feat: Week 4 收尾 + 架构治理 — 搜索/家长中心/Feature Flag/Docker/环境配置

架构治理:
- Feature Flag 落地: Cargo.toml [features] default=["diary"] + main.rs cfg 条件编译
- 环境配置统一: AppConfig 类 + --dart-define 注入 + SSE 端口 8080→3000 修复

搜索替代方案 (无 FTS):
- SearchBloc + 标签/心情筛选接入后端 API
- JournalRepository 扩展 mood/tag 筛选参数
- 搜索页 UI 接入实际数据（替换占位文本）

家长中心最小集 (PIPL 合规):
- 后端: parent_service (绑定/查看/导出/删除/解绑) + parent_handler (6 个 API 端点)
- 前端: ParentBloc + ParentPage 功能完整实现
- 绑定孩子、只读查看日记、导出数据、删除数据、解绑

Docker 部署:
- verify.sh 健康检查脚本 (Axum/PG/Redis/OpenAPI 四项检查)

测试修复:
- home_bloc_test / calendar_bloc_test 适配 JournalRepository 新参数

验证: flutter test 84/84 pass, cargo test 76/76 pass, cargo check pass

crates/erp-server/src/main.rs

@@ -326,7 +326,9 @@ async fn main() -> anyhow::Result<()> {
     );
 
     // Initialize diary module (暖记业务)
+    #[cfg(feature = "diary")]
     let diary_module = erp_diary::DiaryModule;
+    #[cfg(feature = "diary")]
     tracing::info!(
         module = diary_module.name(),
         version = diary_module.version(),
@@ -338,8 +340,10 @@ async fn main() -> anyhow::Result<()> {
         .register(auth_module)
         .register(config_module)
         .register(workflow_module)
-        .register(message_module)
-        .register(diary_module);
+        .register(message_module);
+
+    #[cfg(feature = "diary")]
+    let registry = registry.register(diary_module);
     tracing::info!(
         module_count = registry.modules().len(),
         "Modules registered"
@@ -501,8 +505,12 @@ async fn main() -> anyhow::Result<()> {
         .merge(erp_config::ConfigModule::protected_routes())
         .merge(erp_workflow::WorkflowModule::protected_routes())
         .merge(erp_message::MessageModule::protected_routes())
-        .merge(erp_plugin::module::PluginModule::protected_routes())
-        .merge(erp_diary::DiaryModule::protected_routes())
+        .merge(erp_plugin::module::PluginModule::protected_routes());
+
+    #[cfg(feature = "diary")]
+    let protected_routes = protected_routes.merge(erp_diary::DiaryModule::protected_routes());
+
+    let protected_routes = protected_routes
         .merge(handlers::audit_log::audit_log_router())
         .route(
             "/upload",

crates/erp-server/src/state.rs

@@ -110,6 +110,7 @@ impl FromRef<AppState> for erp_plugin::state::PluginState {
 }
 
 /// Allow erp-diary handlers to extract their required state.
+#[cfg(feature = "diary")]
 impl FromRef<AppState> for erp_diary::DiaryState {
     fn from_ref(state: &AppState) -> Self {
         Self {