docs: add detailed CI coverage info to gateway integrations page

Signed-off-by: samzong <[email protected]>

Author: samzong

website/docs/overview/architecture/gateway-integrations.md

@@ -41,7 +41,7 @@ flowchart LR
 
 | Gateway profile      | Integration path                           | SR  adds                                                                            | CI status                                                                                                                                                                                                                                                              | Manifests / config                                                                                                       |
 | -------------------- | ------------------------------------------ | ----------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ |
-| **Envoy AI Gateway** | ExtProc gRPC (Envoy AI Gateway → SR)       | Classification → model header, PII/jailbreak, semantic cache, observability headers | [![integration-test-k8s](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-k8s.yml/badge.svg)](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-k8s.yml) <br /> [![integration-test-helm](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-helm.yml/badge.svg)](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-helm.yml) | [`deploy/kubernetes/ai-gateway`](https://github.com/vllm-project/semantic-router/tree/main/deploy/kubernetes/ai-gateway) |
+| **Envoy AI Gateway** | ExtProc gRPC (Envoy AI Gateway → SR)       | Classification → model header, PII/jailbreak, semantic cache, observability headers | [![integration-test-k8s](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-k8s.yml/badge.svg)](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-k8s.yml)<br/>**Validates:**<br/>• **Features:** Classification, Cache, PII, Jailbreak<br/>• **Routing:** Priority, Fallback, Keyword<br/>• **Traffic:** Chat API, Stress tests<br/><br/>[![integration-test-helm](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-helm.yml/badge.svg)](https://github.com/vllm-project/semantic-router/actions/workflows/integration-test-helm.yml)<br/>**Validates:** Install, Upgrade, Rollback | [`deploy/kubernetes/ai-gateway`](https://github.com/vllm-project/semantic-router/tree/main/deploy/kubernetes/ai-gateway) |
 | **Istio Gateway**    | Gateway API Inference Extension + ExtProc  | Same as above; demo with dual vLLM backends                                         | Manual guide | [`deploy/kubernetes/istio`](https://github.com/vllm-project/semantic-router/tree/main/deploy/kubernetes/istio)           |
 | **AIBrix Gateway**   | Envoy Gateway API resources + ExtProc      | SR intelligence in front of AIBrix autoscaler and distributed KV                    | Helm + AIBrix manifests; <br /> follows Envoy ExtProc; <br /> Planned E2E                                                                                                                                                                                                                    | [`deploy/kubernetes/aibrix`](https://github.com/vllm-project/semantic-router/tree/main/deploy/kubernetes/aibrix)         |
 | **LLM-D Gateway**    | Istio Gateway + LLM-D schedulers + ExtProc | Semantic routing feeds pool selection in LLM-D                                      | Covered by Istio flow; <br /> Planned E2E                                                                                                                                                                                                                                         | [`deploy/kubernetes/llmd-base`](https://github.com/vllm-project/semantic-router/tree/main/deploy/kubernetes/llmd-base)   |