feat(dashboard): enhance dashboard settings UI and add item management scripts

- Updated the dashboard settings partial to include a semi-transparent background for better visibility.
- Introduced a new script for validating the syntax of dashboard item scripts, ensuring better error handling and diagnostics.
- Added a comprehensive JavaScript file for managing dashboard items, including fetching, rendering, editing, and deleting items.
- Implemented various utility functions for handling alerts, rewards, and modal interactions within the item management interface.
- Created temporary scripts for debugging and parsing errors in item scripts, aiding in development and maintenance.

tmp_acorn.js

@@ -0,0 +1,20 @@
+const fs = require('fs'); const acorn = require('acorn');
+const path = '/home/shni/amayo/amayo/src/server/views/partials/dashboard/dashboard_items.ejs';
+const s = fs.readFileSync(path,'utf8');
+const m = s.match(/<script[^>]*>([\s\S]*?)<\/script>/i);
+if(!m){ console.error('NO_SCRIPT'); process.exit(2);} const src = m[1];
+try{
+  acorn.parse(src, {ecmaVersion:2020});
+  console.log('ACORN OK');
+}catch(err){
+  console.error('ACORN ERR', err.message);
+  if(err.loc){
+    const lines = src.split('\n');
+    const L = err.loc.line; const C = err.loc.column;
+    console.error('at line', L, 'col', C);
+    const start = Math.max(0, L-4); const end = Math.min(lines.length, L+2);
+    for(let i=start;i<end;i++){
+      const n = i+1; console.error((n===L? '>' : ' ') + n.toString().padStart(4,' ') + '| ' + lines[i]);
+    }
+  }
+}