diff --git a/app/src/main/kotlin/com/stec/cmd/FeatureMount.kt b/app/src/main/kotlin/com/stec/cmd/FeatureMount.kt
index dbc262c..70642b2 100644
--- a/app/src/main/kotlin/com/stec/cmd/FeatureMount.kt
+++ b/app/src/main/kotlin/com/stec/cmd/FeatureMount.kt
@@ -2,6 +2,7 @@ package com.stec.cmd
 
 import com.stec.cmd.feature.home.ProjectWorkspaceFragment
 import com.stec.cmd.feature.mine.MineFragment
+import com.stec.cmd.feature.task.TaskWorkspaceFragment
 
 /**
  * 底部导航 5 Tab 与业务模块（功能明细表编号）的挂载点注册中心。
@@ -32,7 +33,7 @@ object FeatureMount {
     /** 挂载注册表：S1+ 替换 fragmentClass 即完成业务页挂载。 */
     val mounts: List<MountItem> = listOf(
         MountItem(Tab.HOME, ProjectWorkspaceFragment::class.java, "M2 项目工作台"),
-        MountItem(Tab.TASK, TaskFragment::class.java, "M3 任务管理"),
+        MountItem(Tab.TASK, TaskWorkspaceFragment::class.java, "M3 任务管理"),
         MountItem(Tab.COLLECT, CollectFragment::class.java, "M4+M5 数据采集"),
         MountItem(Tab.STATS, StatsFragment::class.java, "M6 统计与上传"),
         MountItem(Tab.MINE, MineFragment::class.java, "M1 我的"),
diff --git a/app/src/main/kotlin/com/stec/cmd/TaskFragment.kt b/app/src/main/kotlin/com/stec/cmd/TaskFragment.kt
deleted file mode 100644
index 557a73e..0000000
--- a/app/src/main/kotlin/com/stec/cmd/TaskFragment.kt
+++ /dev/null
@@ -1,7 +0,0 @@
-package com.stec.cmd
-
-import dagger.hilt.android.AndroidEntryPoint
-
-/** 任务占位（M3 任务管理，S2 挂载任务列表）。 */
-@AndroidEntryPoint
-class TaskFragment : PlaceholderFragment()
diff --git a/app/src/main/kotlin/com/stec/cmd/feature/task/TaskDetailFragment.kt b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskDetailFragment.kt
new file mode 100644
index 0000000..d4af28e
--- /dev/null
+++ b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskDetailFragment.kt
@@ -0,0 +1,93 @@
+package com.stec.cmd.feature.task
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import com.stec.cmd.R
+import com.stec.cmd.core.network.api.TaskItem
+import com.stec.cmd.databinding.FragmentTaskDetailBinding
+import kotlinx.serialization.json.Json
+
+/**
+ * 任务详情（M3-03 测组/测点完成度/计划周期展示）。
+ *
+ * 数据来自列表条目本身（明细表 M3-03 对应 API「2.6/2.7 data」，2.9 测点列表归属 M5），
+ * 经 arguments JSON 传参（ProjectSwitcherSheet 同款先例），纯展示无网络交互——
+ * 故不设 ViewModel（MVVM 最小状态机原则，见 design 留档）。
+ */
+class TaskDetailFragment : Fragment() {
+
+    private var _binding: FragmentTaskDetailBinding? = null
+    private val binding get() = checkNotNull(_binding)
+
+    /** 传参解析失败时退化为全「-」展示（数据源为本端自编码 JSON，正常不触发）。 */
+    private val task: TaskItem? by lazy {
+        arguments?.getString(ARG_TASK_JSON)?.let { raw ->
+            runCatching { JSON.decodeFromString(TaskItem.serializer(), raw) }.getOrNull()
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?,
+    ): View {
+        _binding = FragmentTaskDetailBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        binding.toolbar.setNavigationOnClickListener { parentFragmentManager.popBackStack() }
+        render()
+    }
+
+    private fun render() {
+        val data = task
+        binding.tvDetailCode.text = data?.TaskCode.orDash()
+        binding.tvDetailMold.text = data?.Mold.orDash()
+        binding.tvDetailMonitoring.text = data?.MonitoringType.orDash()
+        binding.tvDetailDuty.text = data?.DutyName.orDash()
+        binding.tvDetailProject.text = data?.SimpleName.orDash()
+        binding.tvDetailWorkPoint.text = data?.WorkPointName.orDash()
+        binding.tvDetailPlanId.text = data?.PlanID.orDash()
+        binding.tvDetailPeriod.text = data?.period
+            ?.takeIf { it.isNotBlank() }
+            ?.let { getString(R.string.task_detail_label_period_fmt, it) }
+            ?: getString(R.string.task_detail_unknown)
+        binding.tvDetailBegin.text = data?.BeginTime.orDash()
+        binding.tvDetailEnd.text = data?.EndTime.orDash()
+        binding.tvDetailGroup.text = data?.GroupID.orDash()
+        binding.tvDetailDegree.text = data?.CompleteDegree.orDash()
+        binding.tvDetailWorking.text = data?.Working.orDash()
+
+        degreePercent(data?.CompleteDegree)?.let { percent ->
+            binding.progressDegree.isVisible = true
+            binding.progressDegree.setProgressCompat(percent, true)
+        }
+    }
+
+    private fun String?.orDash(): String =
+        this?.takeIf { it.isNotBlank() } ?: getString(R.string.task_detail_unknown)
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    companion object {
+        private const val ARG_TASK_JSON = "task_json"
+
+        private val JSON = Json {
+            ignoreUnknownKeys = true
+            encodeDefaults = true
+        }
+
+        fun newInstance(taskJson: String): TaskDetailFragment =
+            TaskDetailFragment().apply {
+                arguments = Bundle().apply { putString(ARG_TASK_JSON, taskJson) }
+            }
+    }
+}
diff --git a/app/src/main/kotlin/com/stec/cmd/feature/task/TaskListAdapter.kt b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskListAdapter.kt
new file mode 100644
index 0000000..be37593
--- /dev/null
+++ b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskListAdapter.kt
@@ -0,0 +1,95 @@
+package com.stec.cmd.feature.task
+
+import android.content.res.ColorStateList
+import androidx.core.content.ContextCompat
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.ListAdapter
+import androidx.recyclerview.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import com.google.android.material.chip.Chip
+import com.google.android.material.color.MaterialColors
+import com.stec.cmd.R
+import com.stec.cmd.core.network.api.TaskItem
+import com.stec.cmd.databinding.ItemTaskBinding
+
+/**
+ * 任务列表适配器（M3-01/02 条目 + M3-04 状态 Chip 三态配色）。
+ *
+ * 状态 Chip 配色：未开始=surfaceVariant 灰 / 进行中=primaryContainer / 已完成=brand_success 绿。
+ */
+class TaskListAdapter(
+    private val onClick: (TaskItem) -> Unit,
+) : ListAdapter<TaskItem, TaskListAdapter.TaskViewHolder>(DIFF) {
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TaskViewHolder {
+        val binding = ItemTaskBinding.inflate(LayoutInflater.from(parent.context), parent, false)
+        return TaskViewHolder(binding)
+    }
+
+    override fun onBindViewHolder(holder: TaskViewHolder, position: Int) {
+        holder.bind(getItem(position))
+    }
+
+    inner class TaskViewHolder(
+        private val binding: ItemTaskBinding,
+    ) : RecyclerView.ViewHolder(binding.root) {
+
+        fun bind(task: TaskItem) {
+            val context = binding.root.context
+            binding.tvTaskCode.text = task.TaskCode?.takeIf { it.isNotBlank() }
+                ?: context.getString(R.string.task_detail_unknown)
+            binding.chipStatus.applyStatus(statusOf(task))
+            binding.tvTaskType.text = task.MonitoringType?.takeIf { it.isNotBlank() }
+                ?: context.getString(R.string.task_detail_unknown)
+            binding.tvTaskMold.text = task.Mold.orEmpty()
+            binding.tvTaskMold.isVisible = !task.Mold.isNullOrBlank()
+            binding.tvTaskMeta.text =
+                listOf(task.WorkPointName, task.DutyName)
+                    .filter { !it.isNullOrBlank() }
+                    .joinToString(" · ")
+            binding.tvTaskMeta.isVisible = binding.tvTaskMeta.text.isNotBlank()
+            binding.tvTaskPeriod.text = context.getString(
+                R.string.task_item_period_fmt,
+                task.BeginTime?.takeIf { it.isNotBlank() } ?: context.getString(R.string.task_detail_unknown),
+                task.EndTime?.takeIf { it.isNotBlank() } ?: context.getString(R.string.task_detail_unknown),
