Checklist

• I've searched the issue queue to verify this is not a duplicate feature request.
• I've pasted the output of kargo version, if applicable.
• I've pasted logs, if applicable.

Proposed Feature

Make the reconcile requeue delay configurable for these controllers:

• cluster_config
• stage
• projects
• project_config

Currently the controllers uses a hard-coded five-minute delay. for example in internal/controller/stages/regular_stages.go at lines 383–385:

// Otherwise, requeue after a delay.
// TODO: Make the requeue delay configurable.
return ctrl.Result{RequeueAfter: 5 * time.Minute}, nil

Expose a single config knob per controller (env var and Helm value) with a default of 5m.

Motivation

Operators cannot tune reconciliation frequency without rebuilding or patching.
Configurable intervals allow faster feedback for time-sensitive workloads and lower resource usage for quiet ones, without using custom patched versions.