feat(diary): 添加 15 个 SeaORM 实体和数据库迁移 (Phase B1)

实体:
- journal_entry: 日记核心表 (心情/天气/标签/版本)
- journal_element: 日记元素 (文字/图片/贴纸/手写/胶带)
- handwriting_stroke: 手写笔画 (独立大字段表)
- school_class: 班级 (6位码/过期控制)
- class_member: 班级成员 (复合PK)
- topic_assignment: 主题布置
- comment: 老师点评
- sticker_pack + sticker: 贴纸包和贴纸
- template: 日记模板
- achievement + user_achievement: 成就系统
- parent_child_binding: 家长-孩子绑定 (PIPL)
- teacher_profile: 老师档案
- user_settings: 用户设置

迁移 (000170-000184):
- 15 个建表迁移 + 索引 + RLS 策略 + 种子数据
- 所有表含 tenant_id 多租户隔离
- 软删除 + 乐观锁版本号
- 外键级联删除
- 暖记权限注册到基座 permissions 表

验证: cargo check 通过, 425 个测试全通过

crates/erp-diary/src/entity/achievement.rs

@@ -0,0 +1,50 @@
+// 成就定义 — 可解锁的成就徽章
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "achievements")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 成就编码（唯一标识，如 "first_diary", "streak_7"）
+    pub code: String,
+    /// 成就名称
+    pub name: String,
+    /// 成就描述
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub description: Option<String>,
+    /// 图标 URL 或 emoji
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub icon: Option<String>,
+    /// 分类（writing/social/collection/special）
+    pub category: String,
+    /// 解锁条件 (JSONB: { type, threshold, ... })
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub condition: Option<serde_json::Value>,
+    /// 排序权重
+    pub sort_order: i32,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(has_many = "super::user_achievement::Entity")]
+    UserAchievement,
+}
+
+impl Related<super::user_achievement::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::UserAchievement.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/class_member.rs

@@ -0,0 +1,49 @@
+// 班级成员 — 复合主键 (class_id + user_id)
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "class_members")]
+pub struct Model {
+    /// 班级 ID（复合主键之一）
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub class_id: Uuid,
+    /// 用户 ID（复合主键之一）
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub user_id: Uuid,
+    pub tenant_id: Uuid,
+    /// 成员角色（student/teacher）
+    pub role: String,
+    /// 班级内昵称
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub nickname: Option<String>,
+    /// 加入时间
+    pub joined_at: DateTimeUtc,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::school_class::Entity",
+        from = "Column::ClassId",
+        to = "super::school_class::Column::Id",
+        on_delete = "Cascade"
+    )]
+    SchoolClass,
+}
+
+impl Related<super::school_class::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::SchoolClass.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/comment.rs

@@ -0,0 +1,44 @@
+// 老师点评 — 老师对学生日记的评语
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "comments")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 被点评的日记
+    pub journal_id: Uuid,
+    /// 点评者（老师）ID
+    pub author_id: Uuid,
+    /// 评语内容
+    pub content: String,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::journal_entry::Entity",
+        from = "Column::JournalId",
+        to = "super::journal_entry::Column::Id",
+        on_delete = "Cascade"
+    )]
+    JournalEntry,
+}
+
+impl Related<super::journal_entry::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::JournalEntry.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/handwriting_stroke.rs

@@ -0,0 +1,79 @@
+// 手写笔画 — 独立表，大字段隔离，延迟加载
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+/// 画笔类型
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum BrushType {
+    /// 钢笔（压感）
+    Pen,
+    /// 铅笔（纹理）
+    Pencil,
+    /// 马克笔（半透明）
+    Marker,
+    /// 橡皮擦
+    Eraser,
+}
+
+impl std::fmt::Display for BrushType {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            BrushType::Pen => write!(f, "pen"),
+            BrushType::Pencil => write!(f, "pencil"),
+            BrushType::Marker => write!(f, "marker"),
+            BrushType::Eraser => write!(f, "eraser"),
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "handwriting_strokes")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 所属日记元素
+    pub element_id: Uuid,
+    /// 点坐标序列 (JSONB: [{x, y}, ...])
+    pub points: serde_json::Value,
+    /// 压力值序列 (JSONB: [0.0-1.0, ...])
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub pressures: Option<serde_json::Value>,
+    /// 时间戳序列 (JSONB: [ms, ...])
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub timestamps: Option<serde_json::Value>,
+    /// 笔画颜色 (hex)
+    pub color: String,
+    /// 笔画基础宽度
+    pub stroke_width: f64,
+    /// 画笔类型
+    pub brush_type: String,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::journal_element::Entity",
+        from = "Column::ElementId",
+        to = "super::journal_element::Column::Id",
+        on_delete = "Cascade"
+    )]
+    JournalElement,
+}
+
+impl Related<super::journal_element::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::JournalElement.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/journal_element.rs

