Phase 1 complete. build Ok, apk OK

Signed-off-by: chaoq <chaoq@gxtech.ltd>

app/build.gradle

@@ -1,6 +1,8 @@
 plugins {
     id 'com.android.application'
     id 'org.jetbrains.kotlin.android'
+    id 'kotlin-kapt'
+    id 'dagger.hilt.android.plugin'
 }
 
 android {
@@ -32,6 +34,10 @@ android {
     }
     kotlinOptions {
         jvmTarget = '17'
+        freeCompilerArgs += [
+            "-opt-in=kotlin.RequiresOptIn",
+            "-Xjvm-default=all"
+        ]
     }
     buildFeatures {
         compose true
@@ -47,6 +53,7 @@ android {
 }
 
 dependencies {
+    // Core
     implementation 'androidx.core:core-ktx:1.13.1'
     implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.8.4'
     implementation 'androidx.activity:activity-compose:1.9.1'
@@ -58,6 +65,32 @@ dependencies {
     implementation 'androidx.lifecycle:lifecycle-viewmodel-compose:2.8.4'
     implementation 'androidx.navigation:navigation-compose:2.7.7'
 
+    // Network
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
+    implementation 'com.squareup.okhttp3:okhttp:4.12.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:4.12.0'
+
+    // DI
+    implementation 'com.google.dagger:hilt-android:2.48'
+    kapt 'com.google.dagger:hilt-compiler:2.48'
+    implementation 'androidx.hilt:hilt-navigation-compose:1.1.0'
+
+    // Database
+    implementation 'androidx.room:room-runtime:2.6.1'
+    implementation 'androidx.room:room-ktx:2.6.1'
+    kapt 'androidx.room:room-compiler:2.6.1'
+
+    // LiveKit (TODO: 需要确认GXRTC服务器集成方式)
+    // implementation 'io.livekit:livekit-android:2.20.2'
+
+    // ARCore
+    implementation 'com.google.ar:core:1.50.0'
+
+    // MQTT (TODO: 需要确认具体MQTT客户端库)
+    // implementation 'org.eclipse.paho:org.eclipse.paho.client.mqttv3:1.2.5'
+    // implementation 'org.eclipse.paho:org.eclipse.paho.android.service:1.1.1'
+
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'

app/src/main/java/com/xsynergy/android/XSynergyApplication.kt

@@ -1,12 +1,14 @@
 package com.xsynergy.android
 
 import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
 import com.xsynergy.android.utils.PerformanceOptimizer
 
 /**
  * XSynergy Application class for app-wide initialization
  * Optimizes app startup and performance monitoring
  */
+@HiltAndroidApp
 class XSynergyApplication : Application() {
 
     override fun onCreate() {

app/src/main/java/com/xsynergy/android/data/local/AppDatabase.kt

@@ -0,0 +1,13 @@
+package com.xsynergy.android.data.local
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+
+@Database(
+    entities = [UserEntity::class],
+    version = 1,
+    exportSchema = false
+)
+abstract class AppDatabase : RoomDatabase() {
+    abstract fun userDao(): UserDao
+}

app/src/main/java/com/xsynergy/android/data/local/UserDao.kt

@@ -0,0 +1,21 @@
+package com.xsynergy.android.data.local
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+
+@Dao
+interface UserDao {
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun insertUser(user: UserEntity)
+
+    @Query("SELECT * FROM users WHERE id = :userId")
+    suspend fun getUserById(userId: String): UserEntity?
+
+    @Query("SELECT * FROM users ORDER BY lastLoginTime DESC LIMIT 1")
+    suspend fun getLastLoggedInUser(): UserEntity?
+
+    @Query("DELETE FROM users")
+    suspend fun clearAllUsers()
+}

