feat: initialize Nuanji (Warm Notes) project

- Base platform from base.git (ERP base: auth, core, config, message, workflow, plugin)
- Created erp-diary module skeleton (lib.rs, dto.rs, error.rs, event.rs, state.rs)
- Integrated erp-diary into workspace and erp-server
- Added DiaryModule registration in main.rs
- Added DiaryState FromRef in state.rs
- Diary routes mounted (empty routes, ready for implementation)
- Product design spec v1.2 preserved in docs/
- Implementation plan preserved in plans/

Cargo check: OK
Cargo test: OK (78+ base tests passing)

crates/erp-diary/src/dto.rs

@@ -0,0 +1,125 @@
+// erp-diary 数据传输对象 (DTO)
+
+use serde::{Deserialize, Serialize};
+use utoipa::ToSchema;
+
+/// 日记心情枚举
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+#[serde(rename_all = "lowercase")]
+pub enum Mood {
+    Happy,
+    Calm,
+    Sad,
+    Angry,
+    Thinking,
+}
+
+/// 天气枚举
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+#[serde(rename_all = "lowercase")]
+pub enum Weather {
+    Sunny,
+    Cloudy,
+    Rainy,
+    Snowy,
+    Windy,
+}
+
+/// 创建日记请求
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct CreateJournalReq {
+    pub title: String,
+    pub date: chrono::NaiveDate,
+    pub mood: Mood,
+    pub weather: Weather,
+    pub tags: Vec<String>,
+    pub is_private: bool,
+    pub class_id: Option<uuid::Uuid>,
+    pub assigned_topic_id: Option<uuid::Uuid>,
+}
+
+/// 更新日记请求
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct UpdateJournalReq {
+    pub title: Option<String>,
+    pub mood: Option<Mood>,
+    pub weather: Option<Weather>,
+    pub tags: Option<Vec<String>>,
+    pub is_private: Option<bool>,
+    pub shared_to_class: Option<bool>,
+    pub version: i32,
+}
+
+/// 日记响应
+#[derive(Debug, Serialize, ToSchema)]
+pub struct JournalResp {
+    pub id: uuid::Uuid,
+    pub author_id: uuid::Uuid,
+    pub class_id: Option<uuid::Uuid>,
+    pub title: String,
+    pub date: chrono::NaiveDate,
+    pub mood: Mood,
+    pub weather: Weather,
+    pub tags: Vec<String>,
+    pub is_private: bool,
+    pub shared_to_class: bool,
+    pub version: i32,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    pub updated_at: chrono::DateTime<chrono::Utc>,
+}
+
+/// 创建班级请求
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct CreateClassReq {
+    pub name: String,
+    pub school_name: Option<String>,
+}
+
+/// 加入班级请求
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct JoinClassReq {
+    pub class_code: String,
+}
+
+/// 班级响应
+#[derive(Debug, Serialize, ToSchema)]
+pub struct ClassResp {
+    pub id: uuid::Uuid,
+    pub name: String,
+    pub school_name: Option<String>,
+    pub teacher_id: uuid::Uuid,
+    pub class_code: String,
+    pub member_count: i32,
+    pub is_active: bool,
+}
+
+/// 同步请求
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct SyncReq {
+    pub last_sync_time: Option<chrono::DateTime<chrono::Utc>>,
+    pub changes: Vec<SyncChange>,
+}
+
+/// 同步变更条目
+#[derive(Debug, Deserialize, ToSchema)]
+pub enum SyncChange {
+    CreateJournal { data: serde_json::Value },
+    UpdateJournal { id: uuid::Uuid, version: i32, data: serde_json::Value },
+    DeleteJournal { id: uuid::Uuid, version: i32 },
+}
+
+/// 同步响应
+#[derive(Debug, Serialize, ToSchema)]
+pub struct SyncResp {
+    pub server_changes: Vec<serde_json::Value>,
+    pub conflicts: Vec<ConflictInfo>,
+    pub sync_time: chrono::DateTime<chrono::Utc>,
+}
+
+/// 冲突信息
+#[derive(Debug, Serialize, ToSchema)]
+pub struct ConflictInfo {
+    pub journal_id: uuid::Uuid,
+    pub local_version: i32,
+    pub server_version: i32,
+}

