feat: add troubleshooting side panel and advanced queue controls

- Implemented a global toggle to enable/disable background queue processing.
- Added a Side Panel (Sidebar.html) to view pending edits.
- Added per-item controls: 'Delete' to remove from queue, 'Push' to force update.
- Updated 'onEditQueue.ts' with robust error handling for batch processing.
- Updated documentation (README, ARCHITECTURE) to reflect new features.
- Fixed 'clasp' deployment issues by cleaning up manifest management.

src/initMenu.ts

@@ -4,6 +4,7 @@ import { createMissingPhotoFolders } from "./createMissingPhotoFolders"
 import { matchProductToShopify, updateProductToShopify } from "./match"
 import { reinstallTriggers } from "./triggers"
 import { toastAndLog } from "./sheetUtils"
+import { showSidebar } from "./sidebar"
 
 export function initMenu() {
   let ui = SpreadsheetApp.getUi()
@@ -29,6 +30,7 @@ export function initMenu() {
         .createMenu("Utilities...")
         .addItem("Reauthorize script", reauthorizeScript.name)
         .addItem("Reinstall triggers", reinstallTriggers.name)
+        .addItem("Troubleshoot", showSidebar.name)
     )
     .addToUi()
 }