gateway: quiet Telegram operational chatter

cli-config.yaml.example

@@ -916,6 +916,11 @@ display:
   # Toggle at runtime with /verbose in the CLI
   tool_progress: all
 
+  # Per-platform defaults can be quieter than the global setting. Telegram
+  # defaults to final-answer-first on mobile: tool progress, interim assistant
+  # updates, long-running "Still working..." heartbeats, and detailed busy acks
+  # are off unless re-enabled under display.platforms.telegram.
+
   # Auto-cleanup of temporary progress bubbles after the final response lands.
   # On platforms that support message deletion (currently Telegram), this
   # removes the tool-progress bubble, "⏳ Still working..." notices, and
@@ -939,6 +944,16 @@ display:
   #   false: Only send the final response
   interim_assistant_messages: true
 
+  # Gateway-only long-running status heartbeats.
+  # When false, the platform does not receive periodic "Still working..."
+  # notifications even if agent.gateway_notify_interval is non-zero.
+  # Telegram default: false. Other high-capability chat platforms default true.
+  long_running_notifications: true
+
+  # Include detailed iteration/tool/status context in busy acknowledgments when
+  # a new user message arrives while a run is active. Telegram default: false.
+  busy_ack_detail: true
+
   # What Enter does when Hermes is already busy (CLI and gateway platforms).
   #   interrupt: Interrupt the current run and redirect Hermes (default)
   #   queue:     Queue your message for the next turn