Document atomic schedule promote; sync roster phase to operate

Fleet layer aligned via kaizen-agentic schedule promote --fleet-only.

loops/regulator/session-template.md

@@ -33,6 +33,30 @@ kaizen-agentic metrics record optimization --success --time <s> --quality <0-1>
 
 Record decision in state-hub when promotion/demotion approved.
 
+## Cadence promotion (atomic)
+
+After regulator approval, promote all three scheduling layers in one step:
+
+```bash
+kaizen-agentic schedule promote \
+  --engagement-repo /home/worsch/coulomb-loop \
+  --engagement coulomb-loop \
+  --to-phase operate \
+  --activity-core /home/worsch/activity-core
+```
+
+Dry-run first: add `--dry-run`. Repair fleet drift only (definitions already promoted):
+
+```bash
+kaizen-agentic schedule promote \
+  --engagement-repo /home/worsch/coulomb-loop \
+  --fleet-only \
+  --activity-core /home/worsch/activity-core
+```
+
+Layers: (1) `loops/*/cadence.yml`, (2) `activity-definitions/` + activity-core sync,
+(3) pilot `.kaizen/schedule.yml` via roster.
+
 ## Promotion checklist (all must hold)
 
 - Bootstrap exit from source workplan met