app/src/main/java/com/xsynergy/android/data/local/UserEntity.kt

@@ -0,0 +1,33 @@
+package com.xsynergy.android.data.local
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import com.xsynergy.android.data.model.User
+
+@Entity(tableName = "users")
+data class UserEntity(
+    @PrimaryKey val id: String,
+    val phone: String,
+    val name: String,
+    val token: String,
+    val avatarUrl: String?,
+    val lastLoginTime: Long = System.currentTimeMillis()
+)
+
+fun User.toEntity(): UserEntity = UserEntity(
+    id = id,
+    phone = phone,
+    name = name,
+    token = token,
+    avatarUrl = avatarUrl,
+    lastLoginTime = lastLoginTime
+)
+
+fun UserEntity.toDomain(): User = User(
+    id = id,
+    phone = phone,
+    name = name,
+    token = token,
+    avatarUrl = avatarUrl,
+    lastLoginTime = lastLoginTime
+)

app/src/main/java/com/xsynergy/android/data/model/LoginRequest.kt

@@ -0,0 +1,6 @@
+package com.xsynergy.android.data.model
+
+data class LoginRequest(
+    val phone: String,
+    val code: String
+)

app/src/main/java/com/xsynergy/android/data/model/LoginResponse.kt

@@ -0,0 +1,36 @@
+package com.xsynergy.android.data.model
+
+data class LoginResponse(
+    val success: Boolean,
+    val user: User?,
+    val token: String?,
+    val message: String?
+)
+
+data class GxrtcResponse<T>(
+    val meta: Meta,
+    val data: T
+)
+
+data class Meta(
+    val code: Int,
+    val message: String? = null
+)
+
+data class AccessTokenResponse(
+    val accessToken: String
+)
+
+data class RoomResponse(
+    val sid: String,
+    val name: String,
+    val emptyTimeout: Int,
+    val departureTimeout: Int,
+    val creationTime: Long,
+    val turnPassword: String,
+    val enabledCodecs: List<CodecInfo>
+)
+
+data class CodecInfo(
+    val mime: String
+)

app/src/main/java/com/xsynergy/android/data/model/User.kt

@@ -0,0 +1,10 @@
+package com.xsynergy.android.data.model
+
+data class User(
+    val id: String,
+    val phone: String,
+    val name: String,
+    val token: String,
+    val avatarUrl: String? = null,
+    val lastLoginTime: Long = System.currentTimeMillis()
+)

app/src/main/java/com/xsynergy/android/data/remote/GxrtcApi.kt

@@ -0,0 +1,26 @@
+package com.xsynergy.android.data.remote
+
+import com.xsynergy.android.data.model.AccessTokenResponse
+import com.xsynergy.android.data.model.GxrtcResponse
+import com.xsynergy.android.data.model.RoomResponse
+import retrofit2.Response
+import retrofit2.http.Field
+import retrofit2.http.FormUrlEncoded
+import retrofit2.http.GET
+import retrofit2.http.POST
+
+interface GxrtcApi {
+    @POST("room/token")
+    @FormUrlEncoded
+    suspend fun getAccessToken(
+        @Field("uid") userId: String,
+        @Field("room") roomId: String
+    ): Response<GxrtcResponse<AccessTokenResponse>>
+
+    @POST("room/")
+    @FormUrlEncoded
+    suspend fun createRoom(@Field("room") roomName: String): Response<GxrtcResponse<RoomResponse>>
+
+    @GET("room/")
+    suspend fun getRooms(): Response<GxrtcResponse<List<RoomResponse>>>
+}

app/src/main/java/com/xsynergy/android/data/remote/RetrofitClient.kt

@@ -0,0 +1,48 @@
+package com.xsynergy.android.data.remote
+
+import com.google.gson.GsonBuilder
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import java.util.concurrent.TimeUnit
+import javax.inject.Singleton
+
+object RetrofitClient {
+
+    private const val BASE_URL = "https://meeting.cnsdt.com/api/v1/"
+
+    fun provideOkHttpClient(): OkHttpClient {
+        return OkHttpClient.Builder()
+            .connectTimeout(30, TimeUnit.SECONDS)
+            .readTimeout(30, TimeUnit.SECONDS)
+            .writeTimeout(30, TimeUnit.SECONDS)
+            .addInterceptor { chain ->
+                val request = chain.request().newBuilder()
+                    .addHeader("Content-Type", "application/json")
+                    .addHeader("Accept", "application/json")
+                    .build()
+                chain.proceed(request)
+            }
+            .addInterceptor(
+                HttpLoggingInterceptor().apply {
+                    level = HttpLoggingInterceptor.Level.BODY
+                }
+            )
+            .build()
+    }
+
+    fun provideRetrofit(okHttpClient: OkHttpClient): Retrofit {
+        val gson = GsonBuilder()
+            .setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'")
+            .create()
+
+        return Retrofit.Builder()
+            .baseUrl(BASE_URL)
+            .client(okHttpClient)
+            .addConverterFactory(GsonConverterFactory.create(gson))
+            .build()
+    }
+
+    fun provideGxrtcApi(retrofit: Retrofit): GxrtcApi = retrofit.create(GxrtcApi::class.java)
+}

