Complete agent monitoring and Galaxy Control integration

- expose command-monitor conversations and preserve visible agent transcripts
- add bounded polling and a dedicated shell interrupt tool
- improve direct-provider images, skills, tool history, and usage handling
- package and brand Galaxy Control across releases, installers, persistence, and docs

app/src/ai/blocklist/controller/slash_command.rs

@@ -104,7 +104,6 @@ impl SlashCommandRequest {
             is_invoke_skill,
             controller.context_model.as_ref(ctx),
             controller.active_session.as_ref(ctx),
-            conversation_id,
             image_context,
             ctx,
         );