refactor(data): move base64 decoding to _genFile and remove inline data field

- Removed inline base64 decoding (`data` field) from `_documents` definitions
- Introduced `_genFile(name)` utility to generate Uint8Array from file name
- Simplified `_documents` by eliminating direct `data` property population

src/client/dd-hub-react/src/_mock/_data.ts

@@ -249,23 +249,10 @@ export const _attributes: Attribute[] = [
 
 // ----------------------------------------------------------------------
 
-function base64ToUint8Array(base64: string): Uint8Array {
-  const binaryString = atob(base64); // Decode base64 to binary string
-  const len = binaryString.length;
-  const bytes = new Uint8Array(len);
-
-  for (let i = 0; i < len; i++) {
-    bytes[i] = binaryString.charCodeAt(i);
-  }
-
-  return bytes;
-}
-
 export const _documents: Doc[] = [
   {
     id: 1,
     name: "example1.pdf",
-    data: base64ToUint8Array(_base64.example1_pdf),
     addedWhen: new Date("2024-01-12T10:00:00Z"),
     addedWho: "TekH",
     attributes: [
@@ -320,12 +307,10 @@ export const _documents: Doc[] = [
         type: 'DATETIME'
       }
     ]
-
   },
   {
     id: 2,
     name: "example2.pdf",
-    data: base64ToUint8Array(_base64.example2_pdf),
     addedWhen: new Date("2024-02-03T09:30:00Z"),
     addedWho: "bob",
     changedWhen: new Date("2024-03-15T12:00:00Z"),
@@ -386,7 +371,6 @@ export const _documents: Doc[] = [
   {
     id: 3,
     name: "document1.docx",
-    data: base64ToUint8Array(_base64.document1_docx),
     addedWhen: new Date("2023-12-20T14:45:00Z"),
     addedWho: "SchreiberM",
     attributes: [
@@ -435,7 +419,6 @@ export const _documents: Doc[] = [
   {
     id: 4,
     name: "spreadsheet1.xlsx",
-    data: base64ToUint8Array(_base64.spreadsheet1_xlsx),
     addedWhen: new Date("2024-05-01T08:15:00Z"),
     addedWho: "KammM",
     changedWhen: new Date("2024-06-10T16:20:00Z"),
@@ -486,7 +469,6 @@ export const _documents: Doc[] = [
   {
     id: 5,
     name: "report.docx",
-    data: base64ToUint8Array(_base64.report_docx),
     addedWhen: new Date("2024-04-17T11:25:00Z"),
     addedWho: "SchreiberM",
     attributes: [
@@ -550,4 +532,32 @@ export const _documents: Doc[] = [
       type: attr.type as Type
     }))
   }))
-  .map(doc => Doc.map(doc));
+  .map(doc => Doc.map(doc));
+
+function base64ToUint8Array(base64: string): Uint8Array {
+  const binaryString = atob(base64); // Decode base64 to binary string
+  const len = binaryString.length;
+  const bytes = new Uint8Array(len);
+
+  for (let i = 0; i < len; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+
+  return bytes;
+}
+
+export function _genFile(name: string): Uint8Array | undefined {
+  switch (name) {
+    case "example1.pdf":
+      return base64ToUint8Array(_base64.example1_pdf);
+    case "example2.pdf":
+      return base64ToUint8Array(_base64.example2_pdf);
+    case "document1.docx":
+      return base64ToUint8Array(_base64.document1_docx);
+    case "spreadsheet1.xlsx":
+      return base64ToUint8Array(_base64.spreadsheet1_xlsx);
+    case "report.docx":
+      return base64ToUint8Array(_base64.report_docx);
+    default:
+  }
+}