refactor(api): consolidate health check endpoints to /health

Removes the redundant `/healthz` and `/api/v1/health` endpoints, leaving `/health` as the sole health check endpoint.

- Update router to return 404 Not Found for the removed endpoints
- Update admin log filtering to only ignore `/health`
- Remove health URL from API documentation data
- Update tests to verify `/health` returns 200 and others return 404
- Update README documentation to reflect the change

backend/libs/handlers/admin.go

@@ -1770,7 +1770,7 @@ func isHealthCheckLogEntry(raw map[string]any) bool {
 	if idx := strings.IndexByte(path, '?'); idx >= 0 {
 		path = path[:idx]
 	}
-	return path == "/health" || path == "/healthz" || path == "/api/v1/health"
+	return path == "/health"
 }
 
 func logEntryFromMap(raw map[string]any) adminLogEntry {

backend/libs/handlers/api_docs.go

@@ -10,7 +10,6 @@ import (
 type apiDocsData struct {
 	BaseURL             string
 	UploadURL           string
-	HealthURL           string
 	RequestSchemaURL    string
 	ResponseSchemaURL   string
 	ShareXExamplePath   string
@@ -39,7 +38,6 @@ func (a *App) APIDocs(w http.ResponseWriter, r *http.Request) {
 		Data: apiDocsData{
 			BaseURL:             a.cfg.BaseURL,
 			UploadURL:           a.cfg.BaseURL + "/api/v1/upload",
-			HealthURL:           a.cfg.BaseURL + "/api/v1/health",
 			RequestSchemaURL:    a.cfg.BaseURL + "/api/v1/schemas/upload-request.json",
 			ResponseSchemaURL:   a.cfg.BaseURL + "/api/v1/schemas/upload-response.json",
 			ShareXExamplePath:   "examples/sharex/warpbox-anonymous.sxcu",

backend/libs/handlers/app.go

@@ -129,8 +129,8 @@ func (a *App) RegisterRoutes(mux *http.ServeMux) {
 	mux.HandleFunc("GET /d/{boxID}/thumb/{fileID}", a.Thumbnail)
 	mux.HandleFunc("GET /d/{boxID}/og-image.jpg", a.BoxOGImage)
 	mux.HandleFunc("GET /health", a.Health)
-	mux.HandleFunc("GET /healthz", a.Health)
-	mux.HandleFunc("GET /api/v1/health", a.Health)
+	mux.HandleFunc("GET /healthz", notFound)
+	mux.HandleFunc("GET /api/v1/health", notFound)
 	mux.HandleFunc("GET /api/v1/sharex/warpbox-anonymous.sxcu", a.ShareXAnonymousConfig)
 	mux.HandleFunc("GET /api/v1/schemas/upload-request.json", a.UploadRequestSchema)
 	mux.HandleFunc("GET /api/v1/schemas/upload-response.json", a.UploadResponseSchema)
@@ -138,3 +138,7 @@ func (a *App) RegisterRoutes(mux *http.ServeMux) {
 	mux.HandleFunc("GET /emoji/{pack}/{file}", a.EmojiAsset)
 	mux.Handle("GET /static/", a.Static())
 }
+
+func notFound(w http.ResponseWriter, r *http.Request) {
+	http.NotFound(w, r)
+}

backend/libs/handlers/health.go

@@ -13,6 +13,10 @@ type healthResponse struct {
 }
 
 func (a *App) Health(w http.ResponseWriter, r *http.Request) {
+	if r.URL.Path != "/health" {
+		http.NotFound(w, r)
+		return
+	}
 	helpers.WriteJSON(w, http.StatusOK, healthResponse{
 		Status: "ok",
 		Time:   time.Now().UTC().Format(time.RFC3339),

backend/libs/handlers/health_test.go

@@ -13,16 +13,20 @@ func TestHealthRoutes(t *testing.T) {
 	mux := http.NewServeMux()
 	app.RegisterRoutes(mux)
 
-	for _, path := range []string{"/health", "/healthz", "/api/v1/health"} {
-		t.Run(path, func(t *testing.T) {
-			request := httptest.NewRequest(http.MethodGet, path, nil)
-			response := httptest.NewRecorder()
+	request := httptest.NewRequest(http.MethodGet, "/health", nil)
+	response := httptest.NewRecorder()
 
-			mux.ServeHTTP(response, request)
+	mux.ServeHTTP(response, request)
 
-			if response.Code != http.StatusOK {
-				t.Fatalf("status = %d, body = %s", response.Code, response.Body.String())
-			}
-		})
+	if response.Code != http.StatusOK {
+		t.Fatalf("status = %d, body = %s", response.Code, response.Body.String())
+	}
+	for _, path := range []string{"/healthz", "/api/v1/health"} {
+		request := httptest.NewRequest(http.MethodGet, path, nil)
+		response := httptest.NewRecorder()
+		mux.ServeHTTP(response, request)
+		if response.Code != http.StatusNotFound {
+			t.Fatalf("%s status = %d, want 404", path, response.Code)
+		}
 	}
 }

backend/libs/services/bans.go

@@ -472,7 +472,7 @@ func (s *BanService) MaliciousPattern(path string) (string, error) {
 }
 
 func shouldSkipMaliciousPath(path string) bool {
-	return path == "/health" || path == "/healthz" || path == "/api/v1/health" || strings.HasPrefix(path, "/static/")
+	return path == "/health" || strings.HasPrefix(path, "/static/")
 }
 
 func (s *BanService) RecordAbuse(ip, kind, detail string, threshold int, now time.Time) (AbuseResult, error) {