Fix display consistency across all views

Receive view: address now shows color dot and etherscan link,
matching every other address display in the app.

Send view "From": address now includes etherscan link alongside
the existing color dot.

Send view "What to send" (ERC-20 from token view): shows token
symbol as bold heading, then full contract address below with
color dot, copy-on-click, and etherscan link.

Approval views: tx approval From/To addresses now show color
dots and etherscan links instead of bare text. Site approval
address adds etherscan link. Tx approval value uses 4 decimal
places consistent with all other amount displays.

Home tx list: row padding changed from py-1 to py-2, matching
addressDetail and addressToken transaction lists.

src/popup/views/addressDetail.js

@@ -318,7 +318,12 @@ function init(_ctx) {
     $("btn-receive").addEventListener("click", () => {
         const addr = currentAddress();
         const address = addr ? addr.address : "";
+        $("receive-dot").innerHTML = address ? addressDotHtml(address) : "";
         $("receive-address").textContent = address;
+        const link = address ? etherscanAddressLink(address) : "";
+        $("receive-etherscan-link").innerHTML = link
+            ? `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`
+            : "";
         if (address) {
             QRCode.toCanvas($("receive-qr"), address, {
                 width: 200,