+            )
+            binding.tvTaskDegree.text = context.getString(
+                R.string.task_item_degree_fmt,
+                task.CompleteDegree?.takeIf { it.isNotBlank() }
+                    ?: context.getString(R.string.task_detail_unknown),
+            )
+            binding.root.setOnClickListener { onClick(task) }
+        }
+    }
+
+    private fun Chip.applyStatus(status: TaskStatus) {
+        val context = context
+        text = context.getString(status.labelRes)
+        val (background, foreground) = when (status) {
+            TaskStatus.NOT_STARTED ->
+                MaterialColors.getColor(this, com.google.android.material.R.attr.colorSurfaceVariant) to
+                    MaterialColors.getColor(this, com.google.android.material.R.attr.colorOnSurfaceVariant)
+            TaskStatus.IN_PROGRESS ->
+                MaterialColors.getColor(this, com.google.android.material.R.attr.colorPrimaryContainer) to
+                    MaterialColors.getColor(this, com.google.android.material.R.attr.colorOnPrimaryContainer)
+            TaskStatus.COMPLETED ->
+                ContextCompat.getColor(context, R.color.brand_success) to ContextCompat.getColor(context, R.color.brand_on_primary)
+        }
+        chipBackgroundColor = ColorStateList.valueOf(background)
+        setTextColor(foreground)
+    }
+
+    private companion object {
+        val DIFF = object : DiffUtil.ItemCallback<TaskItem>() {
+            override fun areItemsTheSame(oldItem: TaskItem, newItem: TaskItem): Boolean =
+                oldItem.TaskCode == newItem.TaskCode &&
+                    oldItem.GroupID == newItem.GroupID &&
+                    oldItem.PlanID == newItem.PlanID
+
+            override fun areContentsTheSame(oldItem: TaskItem, newItem: TaskItem): Boolean =
+                oldItem == newItem
+        }
+    }
+}
diff --git a/app/src/main/kotlin/com/stec/cmd/feature/task/TaskModels.kt b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskModels.kt
new file mode 100644
index 0000000..17f1b87
--- /dev/null
+++ b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskModels.kt
@@ -0,0 +1,61 @@
+package com.stec.cmd.feature.task
+
+import androidx.annotation.StringRes
+import com.stec.cmd.R
+import com.stec.cmd.core.network.api.TaskItem
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+/**
+ * 任务状态流转（M3-04）。文档 2.6/2.7 的 data 无显式状态字段，
+ * 按 design 兜底序从 CompleteDegree 与 BeginTime 推导：
+ * 完成度可解析且已完成 → 已完成；BeginTime 可解析且晚于当前 → 未开始；其余 → 进行中。
+ */
+enum class TaskStatus(@StringRes val labelRes: Int) {
+    NOT_STARTED(R.string.task_status_not_started),
+    IN_PROGRESS(R.string.task_status_in_progress),
+    COMPLETED(R.string.task_status_completed),
+}
+
+/** 文档口径的计划周期格式：yyyy-MM-dd HH:mm（2.6/2.7 BeginTime/EndTime）。 */
+private val TASK_TIME_FORMATS = listOf(
+    DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"),
+    DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"),
+)
+
+/** 完成度「已上传点数/总点数」，容忍空白与百分比后缀等夹带字符。 */
+private val DEGREE_REGEX = Regex("(\\d+)\\s*/\\s*(\\d+)")
+
+/** 解析计划时间；主格式失败时退回 ISO（LocalDateTime 默认格式）兜底。 */
+fun parseTaskTime(raw: String?): LocalDateTime? {
+    val value = raw?.trim().orEmpty()
+    if (value.isEmpty()) return null
+    TASK_TIME_FORMATS.forEach { format ->
+        runCatching { return LocalDateTime.parse(value, format) }
+    }
+    return runCatching { LocalDateTime.parse(value) }.getOrNull()
+}
+
+/** 解析完成度为 (已上传, 总数)；不可解析返回 null（UI 透传原文）。 */
+fun parseDegree(raw: String?): Pair<Int, Int>? {
+    val match = raw?.let { DEGREE_REGEX.find(it) } ?: return null
+    val uploaded = match.groupValues[1].toIntOrNull() ?: return null
+    val total = match.groupValues[2].toIntOrNull() ?: return null
+    return uploaded to total
+}
+
+/** 完成度百分比（0–100）；总数为 0 或不可解析时返回 null。 */
+fun degreePercent(raw: String?): Int? {
+    val (uploaded, total) = parseDegree(raw) ?: return null
+    if (total <= 0) return null
+    return (uploaded * 100 / total).coerceIn(0, 100)
+}
+
+/** 按兜底序推导任务状态（[now] 由调用方传入以便测试与刷新一致性）。 */
+fun statusOf(task: TaskItem, now: LocalDateTime = LocalDateTime.now()): TaskStatus {
+    val (uploaded, total) = parseDegree(task.CompleteDegree) ?: Pair(-1, -1)
+    if (total > 0 && uploaded >= total) return TaskStatus.COMPLETED
+    val begin = parseTaskTime(task.BeginTime)
+    if (begin != null && now.isBefore(begin)) return TaskStatus.NOT_STARTED
+    return TaskStatus.IN_PROGRESS
+}
diff --git a/app/src/main/kotlin/com/stec/cmd/feature/task/TaskRepository.kt b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskRepository.kt
new file mode 100644
index 0000000..9bf948d
--- /dev/null
+++ b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskRepository.kt
@@ -0,0 +1,76 @@
+package com.stec.cmd.feature.task
+
+import com.stec.cmd.core.network.ApiCaller
+import com.stec.cmd.core.network.ApiError
+import com.stec.cmd.core.network.api.TaskApi
+import com.stec.cmd.core.network.api.TaskItem
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.builtins.ListSerializer
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.JsonArray
+import kotlinx.serialization.json.JsonElement
+import kotlinx.serialization.json.JsonObject
+import kotlinx.serialization.json.JsonPrimitive
+import kotlinx.serialization.json.decodeFromJsonElement
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * 任务仓储（M3-01/02，2.6 GetUserPlanGroup / 2.7 GetPlanGroup）。
+ *
+ * 契约宽容：data 形态以 [taskListFromData] 归一提取——
+ * 兼容文档口径的 `{"TaskList":[…]}` 对象（含 TaskList 键值为二次 JSON 编码字符串）、
+ * 平铺数组、以及 data 直接为编码字符串（与 ProjectRepository.projectListFromData
+ * 对项目列表的宽容模式一致）。
+ */
+@Singleton
+class TaskRepository @Inject constructor(
+    private val taskApi: TaskApi,
+    private val apiCaller: ApiCaller,
+    private val json: Json,
+) {
+
+    /**
+     * 2.6 APP 端任务列表（本人测组任务）；[projectId] 传 null 时返回本人
+     * 全部项目当日任务，[planDate] 必填（yyyy-MM-dd）。
+     */
+    suspend fun myTasks(projectId: String?, planDate: String): List<TaskItem> =
+        taskListFromData(apiCaller.call { taskApi.getUserPlanGroup(projectId, planDate) })
+
+    /** 2.7 项目当前监测计划任务列表；[projectId] 传 null 时返回所有进行中项目。 */
+    suspend fun planTasks(projectId: String?): List<TaskItem> =
+        taskListFromData(apiCaller.call { taskApi.getPlanGroup(projectId) })
+
+    /**
+     * data → 任务列表归一提取：
+     * - JsonObject：优先取 `TaskList` 键（文档口径）；缺键时取首个 JsonArray 值兜底
+     *   （防御键名大小写漂移）；
+     * - 提取物为 JsonArray 直接解码；为 JsonPrimitive 时按二次 JSON 编码字符串解码；
+     * - data 本身为 JsonArray / JsonPrimitive 同样支持。
+     * 结构无法识别或字段不符时以 [ApiError.EmptyBodyError] 抛出。
+     */
+    private fun taskListFromData(data: JsonElement): List<TaskItem> {
+        val payload = when (data) {
+            is JsonObject ->
+                data[KEY_TASK_LIST]
+                    ?: data.values.filterIsInstance<JsonArray>().firstOrNull()
+                    ?: throw ApiError.EmptyBodyError("任务列表数据结构异常")
+            else -> data
+        }
+        val serializer = ListSerializer(TaskItem.serializer())
+        return try {
+            when (payload) {
+                is JsonArray -> json.decodeFromJsonElement(serializer, payload)
+                is JsonPrimitive -> json.decodeFromString(serializer, payload.content)
+                else -> throw ApiError.EmptyBodyError("任务列表数据结构异常")
+            }
+        } catch (e: SerializationException) {
+            throw ApiError.EmptyBodyError("任务列表解析失败：${e.message}")
+        }
+    }
+
+    private companion object {
+        /** 文档 2.6/2.7：data 内列表键名（确切大小写）。 */
