feat: port el-ui vessels — rename crates→vessels, add El source + manifests

ui/vessels/el-services/src/registry.rs

@@ -0,0 +1,59 @@
+//! Service registry — the global lookup table for service proxies.
+
+use crate::{proxy::ServiceProxy, ServiceError, ServiceResult};
+use std::collections::HashMap;
+use std::sync::{Arc, RwLock};
+
+/// Global registry of all service proxies.
+///
+/// The framework maintains one registry per application. At startup,
+/// all services are registered with their configured bindings.
+/// Components call `registry.get("UserService")` to get the proxy.
+#[derive(Default)]
+pub struct ServiceRegistry {
+    services: RwLock<HashMap<String, Arc<ServiceProxy>>>,
+}
+
+impl ServiceRegistry {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    /// Register a service proxy.
+    pub fn register(&self, proxy: ServiceProxy) {
+        let name = proxy.service_name.clone();
+        self.services
+            .write()
+            .expect("lock poisoned")
+            .insert(name, Arc::new(proxy));
+    }
+
+    /// Get a service proxy by name.
+    pub fn get(&self, name: &str) -> ServiceResult<Arc<ServiceProxy>> {
+        self.services
+            .read()
+            .expect("lock poisoned")
+            .get(name)
+            .cloned()
+            .ok_or_else(|| ServiceError::NotFound(name.to_string()))
+    }
+
+    /// List all registered service names.
+    pub fn service_names(&self) -> Vec<String> {
+        self.services
+            .read()
+            .expect("lock poisoned")
+            .keys()
+            .cloned()
+            .collect()
+    }
+
+    /// Number of registered services.
+    pub fn len(&self) -> usize {
+        self.services.read().expect("lock poisoned").len()
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.len() == 0
+    }
+}