Constant LOOP_TOOL 

pub(crate) const LOOP_TOOL: &str = r#"{
  "name": "Loop",
  "description": "Cross-agent recurring inject: run a prompt or slash command on a recurring interval by injecting it into ANOTHER agent's conversation (or your own, if you explicitly need muxbus-delivered self-messaging). Returns immediately with a loop_id; the prompt is injected on a fixed schedule until you call LoopStop(loop_id) or it exhausts max_iterations. If you're scheduling your OWN future turn (a same-session self-check, no other agent involved) — prefer the native ScheduleWakeup (one-off or adaptive-delay recurring, via re-arming) or native CronCreate (durable, cron-expression) tools instead: they have zero delivery overhead (no cross-agent messaging envelope) and built-in cache-window-aware backoff guidance this tool doesn't have. Use THIS tool only when the target is a different agent, or you specifically need AgentMux-persisted delivery across a restart. Loops stop automatically when the agent pane closes.",
  "inputSchema": {
    "type": "object",
    "properties": {
      "prompt":         { "type": "string",  "description": "The prompt or slash command to inject each interval (e.g. 'check the PR status' or '/babysit-prs')" },
      "interval":       { "type": "string",  "description": "How often to run: a number with optional unit s/m/h (e.g. '30s', '5m', '1h'). A bare number is minutes. Default '10m'. Minimum 10s." },
      "to":             { "type": "string",  "description": "Target agent name (its AGENTMUX_AGENT_ID) to inject into. Defaults to this agent itself (a self-loop)." },
      "immediate":      { "type": "boolean", "description": "Run once immediately on start in addition to every interval. Default false (first run after one interval)." },
      "max_iterations": { "type": "integer", "description": "Stop automatically after this many fires. Omit or set to 0 for unlimited." }
    },
    "required": ["prompt"]
  }
}"#;