+        const val KEY_TASK_LIST = "TaskList"
+    }
+}
diff --git a/app/src/main/kotlin/com/stec/cmd/feature/task/TaskViewModel.kt b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskViewModel.kt
new file mode 100644
index 0000000..9b0d686
--- /dev/null
+++ b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskViewModel.kt
@@ -0,0 +1,189 @@
+package com.stec.cmd.feature.task
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.stec.cmd.config.ConfigRepository
+import com.stec.cmd.core.common.UiState
+import com.stec.cmd.core.network.ApiError
+import com.stec.cmd.core.network.api.TaskItem
+import com.stec.cmd.feature.mine.userMessage
+import com.stec.cmd.session.ProjectSession
+import com.stec.cmd.session.SessionRepository
+import com.stec.cmd.session.SessionState
+import dagger.hilt.android.lifecycle.HiltViewModel
+import java.time.LocalDate
+import java.time.LocalDateTime
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+/** 任务页分段：我的任务（2.6 GetUserPlanGroup）/ 计划任务（2.7 GetPlanGroup）。 */
+enum class TaskTab {
+    MY_TASKS,
+    PLAN_TASKS,
+}
+
+/**
+ * 任务工作台（M3-01/02/04/05）：
+ * 会话 / 配置 / 选中项目门控 + 双列表独立 UiState + 本地筛选链。
+ *
+ * 门控沿用 HomeViewModel：SignedIn 且三要素就绪才允许加载；会话离开 SignedIn
+ * 复位为 Idle；**selectedProject 任一变化即复位双列表并重载当前 Tab**
+ * （M2-03「切换项目后任务跟随刷新」承诺的落地）。
+ */
+@HiltViewModel
+class TaskViewModel @Inject constructor(
+    private val taskRepository: TaskRepository,
+    projectSession: ProjectSession,
+    sessionRepository: SessionRepository,
+    private val configRepository: ConfigRepository,
+) : ViewModel() {
+
+    /** 会话状态流（Restoring/SignedOut/SignedIn 门控）。 */
+    val sessionState = sessionRepository.state
+
+    /** 连接配置快照流（三要素缺失时引导配置）。 */
+    val configSnapshot = configRepository.snapshotStateFlow
+
+    /** 当前选中项目（ProjectSession 共享，切换即联动刷新）。 */
+    val selectedProject = projectSession.selectedProject
+
+    private val _tab = MutableStateFlow(TaskTab.MY_TASKS)
+    val tab: StateFlow<TaskTab> = _tab.asStateFlow()
+
+    /** 状态筛选（null=全部，M3-05 本地过滤，双列表通用）。 */
+    private val _statusFilter = MutableStateFlow<TaskStatus?>(null)
+    val statusFilter: StateFlow<TaskStatus?> = _statusFilter.asStateFlow()
+
+    /** 2.6 PlanDate（文档必填，默认当天；日期选择后服务端重查）。 */
+    private val _planDate = MutableStateFlow(LocalDate.now())
+    val planDate: StateFlow<LocalDate> = _planDate.asStateFlow()
+
+    /** 2.7 无日期参数：本地按 EndTime 同日过滤（null=全部）。 */
+    private val _dateFilter = MutableStateFlow<LocalDate?>(null)
+    val dateFilter: StateFlow<LocalDate?> = _dateFilter.asStateFlow()
+
+    private val _myTasks = MutableStateFlow<UiState<List<TaskItem>>>(UiState.Idle)
+    val myTasks: StateFlow<UiState<List<TaskItem>>> = _myTasks.asStateFlow()
+
+    private val _planTasks = MutableStateFlow<UiState<List<TaskItem>>>(UiState.Idle)
+    val planTasks: StateFlow<UiState<List<TaskItem>>> = _planTasks.asStateFlow()
+
+    init {
+        viewModelScope.launch {
+            sessionState.collect { state ->
+                if (state is SessionState.SignedIn) {
+                    if (configRepository.snapshotStateFlow.value.isReady) loadCurrentIfIdle()
+                } else {
+                    resetLists()
+                }
+            }
+        }
+        viewModelScope.launch {
+            configSnapshot.collect { snapshot ->
+                if (snapshot.isReady && sessionState.value is SessionState.SignedIn) {
+                    loadCurrentIfIdle()
+                }
+            }
+        }
+        viewModelScope.launch {
+            selectedProject.collect {
+                resetLists()
+                loadCurrentIfIdle()
+            }
+        }
+    }
+
+    /** 分段切换：惰性加载目标列表，清掉 2.7 的本地日期过滤（两 Tab 语义不同）。 */
+    fun selectTab(tab: TaskTab) {
+        if (_tab.value == tab) return
+        _tab.value = tab
+        _dateFilter.value = null
+        loadCurrentIfIdle()
+    }
+
+    /** 下拉刷新 / 错误重试 / 空态刷新。 */
+    fun refresh() {
+        when (_tab.value) {
+            TaskTab.MY_TASKS -> if (_myTasks.value !is UiState.Loading) loadMyTasks()
+            TaskTab.PLAN_TASKS -> if (_planTasks.value !is UiState.Loading) loadPlanTasks()
+        }
+    }
+
+    /** M3-05 状态筛选（本地）。 */
+    fun updateStatusFilter(status: TaskStatus?) {
+        _statusFilter.value = status
+    }
+
+    /**
+     * M3-05 时间筛选：2.6 改 PlanDate 服务端重查；2.7 本地按 EndTime 过滤。
+     */
+    fun pickDate(date: LocalDate) {
+        when (_tab.value) {
+            TaskTab.MY_TASKS -> {
+                _planDate.value = date
+                if (selectedProject.value != null && _myTasks.value !is UiState.Loading) {
+                    loadMyTasks()
+                }
+            }
+            TaskTab.PLAN_TASKS -> _dateFilter.value = date
+        }
+    }
+
+    /** 清除 2.7 本地日期过滤（恢复全部）。 */
+    fun clearDateFilter() {
+        _dateFilter.value = null
+    }
+
+    /** 当前 Tab 经状态/日期筛选链后的可见列表（UI 只渲染不加工）。 */
+    fun displayedTasks(): List<TaskItem> {
+        val state = if (_tab.value == TaskTab.MY_TASKS) _myTasks.value else _planTasks.value
+        val list = (state as? UiState.Success)?.data.orEmpty()
+        val now = LocalDateTime.now()
+        return list.filter { task ->
+            val statusOk = _statusFilter.value == null || statusOf(task, now) == _statusFilter.value
+            val dateOk = _tab.value != TaskTab.PLAN_TASKS || _dateFilter.value == null ||
+                parseTaskTime(task.EndTime)?.toLocalDate() == _dateFilter.value
+            statusOk && dateOk
+        }
+    }
+
+    private fun loadCurrentIfIdle() {
+        if (selectedProject.value == null) return
+        when (_tab.value) {
+            TaskTab.MY_TASKS -> if (_myTasks.value is UiState.Idle) loadMyTasks()
+            TaskTab.PLAN_TASKS -> if (_planTasks.value is UiState.Idle) loadPlanTasks()
+        }
+    }
+
+    private fun resetLists() {
+        _myTasks.value = UiState.Idle
+        _planTasks.value = UiState.Idle
+    }
+
+    private fun loadMyTasks() {
+        viewModelScope.launch {
+            _myTasks.value = UiState.Loading
+            _myTasks.value = try {
+                UiState.Success(
+                    taskRepository.myTasks(selectedProject.value?.ID, _planDate.value.toString()),
+                )
+            } catch (e: ApiError) {
+                UiState.Error(e.userMessage())
+            }
+        }
+    }
+
+    private fun loadPlanTasks() {
+        viewModelScope.launch {
+            _planTasks.value = UiState.Loading
+            _planTasks.value = try {
+                UiState.Success(taskRepository.planTasks(selectedProject.value?.ID))
+            } catch (e: ApiError) {
+                UiState.Error(e.userMessage())
+            }
+        }
+    }
+}
diff --git a/app/src/main/kotlin/com/stec/cmd/feature/task/TaskWorkspaceFragment.kt b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskWorkspaceFragment.kt
new file mode 100644
index 0000000..8309b40
--- /dev/null
+++ b/app/src/main/kotlin/com/stec/cmd/feature/task/TaskWorkspaceFragment.kt
@@ -0,0 +1,229 @@
+package com.stec.cmd.feature.task
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.commit
+import androidx.fragment.app.viewModels
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.lifecycleScope
+import androidx.lifecycle.repeatOnLifecycle
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.google.android.material.bottomnavigation.BottomNavigationView
+import com.google.android.material.datepicker.MaterialDatePicker
+import com.stec.cmd.R