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

@@ -0,0 +1,2 @@
+// erp-diary SeaORM 实体占位
+// 后续 Phase B1 会定义完整的 ~15 个实体

crates/erp-diary/src/error.rs

@@ -0,0 +1,75 @@
+// erp-diary 错误类型
+
+use axum::http::StatusCode;
+use axum::response::{IntoResponse, Response};
+use serde::Serialize;
+
+#[derive(Debug, thiserror::Error)]
+pub enum DiaryError {
+    #[error("日记未找到: {0}")]
+    NotFound(String),
+
+    #[error("版本冲突: 本地版本 {local}, 服务端版本 {server}")]
+    VersionConflict { local: i32, server: i32 },
+
+    #[error("班级码无效")]
+    InvalidClassCode,
+
+    #[error("班级码已过期")]
+    ClassCodeExpired,
+
+    #[error("班级码尝试次数过多，请 {lockout_minutes} 分钟后重试")]
+    ClassCodeLocked { lockout_minutes: u32 },
+
+    #[error("无权限执行此操作")]
+    Forbidden,
+
+    #[error("内容安全检查未通过")]
+    ContentSafetyViolation,
+
+    #[error("同步失败: {0}")]
+    SyncFailed(String),
+
+    #[error("{0}")]
+    BadRequest(String),
+
+    #[error("内部错误: {0}")]
+    Internal(String),
+}
+
+#[derive(Serialize)]
+struct ErrorBody {
+    error: String,
+    message: String,
+}
+
+impl IntoResponse for DiaryError {
+    fn into_response(self) -> Response {
+        let (status, message) = match &self {
+            DiaryError::NotFound(_) => (StatusCode::NOT_FOUND, self.to_string()),
+            DiaryError::VersionConflict { .. } => (StatusCode::CONFLICT, self.to_string()),
+            DiaryError::InvalidClassCode | DiaryError::ClassCodeExpired => {
+                (StatusCode::BAD_REQUEST, self.to_string())
+            }
+            DiaryError::ClassCodeLocked { .. } => (StatusCode::TOO_MANY_REQUESTS, self.to_string()),
+            DiaryError::Forbidden => (StatusCode::FORBIDDEN, self.to_string()),
+            DiaryError::ContentSafetyViolation => (StatusCode::BAD_REQUEST, self.to_string()),
+            DiaryError::SyncFailed(_) => (StatusCode::INTERNAL_SERVER_ERROR, self.to_string()),
+            DiaryError::BadRequest(_) => (StatusCode::BAD_REQUEST, self.to_string()),
+            DiaryError::Internal(_) => (StatusCode::INTERNAL_SERVER_ERROR, self.to_string()),
+        };
+
+        let body = ErrorBody {
+            error: format!("diary.{}", status.as_u16()),
+            message,
+        };
+
+        (status, axum::Json(body)).into_response()
+    }
+}
+
+impl From<sea_orm::DbErr> for DiaryError {
+    fn from(err: sea_orm::DbErr) -> Self {
+        DiaryError::Internal(err.to_string())
+    }
+}

crates/erp-diary/src/event.rs

@@ -0,0 +1,61 @@
+// erp-diary 事件定义
+
+/// 日记模块领域事件
+pub enum DiaryEvent {
+    /// 日记创建
+    JournalCreated {
+        journal_id: uuid::Uuid,
+        author_id: uuid::Uuid,
+        class_id: Option<uuid::Uuid>,
+    },
+    /// 日记更新
+    JournalUpdated {
+        journal_id: uuid::Uuid,
+        author_id: uuid::Uuid,
+        version: i32,
+    },
+    /// 日记删除
+    JournalDeleted {
+        journal_id: uuid::Uuid,
+        author_id: uuid::Uuid,
+    },
+    /// 日记分享到班级
+    JournalShared {
+        journal_id: uuid::Uuid,
+        author_id: uuid::Uuid,
+        class_id: uuid::Uuid,
+    },
+    /// 班级创建
+    ClassCreated {
+        class_id: uuid::Uuid,
+        teacher_id: uuid::Uuid,
+    },
+    /// 学生加入班级
+    StudentJoinedClass {
+        class_id: uuid::Uuid,
+        student_id: uuid::Uuid,
+    },
+    /// 老师布置主题
+    TopicAssigned {
+        topic_id: uuid::Uuid,
+        class_id: uuid::Uuid,
+        teacher_id: uuid::Uuid,
+    },
+    /// 老师点评
+    CommentCreated {
+        comment_id: uuid::Uuid,
+        journal_id: uuid::Uuid,
+        teacher_id: uuid::Uuid,
+        student_id: uuid::Uuid,
+    },
+    /// 家长绑定孩子
+    ParentBound {
+        parent_id: uuid::Uuid,
+        child_id: uuid::Uuid,
+    },
+    /// 成就解锁
+    AchievementUnlocked {
+        user_id: uuid::Uuid,
+        achievement_id: String,
+    },
+}

