fix(tmux): pass full session info to the terminal's session picker (#1552)

The tmux.sessions service reduced detected sessions to bare names, but the
picker reads session.name, so every entry rendered blank and selecting one
sent an empty name, which created a new session instead of attaching.

plugins/ssh-terminal/src/backend/services.ts

@@ -65,9 +65,17 @@ export interface TerminalHistoryV1 {
   list: (hostId: number, limit?: number) => Promise<CommandHistoryEntry[]>;
 }
 
+export interface TmuxSessionInfo {
+  name: string;
+  created: number;
+  lastActivity: number;
+  windows: number;
+  attachedClients: number;
+}
+
 export interface TmuxDetection {
   available: boolean;
-  sessions: string[];
+  sessions: TmuxSessionInfo[];
 }
 
 /**