+import com.stec.cmd.core.common.UiState
+import com.stec.cmd.core.network.api.TaskItem
+import com.stec.cmd.databinding.FragmentTaskBinding
+import com.stec.cmd.feature.mine.ConfigFragment
+import com.stec.cmd.feature.mine.LoginFragment
+import com.stec.cmd.session.SessionState
+import dagger.hilt.android.AndroidEntryPoint
+import java.time.Instant
+import java.time.ZoneOffset
+import kotlinx.coroutines.launch
+import kotlinx.serialization.json.Json
+
+/**
+ * 任务工作台（M3-01/02 双列表入口 / M3-04 状态流转 / M3-05 筛选与下拉刷新）。
+ *
+ * 渲染状态机对齐首页：Restoring → 中性加载；SignedOut → 登录 CTA；
+ * SignedIn → 配置门控 → 未选项目引导空态（CTA→首页切换项目）→
+ * 当前 Tab 列表加载/空/错误/内容四态。
+ * 子页（详情/登录/配置）沿用「add + hide + addToBackStack」壳层模式。
+ */
+@AndroidEntryPoint
+class TaskWorkspaceFragment : Fragment() {
+
+    private var _binding: FragmentTaskBinding? = null
+    private val binding get() = checkNotNull(_binding)
+
+    private val viewModel: TaskViewModel by viewModels()
+
+    private val listAdapter by lazy { TaskListAdapter(::openDetail) }
+
+    private val json = Json {
+        ignoreUnknownKeys = true
+        encodeDefaults = true
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?,
+    ): View {
+        _binding = FragmentTaskBinding.inflate(inflater, container, false)
+        return binding.root
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        binding.recyclerTasks.layoutManager = LinearLayoutManager(requireContext())
+        binding.recyclerTasks.adapter = listAdapter
+        binding.swipeRefresh.setColorSchemeResources(R.color.brand_primary)
+        binding.swipeRefresh.setOnRefreshListener { viewModel.refresh() }
+        binding.btnGoLogin.setOnClickListener { openOnTop(LoginFragment(), TAG_LOGIN) }
+        binding.btnGoConfig.setOnClickListener { openOnTop(ConfigFragment(), TAG_CONFIG) }
+        binding.btnGoHome.setOnClickListener { goHomeTab() }
+        binding.btnRetry.setOnClickListener { viewModel.refresh() }
+        binding.btnEmptyRefresh.setOnClickListener { viewModel.refresh() }
+        binding.chipDate.setOnClickListener { showDatePicker() }
+        binding.chipDate.setOnCloseIconClickListener { viewModel.clearDateFilter() }
+
+        binding.toggleTab.addOnButtonCheckedListener { _, checkedId, isChecked ->
+            if (isChecked) {
+                viewModel.selectTab(
+                    if (checkedId == R.id.btn_tab_my) TaskTab.MY_TASKS else TaskTab.PLAN_TASKS,
+                )
+            }
+        }
+        binding.chipGroupFilter.setOnCheckedStateChangeListener { _, checkedIds ->
+            viewModel.updateStatusFilter(
+                when (checkedIds.firstOrNull()) {
+                    R.id.chip_filter_not_started -> TaskStatus.NOT_STARTED
+                    R.id.chip_filter_in_progress -> TaskStatus.IN_PROGRESS
+                    R.id.chip_filter_completed -> TaskStatus.COMPLETED
+                    else -> null
+                },
+            )
+        }
+
+        viewLifecycleOwner.lifecycleScope.launch {
+            viewLifecycleOwner.repeatOnLifecycle(Lifecycle.State.STARTED) {
+                launch { viewModel.sessionState.collect { render() } }
+                launch { viewModel.configSnapshot.collect { render() } }
+                launch { viewModel.selectedProject.collect { render() } }
+                launch { viewModel.tab.collect { render() } }
+                launch { viewModel.statusFilter.collect { render() } }
+                launch { viewModel.dateFilter.collect { render() } }
+                launch { viewModel.planDate.collect { render() } }
+                launch { viewModel.myTasks.collect { render() } }
+                launch { viewModel.planTasks.collect { render() } }
+            }
+        }
+    }
+
+    /** 任一流变化即整体重渲（读 ViewModel 当前值，避免组合流样板）。 */
+    private fun render() {
+        val session = viewModel.sessionState.value
+        val config = viewModel.configSnapshot.value
+        val selected = viewModel.selectedProject.value
+
+        binding.progress.isVisible = false
+        binding.stateSignedOut.isVisible = false
+        binding.stateConfig.isVisible = false
+        binding.stateNoProject.isVisible = false
+        binding.stateError.isVisible = false
+        binding.stateEmpty.isVisible = false
+
+        when (session) {
+            // 冷启动恢复中：中性加载，不引导登录
+            SessionState.Restoring -> binding.progress.isVisible = true
+            SessionState.SignedOut -> binding.stateSignedOut.isVisible = true
+            is SessionState.SignedIn -> {
+                if (!config.isReady) {
+                    binding.stateConfig.isVisible = true
+                    return
+                }
+                if (selected == null) {
+                    binding.stateNoProject.isVisible = true
+                    return
+                }
+                binding.groupHeader.isVisible = true
+                binding.tvTaskProject.text = selected.SimpleName?.takeIf { it.isNotBlank() }
+                    ?: getString(R.string.home_unnamed_project)
+                renderList()
+            }
+        }
+    }
+
+    private fun renderList() {
+        val tab = viewModel.tab.value
+        val state =
+            if (tab == TaskTab.MY_TASKS) viewModel.myTasks.value else viewModel.planTasks.value
+
+        binding.swipeRefresh.isVisible = true
+        binding.swipeRefresh.isRefreshing = state is UiState.Loading
+
+        // 日期 Chip 双语义：2.6=PlanDate（服务端重查）；2.7=本地 EndTime 过滤（可清除）
+        if (tab == TaskTab.MY_TASKS) {
+            binding.chipDate.text =
+                getString(R.string.task_filter_date_fmt, viewModel.planDate.value.toString())
+            binding.chipDate.isCloseIconVisible = false
+        } else {
+            val filter = viewModel.dateFilter.value
+            binding.chipDate.text = filter?.let { getString(R.string.task_filter_date_fmt, it.toString()) }
+                ?: getString(R.string.task_filter_date_any)
+            binding.chipDate.isCloseIconVisible = filter != null
+        }
+
+        when (state) {
+            is UiState.Loading -> Unit // 首载由下拉圈呈现
+            is UiState.Error -> {
+                binding.tvErrorMessage.text = state.message
+                binding.stateError.isVisible = true
+            }
+            is UiState.Success -> {
+                val visible = viewModel.displayedTasks()
+                listAdapter.submitList(visible)
+                if (visible.isEmpty()) {
+                    binding.tvEmptyMessage.text =
+                        if (tab == TaskTab.MY_TASKS) getString(R.string.task_empty_my)
+                        else getString(R.string.task_empty_plan)
+                    binding.stateEmpty.isVisible = true
+                }
+            }
+            UiState.Idle -> Unit // 会话/配置/项目流将触发自动加载
+        }
+    }
+
+    /** M3-05 时间筛选入口（MaterialDatePicker，UTC 毫秒 → 本地语义日期）。 */
+    private fun showDatePicker() {
+        val picker = MaterialDatePicker.Builder.datePicker()
+            .setTitleText(R.string.task_date_picker_title)
+            .build()
+        picker.addOnPositiveButtonClickListener { utcMillis ->
+            viewModel.pickDate(
+                Instant.ofEpochMilli(utcMillis).atZone(ZoneOffset.UTC).toLocalDate(),
+            )
+        }
+        picker.show(childFragmentManager, TAG_DATE)
+    }
+
+    /** 空态 CTA：切回首页 Tab 选项目（导航壳零改动，经底栏 itemId 触发既有切页）。 */
+    private fun goHomeTab() {
+        requireActivity().findViewById<BottomNavigationView>(R.id.bottom_nav)
+            .selectedItemId = R.id.nav_home
