {
+      "name": "default"
+    }
+  ]
+}

products/phone/oh-package.json5

@@ -0,0 +1,14 @@
+{
+  "name": "@ohos/phone",
+  "version": "1.0.0",
+  "description": "TrulyMEM phone product entry",
+  "main": "Index.ets",
+  "author": "",
+  "license": "",
+  "dependencies": {
+    "@ohos/common": "file:../../common",
+    "@ohos/graph": "file:../../features/graph",
+    "@ohos/chat": "file:../../features/chat",
+    "@ohos/settings": "file:../../features/settings"
+  }
+}

products/phone/src/main/ets/entryability/EntryAbility.ets

@@ -0,0 +1,35 @@
+import UIAbility from '@ohos.app.ability.UIAbility';
+import window from '@ohos.window';
+
+export default class EntryAbility extends UIAbility {
+  onCreate(want, launchParam) {
+    console.info('EntryAbility onCreate');
+  }
+
+  onDestroy() {
+    console.info('EntryAbility onDestroy');
+  }
+
+  onWindowStageCreate(windowStage: window.WindowStage) {
+    console.info('EntryAbility onWindowStageCreate');
+    windowStage.loadContent('pages/Index', (err, data) => {
+      if (err.code) {
+        console.error('Failed to load the content. Cause: ' + JSON.stringify(err));
+        return;
+      }
+      console.info('Succeeded in loading the content. Data: ' + JSON.stringify(data));
+    });
+  }
+
+  onWindowStageDestroy() {
+    console.info('EntryAbility onWindowStageDestroy');
+  }
+
+  onForeground() {
+    console.info('EntryAbility onForeground');
+  }
+
+  onBackground() {
+    console.info('EntryAbility onBackground');
+  }
+}

products/phone/src/main/ets/pages/Index.ets

@@ -0,0 +1,125 @@
+import { GraphDatabase } from '@ohos/common';
+import { GraphPage } from '@ohos/graph';
+import { ChatPage } from '@ohos/chat';
+import { SettingsPage } from '@ohos/settings';
+import { ImmersiveTabNavigation } from '@ohos/common';
+import display from '@ohos.display';
+
+@Entry
+@Component
+struct Index {
+  @State currentIndex: number = 0;
+  private db: GraphDatabase = new GraphDatabase();
+  private displayCallback?: Callback<number>;
+
+  aboutToAppear() {
+    this.db.init(getContext(this));
+  }
+
+  aboutToDisappear() {
+    if (this.displayCallback) {
+      display.off('change', this.displayCallback);
+    }
+  }
+
+  @Builder
+  tabContentBuilder() {
+    Column() {
+      if (this.currentIndex === 0) {
+        MainPage({ db: this.db })
+      } else {
+        SettingsPage()
+      }
+    }
+    .width('100%')
+    .height('100%')
+  }
+
+  build() {
+    Stack() {
+      ImmersiveTabNavigation({
+        currentIndex: this.currentIndex,
+        onTabChange: (index: number): void => { this.currentIndex = index; },
+        contentBuilder: (): void => { this.tabContentBuilder(); }
+      })
+    }
+    .width('100%')
+    .height('100%')
+  }
+}
+
+@Component
+struct MainPage {
+  @Prop db: GraphDatabase;
+  @State isWide: boolean = false;
+
+  aboutToAppear() {
+    this.updateBreakpoint();
+    try {
+      display.on('change', () => {
+        this.updateBreakpoint();
+      });
+    } catch (e) {
+      console.error('display.on error: ' + JSON.stringify(e));
+    }
+  }
+
+  private updateBreakpoint(): void {
+    try {
+      const defaultWindow = display.getDefaultDisplaySync();
+      this.isWide = defaultWindow.width > 520;
+    } catch (e) {
+      console.error('updateBreakpoint error: ' + JSON.stringify(e));
+    }
+  }
+
+  build() {
+    if (this.isWide) {
+      Row() {
+        GraphPage({ db: this.db })
+          .layoutWeight(1)
+          .height('100%')
+          .clip(true)
+          .borderRadius(12)
+          .margin({ left: 4, right: 2 })
+
+        ChatPage({ db: this.db })
+          .width(380)
+          .height('100%')
+          .clip(true)
+          .borderRadius(12)
+          .margin({ left: 2, right: 4 })
+      }
+      .width('100%')
+      .height('100%')
+      .padding(4)
+      .backgroundColor('#1A1B2E')
+      .backgroundBlurStyle(BlurStyle.Regular)
+    } else {
+      Column() {
+        Stack() {
+          GraphPage({ db: this.db })
+        }
+        .height('55%')
+        .width('100%')
+        .clip(true)
+        .borderRadius(12)
+        .margin({ top: 2, left: 4, right: 4, bottom: 2 })
+
+        Stack() {
+          ChatPage({ db: this.db })
+        }
+        .height('45%')
+        .width('100%')
+        .clip(true)
+        .borderRadius(12)
+        .margin({ top: 2, left: 4, right: 4, bottom: 2 })
+      }
+      .width('100%')
+      .height('100%')
+      .padding(2)
+      .backgroundColor('#1A1B2E')
+      .backgroundBlurStyle(BlurStyle.Regular)
+    }
+  }
+}

products/phone/src/main/module.json5

@@ -0,0 +1,46 @@
+{
+  "module": {
+    "name": "phone",
+    "type": "entry",
+    "description": "TrulyMEM phone entry module",
+    "mainElement": "EntryAbility",
+    "deviceTypes": [
+      "phone",
+      "tablet",
+      "2in1"
+    ],
+    "deliveryWithInstall": true,
+    "installationFree": false,
+    "pages": "$profile:main_pages",
+    "abilities": [
+      {
+        "name": "EntryAbility",
+        "srcEntry": "./ets/entryability/EntryAbility.ets",
+        "description": "$string:EntryAbility_desc",
+        "icon": "$media:layered_image",
+        "label": "$string:EntryAbility_label",
+        "startWindowIcon": "$media:startIcon",
+        "startWindowBackground": "$color:start_window_background",
+        "exported": true,
+        "skills": [
+          {
+            "entities": [
+              "entity.system.home"
+            ],
+            "actions": [
+              "ohos.want.action.home"
+            ]
+          }
+        ]
+      }
+    ],
+    "requestPermissions": [
+      {
+        "name": "ohos.permission.INTERNET"
+      },
+      {
+        "name": "ohos.permission.GET_NETWORK_INFO"
+      }
+    ]
+  }
+}

products/phone/src/main/resources/base/profile/main_pages.json

@@ -0,0 +1,5 @@
+{
+  "src": [
+    "pages/Index"
+  ]
+}