app/src/main/java/com/xsynergy/android/data/repository/AuthRepository.kt

@@ -0,0 +1,79 @@
+package com.xsynergy.android.data.repository
+
+import android.content.Context
+import android.content.SharedPreferences
+import com.xsynergy.android.data.local.UserDao
+import com.xsynergy.android.data.local.UserEntity
+import com.xsynergy.android.data.remote.GxrtcApi
+import com.xsynergy.android.data.model.LoginRequest
+import com.xsynergy.android.data.model.User
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class AuthRepository @Inject constructor(
+    private val gxrtcApi: GxrtcApi,
+    private val userDao: UserDao,
+    private val prefs: SharedPreferences
+) {
+
+    suspend fun getAccessToken(userId: String, roomId: String): Result<String> {
+        return try {
+            val response = gxrtcApi.getAccessToken(userId, roomId)
+            if (response.isSuccessful && response.body()?.meta?.code == 200) {
+                Result.success(response.body()!!.data.accessToken)
+            } else {
+                Result.failure(Exception("获取access token失败: ${response.body()?.meta?.message}"))
+            }
+        } catch (e: Exception) {
+            Result.failure(Exception("网络请求失败: ${e.message}"))
+        }
+    }
+
+    suspend fun createRoom(roomName: String): Result<String> {
+        return try {
+            val response = gxrtcApi.createRoom(roomName)
+            if (response.isSuccessful && response.body()?.meta?.code == 200) {
+                Result.success(response.body()!!.data.sid)
+            } else {
+                Result.failure(Exception("创建房间失败: ${response.body()?.meta?.message}"))
+            }
+        } catch (e: Exception) {
+            Result.failure(Exception("网络请求失败: ${e.message}"))
+        }
+    }
+
+    suspend fun getCurrentUser(): User? {
+        val userEntity = userDao.getLastLoggedInUser()
+        return userEntity?.let {
+            User(
+                id = it.id,
+                phone = it.phone,
+                name = it.name,
+                token = it.token,
+                avatarUrl = it.avatarUrl,
+                lastLoginTime = it.lastLoginTime
+            )
+        }
+    }
+
+    suspend fun saveUser(user: User) {
+        val userEntity = UserEntity(
+            id = user.id,
+            phone = user.phone,
+            name = user.name,
+            token = user.token,
+            avatarUrl = user.avatarUrl,
+            lastLoginTime = user.lastLoginTime
+        )
+        userDao.insertUser(userEntity)
+        prefs.edit().putString("auth_token", user.token).apply()
+    }
+
+    suspend fun logout() {
+        prefs.edit().remove("auth_token").apply()
+        userDao.clearAllUsers()
+    }
+
+    fun getAuthToken(): String? = prefs.getString("auth_token", null)
+}

