[add] pwa manifest, [fix] missing koplugin import

api/api.go

@@ -72,6 +72,7 @@ func (api *API) registerWebAppRoutes() {
 
 	api.Router.HTMLRender = render
 
+	api.Router.GET("/manifest.json", api.webManifest)
 	api.Router.GET("/login", api.createAppResourcesRoute("login"))
 	api.Router.GET("/register", api.createAppResourcesRoute("login", gin.H{"Register": true}))
 	api.Router.GET("/logout", api.authWebAppMiddleware, api.authLogout)

api/app-routes.go

@@ -25,6 +25,11 @@ func baseResourceRoute(template string, args ...map[string]any) func(c *gin.Cont
 	}
 }
 
+func (api *API) webManifest(c *gin.Context) {
+	c.Header("Content-Type", "application/manifest+json")
+	c.File("./assets/manifest.json")
+}
+
 func (api *API) createAppResourcesRoute(routeName string, args ...map[string]any) func(*gin.Context) {
 	// Merge Optional Template Data
 	var templateVarsBase = gin.H{}