#10378 feat: Add configuration for job heartbeat frequency Pull request opened by stevenlw-porpoise Description Adds a new setting job_heartbeat_interval which configures the frequency the heartbeats are made in the system database. Lowering this frequency can reduce load on the database. Corresponding documentation and tests are included. Checklist • I have read the contribution guide Was generative AI tooling used to co-author this PR? • Yes (please specify the tool below) Generated-by: Codex with GPT-6.1-Sol following the agentic coding guidelines Related Issues • Addresses #10373 Summary by Sourcery Configure the frequency of job heartbeats written to the system database. Enhancements: • Add a configurable job heartbeat interval to reduce system database writes for long-running jobs while enforcing the stale-job safety limit. Documentation: • Document the new heartbeat interval setting, supported configuration methods, defaults, and valid range. Tests: • Add coverage for configured heartbeat intervals and validation of invalid values across job execution paths. meltano/meltano