+    }
+
+    /** 详情页跳转：TaskItem 经 JSON 传参（与 ProjectSwitcherSheet 同款先例）。 */
+    private fun openDetail(task: TaskItem) {
+        openOnTop(
+            TaskDetailFragment.newInstance(json.encodeToString(TaskItem.serializer(), task)),
+            TAG_DETAIL,
+        )
+    }
+
+    private fun openOnTop(fragment: Fragment, tag: String) {
+        parentFragmentManager.commit {
+            setReorderingAllowed(true)
+            add(R.id.fragment_container, fragment, tag)
+            hide(this@TaskWorkspaceFragment)
+            addToBackStack(null)
+        }
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+    private companion object {
+        const val TAG_LOGIN = "task_login"
+        const val TAG_CONFIG = "task_config"
+        const val TAG_DETAIL = "task_detail"
+        const val TAG_DATE = "task_date_picker"
+    }
+}
diff --git a/app/src/main/res/layout/fragment_task.xml b/app/src/main/res/layout/fragment_task.xml
new file mode 100644
index 0000000..0d37480
--- /dev/null
+++ b/app/src/main/res/layout/fragment_task.xml
@@ -0,0 +1,312 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 任务工作台（M3-01/02 双列表入口 / M3-04 状态 Chip / M3-05 筛选与下拉刷新） -->
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/brand_background">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <!-- 头部：项目上下文 + 分段切换 + 筛选（仅已登录且选中项目时可见） -->
+        <LinearLayout
+            android:id="@+id/group_header"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:visibility="gone">
+
+            <TextView
+                android:id="@+id/tv_task_project"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingHorizontal="20dp"
+                android:paddingTop="16dp"
+                android:textColor="?attr/colorOnSurface"
+                android:textSize="20sp"
+                android:textStyle="bold" />
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingHorizontal="20dp"
+                android:paddingTop="2dp"
+                android:alpha="0.6"
+                android:text="@string/task_project_hint"
+                android:textSize="12sp" />
+
+            <com.google.android.material.button.MaterialButtonToggleGroup
+                android:id="@+id/toggle_tab"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="20dp"
+                android:layout_marginTop="12dp"
+                app:checkedButton="@+id/btn_tab_my"
+                app:selectionRequired="true"
+                app:singleSelection="true">
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/btn_tab_my"
+                    style="?attr/materialButtonOutlinedStyle"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/task_tab_my" />
+
+                <com.google.android.material.button.MaterialButton
+                    android:id="@+id/btn_tab_plan"
+                    style="?attr/materialButtonOutlinedStyle"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:text="@string/task_tab_plan" />
+            </com.google.android.material.button.MaterialButtonToggleGroup>
+
+            <!-- M3-05 筛选行：状态单选（本地过滤）+ 日期（2.6 服务端重查 / 2.7 本地过滤） -->
+            <HorizontalScrollView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:paddingHorizontal="16dp"
+                android:paddingTop="8dp"
+                android:paddingBottom="4dp"
+                android:scrollbars="none">
+
+                <com.google.android.material.chip.ChipGroup
+                    android:id="@+id/chip_group_filter"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    app:chipSpacingHorizontal="8dp"
+                    app:selectionRequired="true"
+                    app:singleLine="true"
+                    app:singleSelection="true">
+
+                    <com.google.android.material.chip.Chip
+                        android:id="@+id/chip_filter_all"
+                        style="@style/Widget.Material3.Chip.Filter"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:checked="true"
+                        android:text="@string/task_filter_all" />
+
+                    <com.google.android.material.chip.Chip
+                        android:id="@+id/chip_filter_not_started"
+                        style="@style/Widget.Material3.Chip.Filter"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_filter_not_started" />
+
+                    <com.google.android.material.chip.Chip
+                        android:id="@+id/chip_filter_in_progress"
+                        style="@style/Widget.Material3.Chip.Filter"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_filter_in_progress" />
+
+                    <com.google.android.material.chip.Chip
+                        android:id="@+id/chip_filter_completed"
+                        style="@style/Widget.Material3.Chip.Filter"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_filter_completed" />
+
+                    <com.google.android.material.chip.Chip
+                        android:id="@+id/chip_date"
+                        style="@style/Widget.Material3.Chip.Assist"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_filter_date_any"
+                        app:chipIcon="@drawable/ic_nav_task"
+                        app:chipIconTint="?attr/colorPrimary" />
+                </com.google.android.material.chip.ChipGroup>
+            </HorizontalScrollView>
+        </LinearLayout>
+
+        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+            android:id="@+id/swipe_refresh"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1">
+
+            <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/recycler_tasks"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:clipToPadding="false"
+                android:overScrollMode="never"
+                android:paddingBottom="24dp" />
+        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+    </LinearLayout>
+
+    <ProgressBar
+        android:id="@+id/progress"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:indeterminate="true"
+        android:visibility="gone" />
+
+    <!-- 未登录空态 -->
+    <LinearLayout
+        android:id="@+id/state_signed_out"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/brand_background"
+        android:clickable="true"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="32dp"
+        android:visibility="gone">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="@string/task_signed_out_title"
+            android:textColor="?attr/colorOnSurface"
+            android:textSize="18sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:alpha="0.7"
+            android:gravity="center"
+            android:text="@string/task_signed_out_hint"
+            android:textSize="14sp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_go_login"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/task_go_login" />
+    </LinearLayout>
+
+    <!-- 配置缺失空态 -->
+    <LinearLayout
+        android:id="@+id/state_config"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/brand_background"
+        android:clickable="true"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="32dp"
+        android:visibility="gone">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="@string/task_config_missing"
+            android:textColor="?attr/colorOnSurface"
+            android:textSize="16sp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_go_config"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/task_go_config" />
+    </LinearLayout>
+
+    <!-- 未选项目空态（CTA→首页切换项目，M2-03 联动刷新承诺闭环） -->
+    <LinearLayout
