- Replace manual string prefix check with strings.HasPrefix (idiomatic Go)
- Refactor CleanupCancelledDeploy export to call the real cleanupCancelledDeploy
method instead of re-implementing the logic, so tests catch regressions
- Add nil-db guard in Deployment.Save and App.Save to prevent panics when
models are used without a database connection (e.g. in test exports)
- Fix wsl_v5 lint issue (missing blank line before assignment)