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/home.js

@@ -145,7 +145,7 @@ function renderHomeTxList(ctx) {
         const opacity = tx.isError ? " opacity:0.5;" : "";
         const ago = escapeHtml(timeAgo(tx.timestamp));
         const iso = escapeHtml(isoDate(tx.timestamp));
-        html += `<div class="home-tx-row py-1 border-b border-border-light text-xs cursor-pointer hover:bg-hover" data-tx="${i}" style="${opacity}">`;
+        html += `<div class="home-tx-row py-2 border-b border-border-light text-xs cursor-pointer hover:bg-hover" data-tx="${i}" style="${opacity}">`;
         html += `<div class="flex justify-between"><span class="text-muted" title="${iso}">${ago}</span><span>${dirLabel}${err}</span></div>`;
         html += `<div class="flex justify-between"><span class="flex items-center">${dot}${addrStr}</span><span>${amountStr}</span></div>`;
         html += `</div>`;
@@ -417,7 +417,12 @@ function init(ctx) {
         }
         const addr = currentAddress();
         const address = addr ? addr.address : "";
+        $("receive-dot").innerHTML = address ? addressDotHtml(address) : "";
         $("receive-address").textContent = address;
+        const link = address ? `https://etherscan.io/address/${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,