feat: 复刻小程序四大主页面与底部导航（UI 优先，本地 mock）

core/model/src/main/kotlin/com/mingyuan/android_client/core/model/CheckinModels.kt

@@ -0,0 +1,34 @@
+package com.mingyuan.android_client.core.model
+
+enum class CheckinStatus(val label: String) {
+    NORMAL("正常"),
+    LATE("迟到"),
+    LEAVE("请假"),
+    ABSENT("不参加讨论"),
+    EARLY_LEAVE("早退"),
+}
+
+data class GroupMember(
+    val id: String,
+    val name: String,
+    val checkedIn: Boolean,
+    val checkinTime: String?,
+    val status: CheckinStatus?,
+)
+
+data class PersonalCheckinRecord(
+    val date: String,
+    val status: CheckinStatus,
+    val time: String,
+)
+
+data class CheckinRecord(
+    val classDate: String,
+    val weekday: String,
+    val dayNum: Int,
+    val checked: Boolean,
+    val status: CheckinStatus?,
+    val groupName: String,
+    val groupMembers: List<GroupMember>,
+    val personalHistory: List<PersonalCheckinRecord>,
+)

core/model/src/main/kotlin/com/mingyuan/android_client/core/model/HomeModels.kt

@@ -0,0 +1,28 @@
+package com.mingyuan.android_client.core.model
+
+enum class ModuleDestination {
+    CHECKIN,
+    PLAN,
+    ABOUT,
+}
+
+data class HomeModule(
+    val id: String,
+    val emoji: String,
+    val title: String,
+    val description: String,
+    val destination: ModuleDestination,
+)
+
+data class IntroCard(
+    val title: String,
+    val body: String,
+)
+
+data class HomeData(
+    val greeting: String,
+    val displayName: String,
+    val encouragement: String,
+    val modules: List<HomeModule>,
+    val intros: List<IntroCard>,
+)

core/model/src/main/kotlin/com/mingyuan/android_client/core/model/PlanModels.kt

@@ -0,0 +1,48 @@
+package com.mingyuan.android_client.core.model
+
+enum class PlanType(val label: String) {
+    WEEKLY("周计划"),
+    MONTHLY("月计划"),
+    YEARLY("年计划"),
+}
+
+data class MyPlanRecord(
+    val status: String,
+    val submittedTime: String,
+    val content: String,
+    val attachments: List<String>,
+)
+
+data class PlanMember(
+    val id: String,
+    val name: String,
+    val filled: Boolean,
+)
+
+data class PlanGroup(
+    val id: String,
+    val name: String,
+    val checkedCount: Int,
+    val memberCount: Int,
+    val members: List<PlanMember>,
+)
+
+data class PlanRecord(
+    val type: PlanType,
+    val periodKey: String,
+    val canSubmit: Boolean,
+    val message: String?,
+    val myChecked: Boolean,
+    val myRecord: MyPlanRecord?,
+    val groups: List<PlanGroup>,
+    val unassignedCount: Int,
+)
+
+data class PlanSubmitData(
+    val content: String,
+    val attachments: List<String>,
+    val checked: Boolean,
+    val canSubmit: Boolean,
+    val message: String?,
+    val history: List<MyPlanRecord>,
+)

core/model/src/main/kotlin/com/mingyuan/android_client/core/model/ProfileModels.kt

@@ -0,0 +1,19 @@
+package com.mingyuan.android_client.core.model
+
+data class ClassGroup(
+    val period: String,
+    val group: String,
+    val role: String,
+)
+
+data class UserProfile(
+    val displayName: String,
+    val name: String,
+    val studentId: String,
+    val phone: String?,
+    val role: String,
+    val group: String?,
+    val loginType: String,
+    val avatarUrl: String?,
+    val classGroups: List<ClassGroup>,
+)