feat: enhance health check endpoint to include GitHub client ID

internal/api/handlers/v0/health.go

@@ -4,12 +4,22 @@ package v0
 import (
 	"encoding/json"
 	"net/http"
+
+	"github.com/modelcontextprotocol/registry/internal/config"
 )
 
+type HealthResponse struct {
+	Status         string `json:"status"`
+	GitHubClientId string `json:"github_client_id"`
+}
+
 // HealthHandler returns a handler for health check endpoint
-func HealthHandler() http.HandlerFunc {
+func HealthHandler(cfg *config.Config) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
-		json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
+		json.NewEncoder(w).Encode(HealthResponse{
+			Status:         "ok",
+			GitHubClientId: cfg.GithubClientID,
+		})
 	}
 }