fix(system): expose only GET /api/healthz

Remove /healthz and /api/health so the process advertises a single probe at /api/healthz with {status: ok}.

backend/plugins/domain/auth/plugin.go

@@ -134,7 +134,7 @@ func (p *Plugin) Apply(ctx *core.Context) error {
 		"/api/v1/user/send-email-code",
 		"/api/v1/cap/challenge",
 		"/api/v1/cap/redeem",
-		"/healthz",
+		"/api/healthz",
 		"/metrics",
 	}
 	RegisterWhitelist(publicEndpoints...)

backend/plugins/domain/system/health_route_test.go

@@ -15,56 +15,40 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-func TestHealthRouteReturnsOKNil(t *testing.T) {
+func TestHealthzIsTheOnlyHealthRoute(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	ctx := core.NewContext(context.Background())
 	if err := New().Apply(ctx); err != nil {
 		t.Fatal(err)
 	}
 
-	healthHandler := routeHandler(t, ctx, "GET", "/api/health")
-	routeHandler(t, ctx, "GET", "/healthz")
-	if !ctx.Router().IsWhitelisted("/api/health") {
-		t.Fatal("GET /api/health is not whitelisted")
+	var hasHealthz bool
+	for _, rd := range ctx.Router().Routes() {
+		key := rd.Method + " " + rd.Path
+		switch key {
+		case "GET /api/healthz":
+			hasHealthz = true
+		case "GET /healthz", "GET /api/health":
+			t.Errorf("removed health route still registered: %s", key)
+		}
+	}
+	if !hasHealthz {
+		t.Fatal("GET /api/healthz missing")
+	}
+	if !ctx.Router().IsWhitelisted("/api/healthz") {
+		t.Fatal("GET /api/healthz not whitelisted")
 	}
 
+	handler := routeHandler(t, ctx, "GET", "/api/healthz")
 	w := httptest.NewRecorder()
 	c, _ := gin.CreateTestContext(w)
-	c.Request = httptest.NewRequest(http.MethodGet, "/api/health", nil)
-	healthHandler(c)
+	c.Request = httptest.NewRequest(http.MethodGet, "/api/healthz", nil)
+	handler(c)
 
 	if w.Code != http.StatusOK {
 		t.Fatalf("status = %d, want %d", w.Code, http.StatusOK)
 	}
 
-	var body struct {
-		ErrorMsg string `json:"error_msg"`
-		Data     any    `json:"data"`
-	}
-	if err := json.Unmarshal(w.Body.Bytes(), &body); err != nil {
-		t.Fatal(err)
-	}
-	if body.ErrorMsg != "" {
-		t.Fatalf("error_msg = %q, want empty", body.ErrorMsg)
-	}
-	if body.Data != nil {
-		t.Fatalf("data = %#v, want null", body.Data)
-	}
-}
-
-func TestHealthzRouteUnchanged(t *testing.T) {
-	gin.SetMode(gin.TestMode)
-	ctx := core.NewContext(context.Background())
-	if err := New().Apply(ctx); err != nil {
-		t.Fatal(err)
-	}
-
-	handler := routeHandler(t, ctx, "GET", "/healthz")
-	w := httptest.NewRecorder()
-	c, _ := gin.CreateTestContext(w)
-	c.Request = httptest.NewRequest(http.MethodGet, "/healthz", nil)
-	handler(c)
-
 	var body map[string]any
 	if err := json.Unmarshal(w.Body.Bytes(), &body); err != nil {
 		t.Fatal(err)

backend/plugins/domain/system/plugin.go

@@ -50,14 +50,10 @@ func (p *Plugin) Apply(ctx *core.Context) error {
 	appName := ctx.Config().String("app.app_name", "Wavelet")
 
 	// 1. Health check
-	ctx.Router().GET("/healthz", func(c *gin.Context) {
-		c.JSON(http.StatusOK, gin.H{"status": "ok"})
-	})
 	ctx.Router().GET("/api/healthz", func(c *gin.Context) {
 		c.JSON(http.StatusOK, gin.H{"status": "ok"})
 	})
-	ctx.Router().GET("/api/health", Health)
-	ctx.Router().RegisterWhitelist("/api/health")
+	ctx.Router().RegisterWhitelist("/api/healthz")
 
 	// 2. Public config
 	ctx.Router().GET("/api/v1/config/public", func(c *gin.Context) {
@@ -90,14 +86,3 @@ func (p *Plugin) Apply(ctx *core.Context) error {
 
 	return nil
 }
-
-// Health 健康检查
-// @Summary 健康检查
-// @Description 检查服务是否正常运行，可用于负载均衡存活探测
-// @Tags health
-// @Produce json
-// @Success 200 {object} response.Any{data=string} "服务正常"
-// @Router /api/health [get]
-func Health(c *gin.Context) {
-	c.JSON(http.StatusOK, response.OKNil())
-}