@@ -0,0 +1,93 @@
+// 日记元素 — 手账页面中的文字/图片/贴纸/手写引用/胶带等元素
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+/// 元素类型枚举
+#[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
+pub enum ElementType {
+    /// 文本框
+    Text,
+    /// 图片
+    Image,
+    /// 贴纸
+    Sticker,
+    /// 手写引用（指向 handwriting_stroke）
+    HandwritingRef,
+    /// 和纸胶带
+    Tape,
+}
+
+impl std::fmt::Display for ElementType {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            ElementType::Text => write!(f, "text"),
+            ElementType::Image => write!(f, "image"),
+            ElementType::Sticker => write!(f, "sticker"),
+            ElementType::HandwritingRef => write!(f, "handwriting_ref"),
+            ElementType::Tape => write!(f, "tape"),
+        }
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "journal_elements")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 所属日记
+    pub journal_id: Uuid,
+    /// 元素类型
+    pub element_type: String,
+    /// X 坐标位置
+    pub position_x: f64,
+    /// Y 坐标位置
+    pub position_y: f64,
+    /// 宽度
+    pub width: f64,
+    /// 高度
+    pub height: f64,
+    /// 旋转角度（度）
+    pub rotation: f64,
+    /// 层叠顺序
+    pub z_index: i32,
+    /// 元素内容（JSON: 文本内容/图片URL/贴纸ID等）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub content: Option<serde_json::Value>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::journal_entry::Entity",
+        from = "Column::JournalId",
+        to = "super::journal_entry::Column::Id",
+        on_delete = "Cascade"
+    )]
+    JournalEntry,
+    #[sea_orm(has_many = "super::handwriting_stroke::Entity")]
+    HandwritingStroke,
+}
+
+impl Related<super::journal_entry::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::JournalEntry.def()
+    }
+}
+
+impl Related<super::handwriting_stroke::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::HandwritingStroke.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/journal_entry.rs

@@ -0,0 +1,70 @@
+// 日记条目 — 暖记核心实体
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "journal_entries")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 日记作者
+    pub author_id: Uuid,
+    /// 所属班级（可选，独立用户可为空）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub class_id: Option<Uuid>,
+    /// 日记标题
+    pub title: String,
+    /// 日记日期
+    pub date: chrono::NaiveDate,
+    /// 心情
+    pub mood: String,
+    /// 天气
+    pub weather: String,
+    /// 标签（JSON 数组）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub tags: Option<serde_json::Value>,
+    /// 是否私密
+    pub is_private: bool,
+    /// 是否分享到班级
+    pub shared_to_class: bool,
+    /// 关联的主题布置（老师布置的主题）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub assigned_topic_id: Option<Uuid>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    /// 乐观锁版本号（同步冲突检测核心）
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(has_many = "super::journal_element::Entity")]
+    JournalElement,
+    #[sea_orm(
+        belongs_to = "super::school_class::Entity",
+        from = "Column::ClassId",
+        to = "super::school_class::Column::Id",
+        on_delete = "Cascade"
+    )]
+    SchoolClass,
+}
+
+impl Related<super::journal_element::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::JournalElement.def()
+    }
+}
+
+impl Related<super::school_class::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::SchoolClass.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/mod.rs

@@ -1,2 +1,17 @@
-// erp-diary SeaORM 实体占位
-// 后续 Phase B1 会定义完整的 ~15 个实体
+// erp-diary SeaORM 实体定义
+
+pub mod journal_entry;
+pub mod journal_element;
+pub mod handwriting_stroke;
+pub mod school_class;
+pub mod class_member;
+pub mod topic_assignment;
+pub mod comment;
+pub mod sticker_pack;
+pub mod sticker;
+pub mod template;
+pub mod achievement;
+pub mod user_achievement;
+pub mod parent_child_binding;
+pub mod teacher_profile;
+pub mod user_settings;

crates/erp-diary/src/entity/parent_child_binding.rs

@@ -0,0 +1,35 @@
+// 家长-孩子绑定 — PIPL 合规：未满 14 岁必须家长授权
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "parent_child_bindings")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 家长用户 ID
+    pub parent_id: Uuid,
+    /// 孩子用户 ID
+    pub child_id: Uuid,
+    /// 验证方式（qr/sms/manual）
+    pub verification_method: String,
+    /// 验证通过时间
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub verified_at: Option<DateTimeUtc>,
+    /// 绑定状态（pending/verified/revoked）
+    pub status: String,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/school_class.rs

@@ -0,0 +1,65 @@
+// 班级 — 老师创建，学生通过班级码加入
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "school_classes")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 班级名称
+    pub name: String,
+    /// 学校名称
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub school_name: Option<String>,
+    /// 创建者（老师）ID
+    pub teacher_id: Uuid,
+    /// 6 位班级码（字母数字混合，62^6 ≈ 568 亿种组合）
+    pub class_code: String,
+    /// 成员数量（缓存字段）
+    pub member_count: i32,
+    /// 是否激活
+    pub is_active: bool,
+    /// 班级码过期时间（学期结束自动失效）
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub expires_at: Option<DateTimeUtc>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(has_many = "super::class_member::Entity")]
+    ClassMember,
+    #[sea_orm(has_many = "super::topic_assignment::Entity")]
+    TopicAssignment,
+    #[sea_orm(has_many = "super::journal_entry::Entity")]
+    JournalEntry,
+}
+
+impl Related<super::class_member::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::ClassMember.def()
+    }
+}
+
+impl Related<super::topic_assignment::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::TopicAssignment.def()
+    }
+}
+
+impl Related<super::journal_entry::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::JournalEntry.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/sticker.rs

