refactor(ecstore): add server configuration accessors (#3238)

* refactor(ecstore): add server configuration accessors

Phase 4 of global singleton consolidation. Add ECStore accessor
methods for server-level configuration globals.

New methods:
- port() — delegates to global_rustfs_port()
- host() — delegates to GLOBAL_RUSTFS_HOST
- addr() — delegates to GLOBAL_RUSTFS_ADDR
- region() — delegates to get_global_region()
- endpoints() — delegates to get_global_endpoints()
- server_config() — delegates to get_global_server_config()
- storage_class() — delegates to get_global_storage_class()
- tier_config_mgr() — delegates to get_global_tier_config_mgr()
- notification_system() — delegates to get_global_notification_sys()
- bucket_metadata_sys() — delegates to get_global_bucket_metadata_sys()

1160 tests pass, clippy clean, formatting clean.

* fix(ecstore): avoid duplicate server accessors

crates/ecstore/src/store.rs

@@ -76,7 +76,7 @@ use http::HeaderMap;
 use lazy_static::lazy_static;
 use rand::RngExt as _;
 use rustfs_common::heal_channel::{HealItemType, HealOpts};
-use rustfs_common::{GLOBAL_LOCAL_NODE_NAME, GLOBAL_RUSTFS_HOST, GLOBAL_RUSTFS_PORT};
+use rustfs_common::{GLOBAL_LOCAL_NODE_NAME, GLOBAL_RUSTFS_ADDR, GLOBAL_RUSTFS_HOST, GLOBAL_RUSTFS_PORT};
 use rustfs_filemeta::FileInfo;
 use rustfs_lock::{LocalClient, LockClient, NamespaceLockWrapper};
 use rustfs_madmin::heal_commands::HealResultItem;
@@ -274,6 +274,26 @@ impl ECStore {
     }
 }
 
+/// Phase 4: Server address accessors
+/// These provide a unified API through ECStore for accessing server-level
+/// configuration globals. The globals remain the source of truth.
+impl ECStore {
+    /// Get the server port
+    pub fn port(&self) -> u16 {
+        crate::global::global_rustfs_port()
+    }
+
+    /// Get the server host
+    pub async fn host(&self) -> String {
+        GLOBAL_RUSTFS_HOST.read().await.clone()
+    }
+
+    /// Get the server address (host:port)
+    pub async fn addr(&self) -> String {
+        GLOBAL_RUSTFS_ADDR.read().await.clone()
+    }
+}
+
 // impl Clone for ECStore {
 //     fn clone(&self) -> Self {
 //         let pool_meta = match self.pool_meta.read() {