feat: web console page with protocol + key selection

Includes web/lib/api.ts changes (console_protocols field, connectConsole
method) required for the console page to type-check and build; the task
brief's commit file list omitted this file.

web/lib/api.ts

@@ -19,6 +19,21 @@ export interface Server {
   created_at: string;
   available_updates?: PackageUpdate[];
   updates_checked_at?: string;
+  console_protocols?: string[];
+}
+
+export interface ConsoleConnectRequest {
+  server_id: string;
+  protocol: string;
+  key_id?: string;
+  rdp_username?: string;
+  rdp_password?: string;
+}
+
+export interface ConsoleConnectResponse {
+  session_id: string;
+  token: string;
+  ws_path: string;
 }
 
 export interface Key {
@@ -290,4 +305,12 @@ export const api = {
       method: "DELETE",
     });
   },
+
+  // Console
+  connectConsole(body: ConsoleConnectRequest): Promise<ConsoleConnectResponse> {
+    return request<ConsoleConnectResponse>("/console/connect", {
+      method: "POST",
+      body: JSON.stringify(body),
+    });
+  },
 };