feat: standardize transport contracts across Gin and nethttp

app/router.go

@@ -28,6 +28,12 @@ func (a *App) adapt(handler httpx.Handler, middleware ...httpx.Middleware) http.
 	})
 }
 
+// Handle registers an explicit method, including HEAD, OPTIONS and extension
+// methods, through the same business middleware and error handling as GET.
+func (a *App) Handle(method, path string, handler httpx.Handler, middleware ...httpx.Middleware) {
+	a.handle(a.router, method, path, handler, middleware)
+}
+
 func (a *App) GET(path string, handler httpx.Handler, middleware ...httpx.Middleware) {
 	a.handle(a.router, http.MethodGet, path, handler, middleware)
 }
@@ -80,6 +86,11 @@ func (g *RouterGroup) route(method, path string, handler httpx.Handler, middlewa
 	g.app.handle(g.group, method, path, handler, combined)
 }
 
+// Handle registers an explicit method within this group's middleware chain.
+func (g *RouterGroup) Handle(method, path string, handler httpx.Handler, middleware ...httpx.Middleware) {
+	g.route(method, path, handler, middleware)
+}
+
 func (g *RouterGroup) GET(path string, handler httpx.Handler, middleware ...httpx.Middleware) {
 	g.route(http.MethodGet, path, handler, middleware)
 }