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/index.html

@@ -552,10 +552,11 @@
                 <div class="flex justify-center mb-3">
                     <canvas id="receive-qr"></canvas>
                 </div>
-                <div
-                    id="receive-address"
-                    class="border border-border p-2 break-all select-all mb-3"
-                ></div>
+                <div class="border border-border p-2 break-all mb-3 text-xs">
+                    <span id="receive-dot"></span>
+                    <span id="receive-address" class="select-all"></span>
+                    <span id="receive-etherscan-link"></span>
+                </div>
                 <button
                     id="btn-receive-copy"
                     class="border border-border px-2 py-1 hover:bg-fg hover:text-bg cursor-pointer"