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

@@ -0,0 +1,2 @@
+// erp-diary API 处理器占位
+// 后续 Phase B2-B7 会实现 ~10 个处理器

crates/erp-diary/src/lib.rs

@@ -0,0 +1,112 @@
+pub mod entity;
+pub mod service;
+pub mod handler;
+pub mod dto;
+pub mod error;
+pub mod event;
+pub mod state;
+
+pub use state::DiaryState;
+
+use erp_core::module::ErpModule;
+
+/// 暖记日记业务模块
+pub struct DiaryModule;
+
+impl ErpModule for DiaryModule {
+    fn name(&self) -> &str {
+        "diary"
+    }
+
+    fn id(&self) -> &str {
+        "erp-diary"
+    }
+
+    fn version(&self) -> &str {
+        env!("CARGO_PKG_VERSION")
+    }
+
+    fn module_type(&self) -> erp_core::module::ModuleType {
+        erp_core::module::ModuleType::Builtin
+    }
+
+    fn dependencies(&self) -> Vec<&str> {
+        vec!["erp-auth", "erp-core"]
+    }
+
+    fn permissions(&self) -> Vec<erp_core::module::PermissionDescriptor> {
+        vec![
+            erp_core::module::PermissionDescriptor {
+                code: "diary.journal.create".into(),
+                name: "创建日记".into(),
+                module: "diary".into(),
+                description: "允许创建日记条目".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.journal.read".into(),
+                name: "查看日记".into(),
+                module: "diary".into(),
+                description: "允许查看日记条目".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.journal.update".into(),
+                name: "编辑日记".into(),
+                module: "diary".into(),
+                description: "允许编辑日记条目".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.journal.delete".into(),
+                name: "删除日记".into(),
+                module: "diary".into(),
+                description: "允许删除日记条目".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.class.manage".into(),
+                name: "管理班级".into(),
+                module: "diary".into(),
+                description: "允许创建和管理班级".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.topic.assign".into(),
+                name: "布置主题".into(),
+                module: "diary".into(),
+                description: "允许老师布置日记主题".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.comment.write".into(),
+                name: "写评语".into(),
+                module: "diary".into(),
+                description: "允许老师点评日记".into(),
+            },
+            erp_core::module::PermissionDescriptor {
+                code: "diary.parent.bind".into(),
+                name: "家长绑定".into(),
+                module: "diary".into(),
+                description: "允许家长绑定孩子账号".into(),
+            },
+        ]
+    }
+
+    fn as_any(&self) -> &dyn std::any::Any {
+        self
+    }
+}
+
+impl DiaryModule {
+    /// 公开路由（无需认证）
+    pub fn public_routes<S>() -> axum::Router<S>
+    where
+        S: Clone + Send + Sync + 'static,
+    {
+        axum::Router::new()
+    }
+
+    /// 受保护路由（需要 JWT 认证）
+    pub fn protected_routes<S>() -> axum::Router<S>
+    where
+        crate::state::DiaryState: axum::extract::FromRef<S>,
+        S: Clone + Send + Sync + 'static,
+    {
+        axum::Router::new()
+    }
+}

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

@@ -0,0 +1,2 @@
+// erp-diary 业务服务占位
+// 后续 Phase B2-B6 会实现 ~12 个服务

crates/erp-diary/src/state.rs

@@ -0,0 +1,13 @@
+// erp-diary State 定义
+
+use sea_orm::DatabaseConnection;
+use erp_core::crypto::PiiCrypto;
+use erp_core::events::EventBus;
+
+/// 暖记模块状态，通过 Axum State 提取
+#[derive(Clone)]
+pub struct DiaryState {
+    pub db: DatabaseConnection,
+    pub event_bus: EventBus,
+    pub crypto: PiiCrypto,
+}