feat(server): integrate AppState, ModuleRegistry, health check, and graceful shutdown

- Add AppState with DB, Config, EventBus, ModuleRegistry via Axum State
- ModuleRegistry now uses Arc for Clone support, builder-pattern register()
- Add /api/v1/health endpoint returning status, version, registered modules
- Add graceful shutdown on CTRL+C / SIGTERM
- erp-common utils: ID generation, timestamp helpers, code generator with tests
- Config structs now derive Clone for state sharing
- Update wiki to reflect Phase 1 completion

crates/erp-core/src/module.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 use axum::Router;
 use uuid::Uuid;
 
@@ -38,19 +40,25 @@ pub trait ErpModule: Send + Sync {
     }
 }
 
-/// 模块注册器
+/// 模块注册器 — 用 Arc 包装使其可 Clone（用于 Axum State）
+#[derive(Clone, Default)]
 pub struct ModuleRegistry {
-    modules: Vec<Box<dyn ErpModule>>,
+    modules: Arc<Vec<Arc<dyn ErpModule>>>,
 }
 
 impl ModuleRegistry {
     pub fn new() -> Self {
-        Self { modules: vec![] }
+        Self {
+            modules: Arc::new(vec![]),
+        }
     }
 
-    pub fn register(&mut self, module: Box<dyn ErpModule>) {
+    pub fn register(mut self, module: impl ErpModule + 'static) -> Self {
         tracing::info!(module = module.name(), version = module.version(), "Module registered");
-        self.modules.push(module);
+        let mut modules = (*self.modules).clone();
+        modules.push(Arc::new(module));
+        self.modules = Arc::new(modules);
+        self
     }
 
     pub fn build_router(&self, base: Router) -> Router {
@@ -60,12 +68,12 @@ impl ModuleRegistry {
     }
 
     pub fn register_handlers(&self, bus: &EventBus) {
-        for module in &self.modules {
+        for module in self.modules.iter() {
             module.register_event_handlers(bus);
         }
     }
 
-    pub fn modules(&self) -> &[Box<dyn ErpModule>] {
+    pub fn modules(&self) -> &[Arc<dyn ErpModule>] {
         &self.modules
     }
 }