🚀 Improve relay initialization and UX enhancements

✅ **Replace** static 5-second sleep with active relay status checking that fails gracefully after timeout

➕ **Add new features**:
- 🏠 Home button navigation to dashboard
- 🧪 Dev mode detection for existing relay on localhost:6942

🧹 Perform minor cleanup (remove unimplemented method in electron)

 #ux #devEx

src/components/Header.ts

@@ -108,6 +108,14 @@ export class Header extends LitElement {
           >
             <iconify-icon icon="material-symbols:arrow-forward"></iconify-icon>
           </button>
+          <button
+            @click=${() => {
+              window.location.hash = '#';
+            }}
+            aria-label="Home"
+          >
+            <iconify-icon icon="material-symbols:home"></iconify-icon>
+          </button>
         </div>
         <div class="search-container" @click=${this.focusSearch}>
           <input