app/src/main/java/com/xsynergy/android/di/NetworkModule.kt

@@ -0,0 +1,68 @@
+package com.xsynergy.android.di
+
+import android.content.Context
+import android.content.SharedPreferences
+import androidx.room.Room
+import com.xsynergy.android.data.local.AppDatabase
+import com.xsynergy.android.data.remote.GxrtcApi
+import com.xsynergy.android.data.remote.RetrofitClient
+import com.xsynergy.android.data.repository.AuthRepository
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object NetworkModule {
+
+    @Provides
+    @Singleton
+    fun provideOkHttpClient(): okhttp3.OkHttpClient {
+        return RetrofitClient.provideOkHttpClient()
+    }
+
+    @Provides
+    @Singleton
+    fun provideRetrofit(okHttpClient: okhttp3.OkHttpClient): retrofit2.Retrofit {
+        return RetrofitClient.provideRetrofit(okHttpClient)
+    }
+
+    @Provides
+    @Singleton
+    fun provideGxrtcApi(retrofit: retrofit2.Retrofit): GxrtcApi {
+        return RetrofitClient.provideGxrtcApi(retrofit)
+    }
+
+    @Provides
+    @Singleton
+    fun provideAppDatabase(@ApplicationContext context: Context): AppDatabase {
+        return Room.databaseBuilder(
+            context,
+            AppDatabase::class.java,
+            "xsynergy_database"
+        ).build()
+    }
+
+    @Provides
+    @Singleton
+    fun provideUserDao(database: AppDatabase) = database.userDao()
+
+    @Provides
+    @Singleton
+    fun provideSharedPreferences(@ApplicationContext context: Context): SharedPreferences {
+        return context.getSharedPreferences("xsynergy_prefs", Context.MODE_PRIVATE)
+    }
+
+    @Provides
+    @Singleton
+    fun provideAuthRepository(
+        gxrtcApi: GxrtcApi,
+        userDao: com.xsynergy.android.data.local.UserDao,
+        prefs: SharedPreferences
+    ): AuthRepository {
+        return AuthRepository(gxrtcApi, userDao, prefs)
+    }
+}

build.gradle

@@ -1,6 +1,7 @@
 buildscript {
     ext.kotlin_version = '1.9.24'
     ext.compose_version = '1.6.8'
+    ext.hilt_version = '2.48'
     repositories {
         google()
         mavenCentral()
@@ -8,6 +9,7 @@ buildscript {
     dependencies {
         classpath 'com.android.tools.build:gradle:8.13.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "com.google.dagger:hilt-android-gradle-plugin:$hilt_version"
     }
 }
 

docs/dev-plan-ds.md

@@ -25,6 +25,14 @@ object NetworkModule {
     @Provides
     @Singleton
     fun provideGxrtcApi(retrofit: Retrofit): GxrtcApi = retrofit.create(GxrtcApi::class.java)
+
+    @Provides
+    @Singleton
+    fun provideArAnnotationApi(retrofit: Retrofit): ArAnnotationApi = retrofit.create(ArAnnotationApi::class.java)
+
+    @Provides
+    @Singleton
+    fun provideFeaturePointApi(retrofit: Retrofit): FeaturePointApi = retrofit.create(FeaturePointApi::class.java)
 }
 
 // data/remote/GxrtcApi.kt - 新增
@@ -44,6 +52,128 @@ interface GxrtcApi {
     suspend fun getRooms(): Response<GxrtcResponse<List<RoomResponse>>>
 }
 
