Approval mode of automations in the list; Telegram switch per chat

- Automations: the approval mode is a selection in the list; PATCH /jobs/{id}
  writes permission_mode into the job file's frontmatter (rest of the file
  unchanged, invalid modes rejected). "Allow everything" lets nightly runs work
  without waiting for approvals via Telegram until the timeout.
- Session.telegram_quiet: approvals and questions of a chat (and its subagents)
  are not sent to Telegram; the chat open in Telegram always reports. Toggle in
  the chat's ⋯ menu when a bot is paired. New chats from the web UI and
  automation runs start quiet; chats started from Telegram and existing chats
  keep reporting.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/src/runner.rs

@@ -705,6 +705,7 @@ fn create_child(app: &Arc<App>, ctx: &ToolCtx, agent_name: &str, description: &s
         archived: false,
         folder: None,
         instructions: String::new(),
+        telegram_quiet: false,
     };
     let child = app.save_session(child)?;
     let msg = Message::new(Role::User, vec![Part::Text { text: prompt }]);