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/document.ts

@@ -41,25 +41,25 @@ export class DeDocument extends DeesElement {
     type: String,
     reflect: true,
   })
-  public format: "a4" = "a4";
+  accessor format: "a4" = "a4";
 
   @property({
     type: Number,
     reflect: true,
   })
-  public viewWidth: number = null;
+  accessor viewWidth: number = null;
 
   @property({
     type: Number,
     reflect: true,
   })
-  public viewHeight: number = null;
+  accessor viewHeight: number = null;
 
   @property({
     type: Boolean,
     reflect: true,
   })
-  printMode = false;
+  accessor printMode = false;
 
   @property({
     type: Object,
@@ -72,7 +72,7 @@ export class DeDocument extends DeesElement {
       }
     },
   })
-  public letterData: plugins.tsclass.business.TLetter;
+  accessor letterData: plugins.tsclass.business.TLetter;
 
   @property({
     type: Object,
@@ -85,7 +85,7 @@ export class DeDocument extends DeesElement {
       }
     },
   })
-  public documentSettings: plugins.shared.interfaces.IDocumentSettings =
+  accessor documentSettings: plugins.shared.interfaces.IDocumentSettings =
     defaultDocumentSettings;
 
   constructor() {