+// data/remote/ArAnnotationApi.kt - 新增
+interface ArAnnotationApi {
+    @POST("ar/anchor/save")
+    suspend fun saveAnchor(@Body request: SaveAnchorRequest): Response<GxrtcResponse<Unit>>
+
+    @GET("ar/room/{roomId}/anchors")
+    suspend fun getRoomAnchors(@Path("roomId") roomId: String): Response<GxrtcResponse<AnchorListResponse>>
+
+    @POST("ar/annotation/save")
+    suspend fun saveAnnotation(@Body annotation: ArAnnotation): Response<GxrtcResponse<Unit>>
+
+    @GET("ar/room/{roomId}/annotations")
+    suspend fun getRoomAnnotations(@Path("roomId") roomId: String): Response<GxrtcResponse<AnnotationListResponse>>
+
+    @DELETE("ar/annotation/{annotationId}")
+    suspend fun deleteAnnotation(@Path("annotationId") annotationId: String): Response<GxrtcResponse<Unit>>
+
+    @POST("ar/spatial/validate")
+    suspend fun validateSpatialConsistency(@Body request: SpatialValidationRequest): Response<GxrtcResponse<SpatialValidationResult>>
+
+    @POST("ar/annotations/version")
+    suspend fun createAnnotationVersion(@Body request: CreateVersionRequest): Response<GxrtcResponse<VersionResponse>>
+
+    @GET("ar/annotations/{roomId}/versions")
+    suspend fun getAnnotationVersions(@Path("roomId") roomId: String): Response<GxrtcResponse<List<VersionResponse>>>
+}
+
+// data/remote/FeaturePointApi.kt - 新增
+interface FeaturePointApi {
+    @POST("ar/feature-points/save")
+    suspend fun saveFeaturePoints(@Body request: SaveFeaturePointsRequest): Response<GxrtcResponse<Unit>>
+
+    @GET("ar/feature-points/{anchorId}")
+    suspend fun getAnchorFeatures(@Path("anchorId") anchorId: String): Response<GxrtcResponse<FeaturePointListResponse>>
+
+    @POST("ar/feature-points/match")
+    suspend fun matchFeaturePoints(@Body request: FeatureMatchRequest): Response<GxrtcResponse<FeatureMatchResponse>>
+
+    @POST("ar/feature-points/quality-assessment")
+    suspend fun assessFeatureQuality(@Body request: FeatureQualityRequest): Response<GxrtcResponse<FeatureQualityResponse>>
+}
+
+// 请求和响应数据模型
+data class SaveAnchorRequest(
+    val roomId: String,
+    val anchorId: String,
+    val position: List<Float>,
+    val rotation: List<Float>,
+    val createdBy: String
+)
+
+data class AnchorListResponse(val anchors: List<AnchorData>)
+
+data class AnnotationListResponse(val annotations: List<ArAnnotation>)
+
+data class SaveFeaturePointsRequest(
+    val anchorId: String,
+    val roomId: String,
+    val featurePoints: List<FeaturePoint>,
+    val deviceInfo: DeviceInfo
+)
+
+data class FeaturePointListResponse(val featurePoints: List<FeaturePoint>)
+
+data class SpatialValidationRequest(
+    val anchorId: String,
+    val currentPosition: List<Float>,
+    val currentRotation: List<Float>,
+    val deviceInfo: DeviceInfo
+)
+
+data class SpatialValidationResult(
+    val isValid: Boolean,
+    val confidence: Float,
+    val suggestedCorrection: SpatialTransform?,
+    val errorMessage: String?
+)
+
+data class FeatureMatchRequest(
+    val anchorId: String,
+    val queryFeatures: List<FeaturePoint>,
+    val maxResults: Int = 10
+)
+
+data class FeatureMatchResponse(
+    val matches: List<FeatureMatch>,
+    val confidence: Float
+)
+
+data class FeatureMatch(
+    val featurePoint: FeaturePoint,
+    val similarity: Float,
+    val spatialDistance: Float
+)
+
+data class FeatureQualityRequest(
+    val anchorId: String,
+    val featurePoints: List<FeaturePoint>
+)
+
+data class FeatureQualityResponse(
+    val overallQuality: Float,
+    val individualScores: Map<String, Float>,
+    val recommendations: List<String>
+)
+
+data class CreateVersionRequest(
+    val roomId: String,
+    val versionName: String,
+    val description: String,
+    val createdBy: String
+)
+
+data class VersionResponse(
+    val versionId: String,
+    val versionName: String,
+    val description: String,
+    val createdAt: Long,
+    val createdBy: String,
+    val annotationCount: Int
+)
+
 // 响应数据结构
 data class GxrtcResponse<T>(
     @SerializedName("meta") val meta: Meta,
@@ -423,35 +553,53 @@ data class AnchorData(
 )
 ```
 
-#### 4.2 AR标注持久化服务
+#### 4.2 AR标注持久化服务（增强版）
 ```kotlin
 // domain/service/ArAnnotationService.kt - 新增
 class ArAnnotationService @Inject constructor(
-    private val arAnnotationApi: ArAnnotationApi
+    private val arAnnotationApi: ArAnnotationApi,
+    private val featurePointApi: FeaturePointApi,
+    private val userRepository: UserRepository
 ) {
-    suspend fun saveAnchor(
+    suspend fun saveAnchorWithFeatures(
         roomId: String,
         anchorId: String,
-        position: Pose
+        position: Pose,
+        featurePoints: List<FeaturePoint>,
+        deviceInfo: DeviceInfo
     ): Result<Unit> {
         return try {
-            val request = SaveAnchorRequest(
+            // 保存锚点基本信息
+            val anchorRequest = SaveAnchorRequest(
                 roomId = roomId,
                 anchorId = anchorId,
                 position = listOf(position.tx(), position.ty(), position.tz()),
                 rotation = listOf(position.qx(), position.qy(), position.qz(), position.qw()),
-                createdBy = currentUserId
+                createdBy = userRepository.getCurrentUser()?.id ?: ""
             )
+            arAnnotationApi.saveAnchor(anchorRequest)
+
+            // 保存特征点数据
+            val featureRequest = SaveFeaturePointsRequest(
+                anchorId = anchorId,
+                roomId = roomId,
+                featurePoints = featurePoints,
+                deviceInfo = deviceInfo
+            )
+            featurePointApi.saveFeaturePoints(featureRequest)
 