+        android:id="@+id/state_no_project"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/brand_background"
+        android:clickable="true"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="32dp"
+        android:visibility="gone">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="@string/task_no_project_title"
+            android:textColor="?attr/colorOnSurface"
+            android:textSize="18sp"
+            android:textStyle="bold" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:alpha="0.7"
+            android:gravity="center"
+            android:text="@string/task_no_project_hint"
+            android:textSize="14sp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_go_home"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/task_go_home" />
+    </LinearLayout>
+
+    <!-- 错误态 -->
+    <LinearLayout
+        android:id="@+id/state_error"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/brand_background"
+        android:clickable="true"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="32dp"
+        android:visibility="gone">
+
+        <TextView
+            android:id="@+id/tv_error_message"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:textColor="?attr/colorError"
+            android:textSize="14sp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_retry"
+            style="?attr/materialButtonOutlinedStyle"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:text="@string/task_retry" />
+    </LinearLayout>
+
+    <!-- 空列表态 -->
+    <LinearLayout
+        android:id="@+id/state_empty"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/brand_background"
+        android:clickable="true"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:padding="32dp"
+        android:visibility="gone">
+
+        <TextView
+            android:id="@+id/tv_empty_message"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:alpha="0.7"
+            android:gravity="center"
+            android:textSize="14sp" />
+
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_empty_refresh"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="8dp"
+            android:text="@string/task_empty_refresh" />
+    </LinearLayout>
+</FrameLayout>
diff --git a/app/src/main/res/layout/fragment_task_detail.xml b/app/src/main/res/layout/fragment_task_detail.xml
new file mode 100644
index 0000000..42d80df
--- /dev/null
+++ b/app/src/main/res/layout/fragment_task_detail.xml
@@ -0,0 +1,338 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 任务详情（M3-03 测组/测点完成度/计划周期 + M3-04 状态来源字段分区展示） -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/brand_background"
+    android:orientation="vertical">
+
+    <com.google.android.material.appbar.MaterialToolbar
+        android:id="@+id/toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        app:navigationIcon="@drawable/ic_back"
+        app:navigationIconTint="?attr/colorOnSurface"
+        app:title="@string/task_detail_title"
+        app:titleTextColor="?attr/colorOnSurface" />
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:overScrollMode="never">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:paddingHorizontal="20dp"
+            android:paddingTop="8dp"
+            android:paddingBottom="32dp">
+
+            <!-- 任务标识 -->
+            <com.google.android.material.card.MaterialCardView
+                style="@style/TaskDetailCard"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                app:cardBackgroundColor="@color/brand_surface"
+                app:cardCornerRadius="16dp"
+                app:cardElevation="0dp">
+
+                <LinearLayout style="@style/TaskDetailCardContent">
+
+                    <TextView
+                        style="@style/TaskDetailSectionTitle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_detail_section_identity" />
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_code" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_code"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_mold" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_mold"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_monitoring" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_monitoring"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_duty" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_duty"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+                </LinearLayout>
+            </com.google.android.material.card.MaterialCardView>
+
+            <!-- 项目与工点 -->
+            <com.google.android.material.card.MaterialCardView
+                style="@style/TaskDetailCard"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                app:cardBackgroundColor="@color/brand_surface"
+                app:cardCornerRadius="16dp"
+                app:cardElevation="0dp">
+
+                <LinearLayout style="@style/TaskDetailCardContent">
+
+                    <TextView
+                        style="@style/TaskDetailSectionTitle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_detail_section_project" />
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_project" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_project"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_work_point" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_work_point"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+                </LinearLayout>
+            </com.google.android.material.card.MaterialCardView>
+
+            <!-- 监测计划 -->
+            <com.google.android.material.card.MaterialCardView
+                style="@style/TaskDetailCard"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                app:cardBackgroundColor="@color/brand_surface"
+                app:cardCornerRadius="16dp"
+                app:cardElevation="0dp">
+
+                <LinearLayout style="@style/TaskDetailCardContent">
+
+                    <TextView
+                        style="@style/TaskDetailSectionTitle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_detail_section_plan" />
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_plan_id" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_plan_id"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_period" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_period"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_begin" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_begin"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_end" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_end"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+                </LinearLayout>
+            </com.google.android.material.card.MaterialCardView>
+
+            <!-- 测组与完成度（M3-03 测点维度以完成度呈现，2.9 归属 M5） -->
+            <com.google.android.material.card.MaterialCardView
+                style="@style/TaskDetailCard"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                app:cardBackgroundColor="@color/brand_surface"
+                app:cardCornerRadius="16dp"
+                app:cardElevation="0dp">
+
+                <LinearLayout style="@style/TaskDetailCardContent">
+
+                    <TextView
+                        style="@style/TaskDetailSectionTitle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_detail_section_group" />
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_group" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_group"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <LinearLayout style="@style/TaskDetailRow">
+
