refactor(rpc): Centralize RPC service and unify API (#1427)

This change introduces a major refactoring of the RPC service layer to improve modularity, unify the API, and simplify the overall architecture.

Key changes:
- Replaced per-network-instance RPC services with a single global RPC server, reducing resource usage and simplifying management.
- All clients (CLI, Web UI, etc.) now interact with EasyTier core through a unified RPC entrypoint, enabling consistent authentication and control.
- RPC implementation logic has been moved to `easytier/src/rpc_service/` and organized by functionality (e.g., `instance_manage.rs`, `peer_manage.rs`, `config.rs`) for better maintainability.
- Standardized Protobuf API definitions under `easytier/src/proto/` with an `api_` prefix (e.g., `cli.proto` → `api_instance.proto`) to provide a consistent interface.
- CLI commands now require explicit `--instance-id` or `--instance-name` when multiple network instances are running; the parameter is optional when only one instance exists.

BREAKING CHANGE:  
RPC portal configuration (`rpc_portal` and `rpc_portal_whitelist`) has been removed from per-instance configs and the Web UI. The RPC listen address must now be specified globally via the `--rpc-portal` command-line flag or the `ET_RPC_PORTAL` environment variable, as there is only one RPC service for the entire application.

easytier-web/frontend-lib/src/components/Config.vue

@@ -307,23 +307,6 @@ const portForwardProtocolOptions = ref(["tcp", "udp"]);
                 </div>
               </div>
 
-              <div class="flex flex-row gap-x-9 flex-wrap">
-                <div class="flex flex-col gap-2 basis-5/12 grow">
-                  <label for="rpc_port">{{ t('rpc_port') }}</label>
-                  <InputNumber id="rpc_port" v-model="curNetwork.rpc_port" aria-describedby="rpc_port-help"
-                    :format="false" :min="0" :max="65535" />
-                </div>
-              </div>
-
-              <div class="flex flex-row gap-x-9 flex-wrap w-full">
-                <div class="flex flex-col gap-2 grow p-fluid">
-                  <label for="">{{ t('rpc_portal_whitelists') }}</label>
-                  <AutoComplete id="rpc_portal_whitelists" v-model="curNetwork.rpc_portal_whitelists"
-                    :placeholder="t('chips_placeholder', ['127.0.0.0/8'])" class="w-full" multiple fluid
-                    :suggestions="inetSuggestions" @complete="searchInetSuggestions" />
-                </div>
-              </div>
-
               <div class="flex flex-row gap-x-9 flex-wrap">
                 <div class="flex flex-col gap-2 basis-5/12 grow">
                   <label for="dev_name">{{ t('dev_name') }}</label>

easytier-web/frontend-lib/src/types/network.ts

@@ -31,7 +31,6 @@ export interface NetworkConfig {
   advanced_settings: boolean
 
   listener_urls: string[]
-  rpc_port: number
   latency_first: boolean
 
   dev_name: string
@@ -70,8 +69,6 @@ export interface NetworkConfig {
   enable_magic_dns?: boolean
   enable_private_mode?: boolean
 
-  rpc_portal_whitelists: string[]
-
   port_forwards: PortForwardConfig[]
 }
 
@@ -104,7 +101,6 @@ export function DEFAULT_NETWORK_CONFIG(): NetworkConfig {
       'udp://0.0.0.0:11010',
       'wg://0.0.0.0:11011',
     ],
-    rpc_port: 0,
     latency_first: false,
     dev_name: '',
 
@@ -135,7 +131,6 @@ export function DEFAULT_NETWORK_CONFIG(): NetworkConfig {
     mapped_listeners: [],
     enable_magic_dns: false,
     enable_private_mode: false,
-    rpc_portal_whitelists: [],
     port_forwards: [],
   }
 }

easytier-web/src/client_manager/mod.rs

@@ -247,9 +247,10 @@ impl ClientManager {
 
 #[cfg(test)]
 mod tests {
-    use std::time::Duration;
+    use std::{sync::Arc, time::Duration};
 
     use easytier::{
+        instance_manager::NetworkInstanceManager,
         tunnel::{
             common::tests::wait_for_condition,
             udp::{UdpTunnelConnector, UdpTunnelListener},
@@ -273,7 +274,12 @@ mod tests {
             .unwrap();
 
         let connector = UdpTunnelConnector::new("udp://127.0.0.1:54333".parse().unwrap());
-        let _c = WebClient::new(connector, "test", "test");
+        let _c = WebClient::new(
+            connector,
+            "test",
+            "test",
+            Arc::new(NetworkInstanceManager::new()),
+        );
 
         wait_for_condition(
             || async { mgr.client_sessions.len() == 1 },

easytier-web/src/client_manager/session.rs

@@ -4,13 +4,13 @@ use anyhow::Context;
 use easytier::{
     common::scoped_task::ScopedTask,
     proto::{
+        api::manage::{
+            NetworkConfig, RunNetworkInstanceRequest, WebClientService,
+            WebClientServiceClientFactory,
+        },
         rpc_impl::bidirect::BidirectRpcManager,
         rpc_types::{self, controller::BaseController},
-        web::{
-            HeartbeatRequest, HeartbeatResponse, NetworkConfig, RunNetworkInstanceRequest,
-            WebClientService, WebClientServiceClientFactory, WebServerService,
-            WebServerServiceServer,
-        },
+        web::{HeartbeatRequest, HeartbeatResponse, WebServerService, WebServerServiceServer},
     },
     tunnel::Tunnel,
 };

easytier-web/src/restful/network.rs

@@ -8,7 +8,7 @@ use axum_login::AuthUser;
 use easytier::launcher::NetworkConfig;
 use easytier::proto::common::Void;
 use easytier::proto::rpc_types::controller::BaseController;
-use easytier::proto::{self, web::*};
+use easytier::proto::{self, api::manage::*, web::*};
 
 use crate::client_manager::session::{Location, Session};
 use crate::client_manager::ClientManager;