-            arAnnotationApi.saveAnchor(request)
             Result.success(Unit)
         } catch (e: Exception) {
             Result.failure(e)
         }
     }
 
-    suspend fun loadRoomAnchors(roomId: String): List<AnchorData> {
+    suspend fun loadRoomAnchorsWithFeatures(roomId: String): List<AnchorWithFeatures> {
-        return arAnnotationApi.getRoomAnchors(roomId).anchors
+        val anchors = arAnnotationApi.getRoomAnchors(roomId).anchors
+        return anchors.map { anchor ->
+            val features = featurePointApi.getAnchorFeatures(anchor.anchorId).featurePoints
+            AnchorWithFeatures(anchor, features)
+        }
     }
 
     suspend fun saveAnnotation(annotation: ArAnnotation): Result<Unit> {
@@ -466,9 +614,59 @@ class ArAnnotationService @Inject constructor(
     suspend fun loadRoomAnnotations(roomId: String): List<ArAnnotation> {
         return arAnnotationApi.getRoomAnnotations(roomId).annotations
     }
+
+    suspend fun validateSpatialConsistency(
+        anchorId: String,
+        currentPose: Pose,
+        deviceInfo: DeviceInfo
+    ): Result<SpatialValidationResult> {
+        return try {
+            val request = SpatialValidationRequest(
+                anchorId = anchorId,
+                currentPosition = listOf(currentPose.tx(), currentPose.ty(), currentPose.tz()),
+                currentRotation = listOf(currentPose.qx(), currentPose.qy(), currentPose.qz(), currentPose.qw()),
+                deviceInfo = deviceInfo
+            )
+            val result = arAnnotationApi.validateSpatialConsistency(request)
+            Result.success(result)
+        } catch (e: Exception) {
+            Result.failure(e)
+        }
+    }
 }
 
-// data/model/ArAnnotation.kt - 新增
+// 数据模型增强
+data class AnchorWithFeatures(
+    val anchor: AnchorData,
+    val featurePoints: List<FeaturePoint>
+)
+
+data class FeaturePoint(
+    val position: List<Float>,
+    val descriptor: String, // base64编码的特征描述符
+    val qualityScore: Float,
+    val timestamp: Long = System.currentTimeMillis()
+)
+
+data class DeviceInfo(
+    val model: String,
+    val arCoreVersion: String,
+    val cameraCalibration: CameraCalibration?,
+    val imuCalibration: ImuCalibration?
+)
+
+data class CameraCalibration(
+    val focalLength: List<Float>,
+    val principalPoint: List<Float>,
+    val distortionCoefficients: List<Float>?
+)
+
+data class ImuCalibration(
+    val gyroBias: List<Float>?,
+    val accelBias: List<Float>?,
+    val magnetometerBias: List<Float>?
+)
+
 data class ArAnnotation(
     val id: String,
     val anchorId: String,
@@ -478,12 +676,21 @@ data class ArAnnotation(
     val size: Float,
     val roomId: String,
     val createdBy: String,
+    val spatialTransform: SpatialTransform? = null,
     val createdAt: Long = System.currentTimeMillis(),
-    val updatedAt: Long = System.currentTimeMillis()
+    val updatedAt: Long = System.currentTimeMillis(),
+    val version: Int = 1
+)
+
+data class SpatialTransform(
+    val position: List<Float>,
+    val rotation: List<Float>,
+    val scale: List<Float>,
+    val confidence: Float
 )
 
 enum class AnnotationType {
-    ARROW, CIRCLE, RECTANGLE, TEXT, HIGHLIGHT
+    ARROW, CIRCLE, RECTANGLE, TEXT, HIGHLIGHT, MEASUREMENT, NOTE
 }
 ```
 
@@ -1025,6 +1232,139 @@ GET /ar/analytics/accuracy?room_id={roomId}
 GET /ar/analytics/compatibility
 ```
 
