fix: add explicit --kv-transfer-config to disagg prefill workers (#6554)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/pr.yaml

@@ -364,7 +364,7 @@ jobs:
     # Run if core, vllm, or deploy is changed
     if: needs.changed-files.outputs.core == 'true' || needs.changed-files.outputs.vllm == 'true' || needs.changed-files.outputs.deploy == 'true'
     runs-on: prod-default-small-v2
-    needs: [deploy-operator, vllm-pipeline]
+    needs: [changed-files, deploy-operator, vllm-pipeline]
     permissions:
       contents: read
     strategy:

examples/backends/vllm/deploy/disagg.yaml

@@ -55,3 +55,5 @@ spec:
             - Qwen/Qwen3-0.6B
             - --disaggregation-mode
             - prefill
+            - --kv-transfer-config
+            - '{"kv_connector":"NixlConnector","kv_role":"kv_both"}'

examples/backends/vllm/deploy/disagg_planner.yaml

@@ -79,3 +79,5 @@ spec:
             - Qwen/Qwen3-0.6B
             - --disaggregation-mode
             - prefill
+            - --kv-transfer-config
+            - '{"kv_connector":"NixlConnector","kv_role":"kv_both"}'

examples/backends/vllm/deploy/disagg_router.yaml

@@ -56,5 +56,7 @@ spec:
             - Qwen/Qwen3-0.6B
             - --disaggregation-mode
             - prefill
+            - --kv-transfer-config
+            - '{"kv_connector":"NixlConnector","kv_role":"kv_both"}'
             - --kv-events-config
             - '{"publisher":"zmq","topic":"kv-events","endpoint":"tcp://*:20080","enable_kv_cache_events":true}'