fix(apps): scope forte-drop to upc-dev only, not via base

forte-drop and forte-drop-mcp have hackathon-domain values hardcoded
(drop-k8s.hackathon.forteapps.net). Listing them in apps/base/
syncs them to both upc-dev and upc-prod overlays — prod sync would
create broken Applications pointing at non-existent prod ingress.

Move references to apps/overlays/upc-dev/ only.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/base/kustomization.yaml

@@ -6,5 +6,3 @@ resources:
 - musicman
 - ts-mcp
 - argo-mcp
-- forte-drop
-- forte-drop-mcp

apps/overlays/upc-dev/kustomization.yaml

@@ -2,7 +2,11 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
 - ../../base
+- ../../base/forte-drop
+- ../../base/forte-drop-mcp
 - dbunk-demo
 
 # No patches needed — base already has "upc-dev" paths
 # upc-dev is the default/base cluster
+# forte-drop and forte-drop-mcp are scoped to upc-dev only — they have
+# hackathon-domain hardcoded values and must not sync to upc-prod.