Function runMonitorCycle

runMonitorCycle(
    db: Database,
    network: string,
    rpcUrl?: string,
    feeSponsorSecret?: string,
    predictiveOpts?: PredictiveOptions,
): Promise<MonitorCycleResult>
One complete monitoring polling cycle.

Responsibilities:
1. Load all contracts for the given network from the DB.
2. For each contract, fetch fresh TTLs from the RPC in a single batched call.
3. Persist updated TTL values back to the DB.
4. Detect alert threshold crossings and record them (deduplication aware).
5. Auto-resolve open alerts whose TTL has recovered above the threshold.
Contract: pure logic — no timers, no CLI concerns, no side-effects beyond the provided db handle. Errors from individual contracts are collected and returned rather than propagated so that one bad contract cannot abort the entire cycle.
Parameters
- db: Database
  An open better-sqlite3 Database handle.
- network: string
  The Stellar network to monitor ("testnet" | "mainnet" | …).
- OptionalrpcUrl: string
  Optional override for the RPC endpoint URL.
- OptionalfeeSponsorSecret: string
  Optional fee sponsor secret key source string.
- OptionalpredictiveOpts: PredictiveOptions
  Optional predictive scheduling options (issue #492).
Returns Promise<MonitorCycleResult>
- Defined in core/monitor.ts:86