Remove all CPU limits cluster-wide to eliminate CFS throttling

CPU limits cause CFS throttling even when nodes have idle capacity.
Move to a request-only CPU model: keep CPU requests for scheduling
fairness but remove all CPU limits. Memory limits stay (incompressible).

Changes across 108 files:
- Kyverno LimitRange policy: remove cpu from default/max in all 6 tiers
- Kyverno ResourceQuota policy: remove limits.cpu from all 5 tiers
- Custom ResourceQuotas: remove limits.cpu from 8 namespace quotas
- Custom LimitRanges: remove cpu from default/max (nextcloud, onlyoffice)
- RBAC module: remove cpu_limits variable and quota reference
- Freedify factory: remove cpu_limit variable and limits reference
- 86 deployment files: remove cpu from all limits blocks
- 6 Helm values files: remove cpu under limits sections

stacks/nextcloud/chart_values.yaml

@@ -104,7 +104,6 @@ collabora:
 
 resources:
   limits:
-    cpu: "2"
     memory: 1Gi
   requests:
     cpu: 50m

stacks/nextcloud/main.tf

@@ -42,7 +42,6 @@ resource "kubernetes_resource_quota" "nextcloud" {
     hard = {
       "requests.cpu"    = "4"
       "requests.memory" = "8Gi"
-      "limits.cpu"      = "32"
       "limits.memory"   = "16Gi"
       pods              = "10"
     }
@@ -58,7 +57,6 @@ resource "kubernetes_limit_range" "nextcloud" {
     limit {
       type = "Container"
       default = {
-        cpu    = "250m"
         memory = "256Mi"
       }
       default_request = {
@@ -66,7 +64,6 @@ resource "kubernetes_limit_range" "nextcloud" {
         memory = "64Mi"
       }
       max = {
-        cpu    = "16"
         memory = "8Gi"
       }
     }