+                        <TextView
+                            style="@style/TaskDetailLabel"
+                            android:layout_width="wrap_content"
+                            android:layout_height="wrap_content"
+                            android:text="@string/task_detail_label_degree" />
+
+                        <TextView
+                            android:id="@+id/tv_detail_degree"
+                            style="@style/TaskDetailValue"
+                            android:layout_width="0dp"
+                            android:layout_height="wrap_content"
+                            android:layout_weight="1" />
+                    </LinearLayout>
+
+                    <com.google.android.material.progressindicator.LinearProgressIndicator
+                        android:id="@+id/progress_degree"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:layout_marginTop="8dp"
+                        android:max="100"
+                        android:visibility="gone"
+                        app:indicatorColor="?attr/colorPrimary"
+                        app:trackCornerRadius="4dp"
+                        app:trackThickness="8dp" />
+                </LinearLayout>
+            </com.google.android.material.card.MaterialCardView>
+
+            <!-- 施工工况 -->
+            <com.google.android.material.card.MaterialCardView
+                style="@style/TaskDetailCard"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                app:cardBackgroundColor="@color/brand_surface"
+                app:cardCornerRadius="16dp"
+                app:cardElevation="0dp">
+
+                <LinearLayout style="@style/TaskDetailCardContent">
+
+                    <TextView
+                        style="@style/TaskDetailSectionTitle"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:text="@string/task_detail_section_working" />
+
+                    <TextView
+                        android:id="@+id/tv_detail_working"
+                        android:layout_width="match_parent"
+                        android:layout_height="wrap_content"
+                        android:alpha="0.8"
+                        android:textSize="14sp" />
+                </LinearLayout>
+            </com.google.android.material.card.MaterialCardView>
+        </LinearLayout>
+    </ScrollView>
+</LinearLayout>
diff --git a/app/src/main/res/layout/item_task.xml b/app/src/main/res/layout/item_task.xml
new file mode 100644
index 0000000..e91ffd7
--- /dev/null
+++ b/app/src/main/res/layout/item_task.xml
@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 任务卡片（M3-01/02 列表条目，M3-04 状态 Chip 三态配色） -->
+<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/card_task"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginHorizontal="20dp"
+    android:layout_marginTop="12dp"
+    android:clickable="true"
+    android:focusable="true"
+    android:foreground="?attr/selectableItemBackground"
+    app:cardBackgroundColor="@color/brand_surface"
+    app:cardCornerRadius="16dp"
+    app:cardElevation="0dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_vertical"
+            android:orientation="horizontal">
+
+            <TextView
+                android:id="@+id/tv_task_code"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:ellipsize="end"
+                android:maxLines="1"
+                android:textColor="?attr/colorOnSurface"
+                android:textSize="15sp"
+                android:textStyle="bold" />
+
+            <com.google.android.material.chip.Chip
+                android:id="@+id/chip_status"
+                style="@style/Widget.Material3.Chip.Assist"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="8dp"
+                android:clickable="false"
+                android:focusable="false" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:gravity="center_vertical"
+            android:orientation="horizontal">
+
+            <TextView
+                android:id="@+id/tv_task_type"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textColor="?attr/colorPrimary"
+                android:textSize="13sp"
+                android:textStyle="bold" />
+
+            <TextView
+                android:id="@+id/tv_task_mold"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="10dp"
+                android:alpha="0.65"
+                android:textSize="13sp" />
+        </LinearLayout>
+
+        <TextView
+            android:id="@+id/tv_task_meta"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:alpha="0.75"
+            android:textSize="13sp" />
+
+        <TextView
+            android:id="@+id/tv_task_period"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:alpha="0.75"
+            android:textSize="13sp" />
+
+        <TextView
+            android:id="@+id/tv_task_degree"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:alpha="0.75"
+            android:textSize="13sp" />
+    </LinearLayout>
+</com.google.android.material.card.MaterialCardView>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index aeb9a40..ce5e110 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -7,4 +7,6 @@
     <color name="brand_surface">#FFFFFF</color>
     <color name="launcher_background">#1E6FD9</color>
     <color name="login_error">#B3261E</color>
+    <!-- M3-04 已完成任务状态 Chip -->
+    <color name="brand_success">#2E7D32</color>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 3fdc8f7..0a17e87 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -26,6 +26,55 @@
     <string name="home_empty_refresh">刷新</string>
     <string name="sheet_switch_title">切换项目</string>
 
+    <!-- M3 任务管理（M3-01/02/03/04/05） -->
+    <string name="task_tab_my">我的任务</string>
+    <string name="task_tab_plan">计划任务</string>
+    <string name="task_project_hint">在首页切换项目后，任务列表自动刷新</string>
+    <string name="task_filter_all">全部</string>
+    <string name="task_filter_not_started">未开始</string>
+    <string name="task_filter_in_progress">进行中</string>
+    <string name="task_filter_completed">已完成</string>
+    <string name="task_filter_date_fmt">日期：%1$s</string>
+    <string name="task_filter_date_any">时间</string>
+    <string name="task_date_picker_title">选择任务日期</string>
+    <string name="task_signed_out_title">登录后查看您的任务</string>
+    <string name="task_signed_out_hint">任务与监测计划需要登录后同步</string>
+    <string name="task_go_login">立即登录</string>
+    <string name="task_config_missing">尚未配置服务器与密钥，无法加载任务</string>
+    <string name="task_go_config">去配置</string>
+    <string name="task_no_project_title">尚未选择项目</string>
+    <string name="task_no_project_hint">选择项目后即可查看对应任务</string>
+    <string name="task_go_home">去首页切换项目</string>
+    <string name="task_retry">重试</string>
+    <string name="task_empty_my">该日期下暂无任务，可点击日期筛选换一天</string>
+    <string name="task_empty_plan">当前项目暂无监测计划任务</string>
+    <string name="task_empty_refresh">刷新</string>
+    <string name="task_status_not_started">未开始</string>
+    <string name="task_status_in_progress">进行中</string>
+    <string name="task_status_completed">已完成</string>
+    <string name="task_item_period_fmt">周期：%1$s ~ %2$s</string>
+    <string name="task_item_degree_fmt">完成度：%1$s</string>
+    <string name="task_detail_title">任务详情</string>
+    <string name="task_detail_section_identity">任务标识</string>
+    <string name="task_detail_section_project">项目与工点</string>
+    <string name="task_detail_section_plan">监测计划</string>
+    <string name="task_detail_section_group">测组与完成度</string>
+    <string name="task_detail_section_working">施工工况</string>
