feat: Add Bitcoin address support and improve UX

- Add Bitcoin bech32 address generation with proper BTC WIF private keys (L/K prefix)
- Reject FLO/BTC addresses in balance search (ETH addresses and private keys only)
- Update search placeholder for clarity
- Move notifications to top-right on desktop to avoid Searched addresses overlap

index.html

@@ -142,8 +142,7 @@
                         <svg class="icon" xmlns="http://www.w3.org/2000/svg" height="24px" viewBox="0 0 24 24"
                             width="24px" fill="#000000">
                             <path d="M0 0h24v24H0V0z" fill="none" />
-                        <path
-                            d="M19 9h-4V3H9v6H5l7 7 7-7zM5 18v2h14v-2H5z" />
+                            <path d="M19 9h-4V3H9v6H5l7 7 7-7zM5 18v2h14v-2H5z" />
                         </svg>
                         <span class="nav-item__title">
                             Retrieve
@@ -460,24 +459,24 @@
             }
         }
 
-//Moving notification draw so that it does not overlap the menu item
-(function placeToasts() {
+        //Moving notification draw so that it does not overlap the menu item
+        (function placeToasts() {
             const drawer = document.getElementById('notification_drawer');
             const panel = drawer?.shadowRoot?.querySelector('.notification-panel');
             if (!panel) return;
 
             const apply = () => {
                 if (window.matchMedia('(min-width: 640px)').matches) {
-      // Desktop: offset from left navbar
+                    // Desktop: top-right corner
                     Object.assign(panel.style, {
-        left: 'calc(10rem + 1rem)',
-        bottom: '1rem',
-        top: 'auto',
-        right: '1rem',   // optional, lets long toasts wrap before content edge
+                        left: 'auto',
+                        top: '1rem',
+                        right: '1rem',
+                        bottom: 'auto',
                         zIndex: '1000'
                     });
                 } else {
-      // Mobile: keep top-right or top-left as you prefer
+                    // Mobile: top-center
                     Object.assign(panel.style, {
                         left: '0.5rem',
                         top: '0.5rem',
@@ -490,7 +489,7 @@
 
             apply();
             window.addEventListener('resize', apply);
-})();
+        })();
 
     </script>
     <script>
@@ -665,7 +664,7 @@
                     </h2>
                     <sm-form oninvalid="handleInvalidSearch()">
                         <div id="input_wrapper">
-                            <sm-input id="check_balance_input" class="password-field flex-1" placeholder="Address, private key, or tx hash"
+                            <sm-input id="check_balance_input" class="password-field flex-1" placeholder="ETH address, private key, or tx hash"
                                 type="password" animate>
                                 <svg class="icon" slot="icon" xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" height="24px" viewBox="0 0 24 24" width="24px" fill="#000000"> <g> <rect fill="none" height="24" width="24"></rect> </g> <g> <path d="M21,10h-8.35C11.83,7.67,9.61,6,7,6c-3.31,0-6,2.69-6,6s2.69,6,6,6c2.61,0,4.83-1.67,5.65-4H13l2,2l2-2l2,2l4-4.04L21,10z M7,15c-1.65,0-3-1.35-3-3c0-1.65,1.35-3,3-3s3,1.35,3,3C10,13.65,8.65,15,7,15z"> </path> </g> </svg>
                                 <label slot="right" class="interact">
@@ -777,6 +776,18 @@
                     return;
                 }
 
+                // Reject FLO addresses (start with F)
+                if (/^F[a-km-zA-HJ-NP-Z1-9]{26,34}$/.test(keyToConvert)) {
+                    notify('FLO addresses are not supported. Please use an ETH address or private key.', 'error');
+                    return;
+                }
+
+                // Reject BTC addresses (legacy: 1/3, segwit: bc1)
+                if (/^(1|3)[a-km-zA-HJ-NP-Z1-9]{25,34}$/.test(keyToConvert) || /^bc1[a-z0-9]{39,59}$/i.test(keyToConvert)) {
+                    notify('BTC addresses are not supported. Please use an ETH address or private key.', 'error');
+                    return;
+                }
+
                 // Check if it's a valid Ethereum address
                 if (ethOperator.isValidAddress(keyToConvert)) {
                     ethAddress = keyToConvert
@@ -1812,6 +1823,9 @@
             const { floID, privKey } = floCrypto.generateNewID();
             const ethPrivateKey = coinjs.wif2privkey(privKey).privkey;
             const ethAddress = floEthereum.ethAddressFromPrivateKey(ethPrivateKey)
+            const btcBech32 = btcOperator.bech32Address(privKey);
+            // Convert FLO WIF to Bitcoin WIF format (L/K prefix)
+            const btcPrivKey = btcOperator.convert.wif(privKey);
             renderElem(getRef('created_address_wrapper'), html`
                 <ul id="generated_addresses" class="grid gap-1-5">
                     <li class="grid gap-0-5">
@@ -1824,6 +1838,16 @@
                             <sm-copy value="${privKey}"></sm-copy>
                         </div>
                     </li>
+                    <li class="grid gap-0-5">
+                        <div>
+                            <h5>Bitcoin Address</h5>
+                            <sm-copy value="${btcBech32}"></sm-copy>
+                        </div>
+                        <div>
+                            <h5>Private Key</h5>
+                            <sm-copy value="${btcPrivKey}"></sm-copy>
+                        </div>
+                    </li>
                     <li class="grid gap-0-5">
                         <div>
                             <h5>Equivalent Ethereum Address</h5>