Fix crypto copy buttons and correct ETH address

ETH address was wrong in the support modal. Also fixed clipboard
copy failing on HTTP (Docker) — navigator.clipboard requires HTTPS.
Added textarea fallback for insecure contexts, and shows the address
in a toast as last resort if both methods fail.

webui/index.html

@@ -5881,7 +5881,7 @@
                     <svg class="support-link-icon" viewBox="0 0 24 24" fill="currentColor"><path d="M23.638 14.904c-1.602 6.43-8.113 10.34-14.542 8.736C2.67 22.05-1.244 15.525.362 9.105 1.962 2.67 8.475-1.243 14.9.358c6.43 1.605 10.342 8.115 8.738 14.546zm-6.35-4.613c.24-1.59-.974-2.45-2.64-3.03l.54-2.153-1.315-.33-.525 2.107c-.345-.087-.7-.169-1.053-.25l.53-2.12-1.32-.33-.54 2.16c-.285-.065-.565-.13-.84-.2l-1.815-.45-.35 1.407s.975.225.955.238c.535.136.63.494.615.78l-.617 2.48c.037.01.085.025.138.047l-.14-.036-.865 3.47c-.067.165-.235.413-.615.32.015.02-.96-.24-.96-.24l-.655 1.515 1.71.426c.32.08.63.163.94.24l-.55 2.19 1.32.33.54-2.17c.36.1.705.19 1.05.273l-.535 2.16 1.32.33.55-2.19c2.24.427 3.93.257 4.64-1.774.57-1.637-.03-2.58-1.217-3.196.854-.193 1.5-.753 1.67-1.907zm-3 4.22c-.404 1.64-3.157.75-4.05.53l.72-2.9c.896.225 3.757.67 3.33 2.37zm.41-4.24c-.37 1.49-2.662.735-3.405.548l.654-2.64c.744.186 3.137.537 2.75 2.084z"/></svg>
                     <span>Bitcoin</span>
                 </button>
-                <button class="support-link support-link-eth" onclick="copyAddress('0x343fC48c2cd1C6332b0df9a58F86e6520a026AC5', 'Ethereum')">
+                <button class="support-link support-link-eth" onclick="copyAddress('0xAe2343c88a657436941181D7dD07DE83d29D24eD', 'Ethereum')">
                     <svg class="support-link-icon" viewBox="0 0 24 24" fill="currentColor"><path d="M11.944 17.97L4.58 13.62 11.943 24l7.37-10.38-7.372 4.35h.003zM12.056 0L4.69 12.223l7.365 4.354 7.365-4.35L12.056 0z"/></svg>
                     <span>Ethereum</span>
                 </button>

webui/static/script.js

@@ -5242,12 +5242,24 @@ function closeSupportModal() {
 
 async function copyAddress(address, cryptoName) {
     try {
-        await navigator.clipboard.writeText(address);
+        // navigator.clipboard requires HTTPS — use fallback for HTTP (Docker)
+        if (navigator.clipboard && window.isSecureContext) {
+            await navigator.clipboard.writeText(address);
+        } else {
+            const textarea = document.createElement('textarea');
+            textarea.value = address;
+            textarea.style.position = 'fixed';
+            textarea.style.opacity = '0';
+            document.body.appendChild(textarea);
+            textarea.select();
+            document.execCommand('copy');
+            document.body.removeChild(textarea);
+        }
         showToast(`${cryptoName} address copied to clipboard`, 'success');
-        console.log(`Copied ${cryptoName} address: ${address}`);
     } catch (error) {
         console.error('Failed to copy address:', error);
-        showToast(`Failed to copy ${cryptoName} address`, 'error');
+        // Show the address so user can copy manually
+        showToast(`${cryptoName}: ${address}`, 'info');
     }
 }