[ci skip] tune resource limits and requests across 10 services

Critical OOM fixes (add/increase limits):
- netbox: add 512Mi limit (was at 98.8% of Kyverno default 256Mi)
- speedtest: add 512Mi limit (was at 80.9%)
- meshcentral: add 384Mi limit (was at 72.7%)
- ytdlp: uncomment resources, set 512Mi limit (was at 74.6%)

Over-provisioned (reduce limits):
- dashy: 2Gi → 512Mi (was using 135Mi)
- redis master: 2Gi → 256Mi (was using 14Mi)
- redis replica: 1Gi → 256Mi (was using 12Mi)
- resume printer: 2Gi → 512Mi (was using 108Mi)
- resume app: 1Gi → 384Mi (was using 125Mi)
- openclaw: 4Gi → 1Gi (was using 372Mi)

Under-provisioned requests (increase):
- authentik server: 256Mi → 512Mi request (actual ~560Mi)
- authentik worker: 256Mi → 384Mi request (actual ~400Mi)

New explicit resources (previously Kyverno defaults):
- forgejo: add 512Mi limit, 64Mi request

stacks/platform/modules/authentik/values.yaml

@@ -20,7 +20,7 @@ server:
   resources:
     requests:
       cpu: 100m
-      memory: 256Mi
+      memory: 512Mi
     limits:
       cpu: "2"
       memory: 1Gi
@@ -39,7 +39,7 @@ worker:
   resources:
     requests:
       cpu: 50m
-      memory: 256Mi
+      memory: 384Mi
     limits:
       cpu: "1"
       memory: 1Gi