+    <string name="task_detail_label_code">任务编号</string>
+    <string name="task_detail_label_mold">类型</string>
+    <string name="task_detail_label_monitoring">监测类型</string>
+    <string name="task_detail_label_duty">责任人</string>
+    <string name="task_detail_label_project">项目</string>
+    <string name="task_detail_label_work_point">工点</string>
+    <string name="task_detail_label_plan_id">计划 ID</string>
+    <string name="task_detail_label_period">期数</string>
+    <string name="task_detail_label_period_fmt">第 %1$s 期</string>
+    <string name="task_detail_label_begin">开始时间</string>
+    <string name="task_detail_label_end">截止时间</string>
+    <string name="task_detail_label_group">测组 ID</string>
+    <string name="task_detail_label_degree">完成度</string>
+    <string name="task_detail_unknown">-</string>
+
     <!-- 通用 -->
     <string name="action_save">保存</string>
 
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 911078a..18b3244 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -17,4 +17,44 @@
         <item name="windowSplashScreenAnimatedIcon">@drawable/ic_launcher_foreground</item>
         <item name="postSplashScreenTheme">@style/Theme.SteCmd</item>
     </style>
+
+    <!-- 任务详情分区卡片（M3-03） -->
+    <style name="TaskDetailCard">
+        <item name="android:layout_marginTop">12dp</item>
+    </style>
+
+    <style name="TaskDetailCardContent">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:orientation">vertical</item>
+        <item name="android:padding">16dp</item>
+    </style>
+
+    <style name="TaskDetailSectionTitle">
+        <item name="android:textColor">?attr/colorOnSurface</item>
+        <item name="android:textSize">15sp</item>
+        <item name="android:textStyle">bold</item>
+        <item name="android:layout_marginBottom">8dp</item>
+    </style>
+
+    <style name="TaskDetailRow">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:orientation">horizontal</item>
+        <item name="android:gravity">center_vertical</item>
+        <item name="android:layout_marginTop">6dp</item>
+    </style>
+
+    <style name="TaskDetailLabel">
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:alpha">0.6</item>
+        <item name="android:textSize">13sp</item>
+        <item name="android:layout_marginEnd">12dp</item>
+    </style>
+
+    <style name="TaskDetailValue">
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:textColor">?attr/colorOnSurface</item>
+        <item name="android:textSize">14sp</item>
+    </style>
 </resources>
diff --git a/core/network/src/main/kotlin/com/stec/cmd/core/network/NetworkModule.kt b/core/network/src/main/kotlin/com/stec/cmd/core/network/NetworkModule.kt
index 4a7964d..7192c2f 100644
--- a/core/network/src/main/kotlin/com/stec/cmd/core/network/NetworkModule.kt
+++ b/core/network/src/main/kotlin/com/stec/cmd/core/network/NetworkModule.kt
@@ -2,6 +2,7 @@ package com.stec.cmd.core.network
 
 import com.stec.cmd.core.network.api.AuthApi
 import com.stec.cmd.core.network.api.ProjectApi
+import com.stec.cmd.core.network.api.TaskApi
 import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
@@ -78,6 +79,11 @@ object NetworkModule {
     @Singleton
     fun provideProjectApi(retrofit: Retrofit): ProjectApi = retrofit.create(ProjectApi::class.java)
 
+    /** 任务接口（M3，2.6/2.7）。 */
+    @Provides
+    @Singleton
+    fun provideTaskApi(retrofit: Retrofit): TaskApi = retrofit.create(TaskApi::class.java)
+
     /** 仅满足 Retrofit 构造约束；真实地址请求期经 DynamicBaseUrlInterceptor 改写。 */
     private const val PLACEHOLDER_BASE_URL = "https://placeholder.stec.invalid/"
 
diff --git a/core/network/src/main/kotlin/com/stec/cmd/core/network/api/TaskApi.kt b/core/network/src/main/kotlin/com/stec/cmd/core/network/api/TaskApi.kt
new file mode 100644
index 0000000..5677c02
--- /dev/null
+++ b/core/network/src/main/kotlin/com/stec/cmd/core/network/api/TaskApi.kt
@@ -0,0 +1,52 @@
+package com.stec.cmd.core.network.api
+
+import com.stec.cmd.core.network.ApiEnvelope
+import kotlinx.serialization.json.JsonElement
+import retrofit2.http.GET
+import retrofit2.http.Query
+
+/**
+ * 任务接口（接口管理规范 V4.5 · 测试环境 https://jcd.stec.p-q.co）：
+ * - 2.6 获取 APP 端任务列表（M3-01/03/04/05）
+ * - 2.7 获取项目当前监测计划的任务列表（M3-02/03/04/05）
+ *
+ * 三要素请求头（SecretKey/SystemCode/Token）由 AuthInterceptor 统一注入。
+ *
+ * 契约宽容：文档约定 data 为 {"TaskList":[…]}；与项目列表（任务 M2 先例）同理
+ * 保留形态偏差可能，故以 [JsonElement] 宽容承载，
+ * 由 app 层 TaskRepository.taskListFromData 归一提取。
+ */
+interface TaskApi {
+
+    /**
+     * 2.6 APP 端任务列表：一个项目的一个监测计划的一个测组为一条任务。
+     * [planDate] 必填（yyyy-MM-dd）；[projectId]/[workPointId] 传 null 时
+     * Retrofit 省略参数（空=本人全部项目当日任务）。
+     */
+    @GET(PATH_GET_USER_PLAN_GROUP)
+    suspend fun getUserPlanGroup(
+        @Query(QUERY_PROJECT_ID) projectId: String? = null,
+        @Query(QUERY_PLAN_DATE) planDate: String,
+        @Query(QUERY_WORK_POINT_ID) workPointId: String? = null,
+    ): ApiEnvelope<JsonElement>
+
+    /**
+     * 2.7 项目当前监测计划任务列表（离当前时间最近的一个监测计划）。
+     * [projectId] 传 null 时返回所有「进行中」项目的计划任务。
+     */
+    @GET(PATH_GET_PLAN_GROUP)
+    suspend fun getPlanGroup(
+        @Query(QUERY_PROJECT_ID) projectId: String? = null,
+    ): ApiEnvelope<JsonElement>
+
+    companion object {
+        // ---- 接口管理规范 V4.5 · 章节 2.1 所有 API 目录 ----
+        const val PATH_GET_USER_PLAN_GROUP = "OutWebApi/api/GetUserPlanGroup"
+        const val PATH_GET_PLAN_GROUP = "OutWebApi/api/GetPlanGroup"
+
+        /** 查询参数名（2.6/2.7 共用 ProjectID；PlanDate 为 2.6 必填）。 */
+        const val QUERY_PROJECT_ID = "ProjectID"
+        const val QUERY_PLAN_DATE = "PlanDate"
+        const val QUERY_WORK_POINT_ID = "WorkPointID"
+    }
+}
diff --git a/core/network/src/main/kotlin/com/stec/cmd/core/network/api/TaskModels.kt b/core/network/src/main/kotlin/com/stec/cmd/core/network/api/TaskModels.kt
new file mode 100644
index 0000000..91281d5
--- /dev/null
+++ b/core/network/src/main/kotlin/com/stec/cmd/core/network/api/TaskModels.kt
@@ -0,0 +1,51 @@
+package com.stec.cmd.core.network.api
+
+import kotlinx.serialization.Serializable
+
+/**
+ * 任务 DTO（接口管理规范 V4.5 · 2.6/2.7 返回值示例，一条任务 = 一个测组）。
+ *
+ * 字段名与平台契约一致（PascalCase）；文档未给类型，全 `String?` 容错，
+ * 响应侧配合 Json.ignoreUnknownKeys 容忍字段演进。
+ * 字段来源差异：[PlanNum] 仅 2.6、[PeriodsNum] 仅 2.7（同为期数）、
+ * [WorkPointID]/[WorkPointName] 仅 2.6。
+ */
+@Serializable
+data class TaskItem(
+    /** 项目简称。 */
+    val SimpleName: String? = null,
+    /** 任务编号：项目编号-计划期数-测组编号。 */
+    val TaskCode: String? = null,
+    /** 项目 ID。 */
+    val ProjectID: String? = null,
+    /** 监测计划 ID。 */
+    val PlanID: String? = null,
+    /** 期数（2.6：计划对应期数值）。 */
+    val PlanNum: String? = null,
+    /** 期数（2.7 字段名）。 */
+    val PeriodsNum: String? = null,
+    /** 施工工况。 */
+    val Working: String? = null,
+    /** 类型：常规 | 加测。 */
+    val Mold: String? = null,
+    /** 责任人。 */
+    val DutyName: String? = null,
+    /** 测组 ID。 */
+    val GroupID: String? = null,
+    /** 工点 ID（仅 2.6）。 */
+    val WorkPointID: String? = null,
+    /** 工点名称（仅 2.6）。 */
+    val WorkPointName: String? = null,
+    /** 监测类型：水平位移/竖向位移/测斜/收敛/水位/轴力。 */
+    val MonitoringType: String? = null,
+    /** 计划周期开始（上一期计划截止时间，yyyy-MM-dd HH:mm）。 */
+    val BeginTime: String? = null,
+    /** 计划周期截止（yyyy-MM-dd HH:mm）。 */
+    val EndTime: String? = null,
+    /** 完成度：本测组已上传点数/测组总点数。 */
+    val CompleteDegree: String? = null,
+) {
+    /** 归一期数：2.6 取 PlanNum，2.7 取 PeriodsNum。 */
+    val period: String?
+        get() = PlanNum?.takeIf { it.isNotBlank() } ?: PeriodsNum?.takeIf { it.isNotBlank() }
+}