fix(core): Migrate file I/O to @push.rocks/smartfs, adopt TC39 decorators v3 accessor in web components, and update docs/tests

ts_web/elements/page.ts

@@ -28,44 +28,44 @@ export class DePage extends DeesElement {
   @property({
     type: Number,
   })
-  viewWidth: number = null;
+  accessor viewWidth: number = null;
 
   @property({
     type: Number,
   })
-  viewHeight: number = null;
+  accessor viewHeight: number = null;
 
   @property({
     type: String,
   })
-  public format: "a4" = "a4";
+  accessor format: "a4" = "a4";
 
   @property({
     type: Number,
   })
-  public pageNumber: number = 1;
+  accessor pageNumber: number = 1;
 
   @property({
     type: Number,
   })
-  public pageTotalNumber: number = 1;
+  accessor pageTotalNumber: number = 1;
 
   @property({
     type: Object,
   })
-  public letterData: tsclass.business.TLetter = null;
+  accessor letterData: tsclass.business.TLetter = null;
 
   @property({
     type: Boolean,
     reflect: true,
   })
-  printMode = false;
+  accessor printMode = false;
 
   @property({
     type: Object,
     reflect: true,
   })
-  public documentSettings: plugins.shared.interfaces.IDocumentSettings =
+  accessor documentSettings: plugins.shared.interfaces.IDocumentSettings =
     defaultDocumentSettings;
 
   constructor() {