feat: rename ThreeFold to Mycelium in copyright, docs, specs, and UI across codebase

src/static/js/dashboard-resource_provider.js

@@ -131,10 +131,10 @@ function validateSlicePrice(event) {
 }
 
 /**
- * Validate nodes by fetching data from ThreeFold Grid
+ * Validate nodes by fetching data from Mycelium Grid
  */
 function validateNodes() {
-    console.log('🔍 Validating nodes from ThreeFold Grid');
+    console.log('🔍 Validating nodes from Mycelium Grid');
     
     // Prevent validation if nodes are being added
     const addBtn = document.getElementById('addNodesBtn');