refactor: remove legacy container and non-discord remnants

src/types.ts

@@ -1,11 +1,4 @@
-export interface AdditionalMount {
-  hostPath: string; // Absolute path on host (supports ~ for home)
-  containerPath?: string; // Optional — defaults to basename of hostPath. Mounted at /workspace/extra/{value}
-  readonly?: boolean; // Default: true for safety
-}
-
 export interface AgentConfig {
-  additionalMounts?: AdditionalMount[];
   timeout?: number; // Default: 300000 (5 minutes)
   // Per-group model/effort overrides (take precedence over global env vars)
   codexModel?: string;
@@ -78,6 +71,8 @@ export interface Channel {
   sendMessage(jid: string, text: string): Promise<void>;
   isConnected(): boolean;
   ownsJid(jid: string): boolean;
+  // Optional: whether a stored inbound message was authored by this channel's own bot/user.
+  isOwnMessage?(msg: NewMessage): boolean;
   disconnect(): Promise<void>;
   // Optional: typing indicator. Channels that support it implement it.
   setTyping?(jid: string, isTyping: boolean): Promise<void>;