+### 7. 特征点管理API（关键补充）
+```kotlin
+// 保存ARCore特征点数据
+POST /ar/feature-points/save
+Content-Type: application/json
+{
+  "anchor_id": "string",
+  "room_id": "string",
+  "feature_points": [
+    {
+      "position": [0.0, 0.0, 0.0],
+      "descriptor": "base64_encoded_descriptor",
+      "quality_score": 0.95
+    }
+  ],
+  "device_info": {
+    "model": "Pixel 6",
+    "ar_core_version": "1.50.0",
+    "camera_calibration": {
+      "focal_length": [1000.0, 1000.0],
+      "principal_point": [500.0, 500.0]
+    }
+  }
+}
+
+// 获取特征点数据用于重定位
+GET /ar/feature-points/{anchorId}
+
+// 批量特征点匹配（跨设备空间对齐）
+POST /ar/feature-points/match
+{
+  "anchor_id": "string",
+  "query_features": [
+    {
+      "position": [0.0, 0.0, 0.0],
+      "descriptor": "base64_encoded_descriptor"
+    }
+  ],
+  "max_results": 10
+}
+
+// 特征点质量评估
+POST /ar/feature-points/quality-assessment
+{
+  "anchor_id": "string",
+  "feature_points": [
+    {
+      "position": [0.0, 0.0, 0.0],
+      "descriptor": "base64_encoded_descriptor"
+    }
+  ]
+}
+```
+
+### 8. 空间一致性验证API
+```kotlin
+// 空间坐标转换验证
+POST /ar/spatial/validate-transform
+{
+  "source_anchor": "anchor_123",
+  "target_anchor": "anchor_456",
+  "transform_matrix": [
+    [1.0, 0.0, 0.0, 0.0],
+    [0.0, 1.0, 0.0, 0.0],
+    [0.0, 0.0, 1.0, 0.0],
+    [1.5, 2.0, 0.5, 1.0]
+  ],
+  "confidence": 0.92
+}
+
+// 多设备空间对齐状态
+GET /ar/spatial/alignment-status?room_id={roomId}
+
+// 强制空间重新对齐
+POST /ar/spatial/realign
+{
+  "room_id": "string",
+  "anchor_ids": ["anchor1", "anchor2", "anchor3"]
+}
+```
+
+### 9. 标注版本管理API
+```kotlin
+// 创建标注版本
+POST /ar/annotations/version
+{
+  "room_id": "string",
+  "version_name": "v1.0",
+  "description": "初始标注版本",
+  "created_by": "user123"
+}
+
+// 获取标注版本历史
+GET /ar/annotations/{roomId}/versions
+
+// 恢复到特定版本
+POST /ar/annotations/{roomId}/restore/{versionId}
+
+// 标注差异比较
+GET /ar/annotations/{roomId}/diff?version1={v1}&version2={v2}
+```
+
+### 10. 设备性能优化API
+```kotlin
+// 设备性能基准上报
+POST /ar/device/performance
+{
+  "device_model": "Pixel 6",
+  "ar_core_version": "1.50.0",
+  "performance_metrics": {
+    "frame_rate": 60.0,
+    "tracking_quality": 0.95,
+    "memory_usage": 256,
+    "battery_drain": 15.0
+  },
+  "recommended_settings": {
+    "max_annotations": 50,
+    "feature_point_density": 0.8,
+    "texture_quality": "medium"
+  }
+}
+
+// 获取设备优化配置
+GET /ar/device/{deviceModel}/optimization
+
+// 性能问题诊断
+POST /ar/device/diagnose
+{
+  "device_info": {...},
+  "performance_issues": ["low_framerate", "high_memory"]
+}
+```
+
 ---
 
 ## 📋 阶段8：优化和兼容性（增强版）