@@ -0,0 +1,50 @@
+// 贴纸 — 单个贴纸素材
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "stickers")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 所属贴纸包
+    pub pack_id: Uuid,
+    /// 贴纸名称
+    pub name: String,
+    /// 图片 URL
+    pub image_url: String,
+    /// 分类
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub category: Option<String>,
+    /// 标签 (JSON 数组)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub tags: Option<serde_json::Value>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::sticker_pack::Entity",
+        from = "Column::PackId",
+        to = "super::sticker_pack::Column::Id",
+        on_delete = "Cascade"
+    )]
+    StickerPack,
+}
+
+impl Related<super::sticker_pack::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::StickerPack.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/sticker_pack.rs

@@ -0,0 +1,48 @@
+// 贴纸包 — 一组贴纸的集合
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "sticker_packs")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 贴纸包名称
+    pub name: String,
+    /// 描述
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub description: Option<String>,
+    /// 缩略图 URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub thumbnail_url: Option<String>,
+    /// 是否免费
+    pub is_free: bool,
+    /// 价格（积分，0 = 免费）
+    pub price: i32,
+    /// 分类
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub category: Option<String>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(has_many = "super::sticker::Entity")]
+    Sticker,
+}
+
+impl Related<super::sticker::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Sticker.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/teacher_profile.rs

@@ -0,0 +1,35 @@
+// 老师档案 — 老师的扩展信息
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "teacher_profiles")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 关联的用户 ID
+    pub user_id: Uuid,
+    /// 学校名称
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub school_name: Option<String>,
+    /// 任教科目 (JSON 数组: ["语文", "数学"])
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub subjects: Option<serde_json::Value>,
+    /// 个人简介
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub bio: Option<String>,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/template.rs

@@ -0,0 +1,37 @@
+// 模板 — 日记模板（布局+预设元素）
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "templates")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 模板名称
+    pub name: String,
+    /// 缩略图 URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub thumbnail_url: Option<String>,
+    /// 布局数据 (JSONB: 元素定义数组)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub layout_data: Option<serde_json::Value>,
+    /// 分类
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub category: Option<String>,
+    /// 是否官方模板
+    pub is_official: bool,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/topic_assignment.rs

@@ -0,0 +1,52 @@
+// 主题布置 — 老师发布日记主题，学生提交对应日记
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "topic_assignments")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 所属班级
+    pub class_id: Uuid,
+    /// 布置主题的老师
+    pub teacher_id: Uuid,
+    /// 主题标题
+    pub title: String,
+    /// 主题描述/要求
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub description: Option<String>,
+    /// 截止日期
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub due_date: Option<chrono::NaiveDate>,
+    /// 是否激活
+    pub is_active: bool,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::school_class::Entity",
+        from = "Column::ClassId",
+        to = "super::school_class::Column::Id",
+        on_delete = "Cascade"
+    )]
+    SchoolClass,
+}
+
+impl Related<super::school_class::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::SchoolClass.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/user_achievement.rs

@@ -0,0 +1,44 @@
+// 用户成就 — 复合主键 (user_id + achievement_id)
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "user_achievements")]
+pub struct Model {
+    /// 用户 ID（复合主键之一）
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub user_id: Uuid,
+    /// 成就 ID（复合主键之一）
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub achievement_id: Uuid,
+    pub tenant_id: Uuid,
+    /// 解锁时间
+    pub unlocked_at: DateTimeUtc,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::achievement::Entity",
+        from = "Column::AchievementId",
+        to = "super::achievement::Column::Id",
+        on_delete = "Cascade"
+    )]
+    Achievement,
+}
+
+impl Related<super::achievement::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Achievement.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

crates/erp-diary/src/entity/user_settings.rs

@@ -0,0 +1,28 @@
+// 用户设置 — 个性化配置
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "user_settings")]
+pub struct Model {
+    #[sea_orm(primary_key, auto_increment = false)]
+    pub id: Uuid,
+    pub tenant_id: Uuid,
+    /// 关联的用户 ID
+    pub user_id: Uuid,
+    /// 设置数据 (JSONB: { theme, fontSize, defaultBrush, ... })
+    pub settings: serde_json::Value,
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    pub created_by: Uuid,
+    pub updated_by: Uuid,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub deleted_at: Option<DateTimeUtc>,
+    pub version: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+impl ActiveModelBehavior for ActiveModel {}