fix(worldbuilder): cpu request 100m -> 25m to clear scheduler

Cluster CPU-request budget at 99% on all 3 RKE2 nodes at deploy time.
0/3 nodes available; "3 Insufficient cpu". Actual CPU usage on the
nodes is 10/52/19%, so the cluster is request-overprovisioned but has
plenty of real headroom. Idle Blazor + SignalR + ComfyUI poller is ~5m.
25m unblocks scheduling and stays generous for expected runtime.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/worldbuilder/worldbuilder.yaml

@@ -98,8 +98,13 @@ spec:
             - name: FlowerCore__WorldBuilder__ImageGeneration__ClientMode
               value: "comfyui"
           resources:
+            # Cluster CPU-request budget runs hot (99% on all 3 nodes at deploy
+            # time) while actual CPU usage is well below capacity. Idle Blazor
+            # Server + SignalR + a single ComfyUI poller uses ~5m, so 25m is
+            # generous. Re-evaluate if active rendering/export workers ever
+            # push past the limit.
             requests:
-              cpu: 100m
+              cpu: 25m
               memory: 256Mi
             limits:
               cpu: 1000m