feat: add click-to-copy on timestamps in all transaction list views

Adds click-to-copy (copies ISO date string) to timestamp displays in:
- home view (relative time ago)
- addressDetail view (relative time ago)
- addressToken view (relative time ago)
- transactionDetail view (full ISO date)

All timestamps now show dashed underline to indicate copyability,
matching the existing UX pattern for addresses, tx hashes, and
block numbers.

src/popup/views/addressDetail.js

@@ -216,12 +216,19 @@ function renderTransactions(txs) {
         const ago = escapeHtml(timeAgo(tx.timestamp));
         const iso = escapeHtml(isoDate(tx.timestamp));
         html += `<div class="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="text-muted underline decoration-dashed cursor-pointer" title="${iso}" data-copy="${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>`;
         i++;
     }
     list.innerHTML = html;
+    list.querySelectorAll("[data-copy]").forEach((el) => {
+        el.addEventListener("click", (e) => {
+            e.stopPropagation();
+            navigator.clipboard.writeText(el.dataset.copy);
+            showFlash("Copied!");
+        });
+    });
     list.querySelectorAll(".tx-row").forEach((row) => {
         row.addEventListener("click", () => {
             const idx = parseInt(row.dataset.tx, 10);

src/popup/views/addressToken.js

@@ -293,12 +293,19 @@ function renderTransactions(txs) {
         const ago = escapeHtml(timeAgo(tx.timestamp));
         const iso = escapeHtml(isoDate(tx.timestamp));
         html += `<div class="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="text-muted underline decoration-dashed cursor-pointer" title="${iso}" data-copy="${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>`;
         i++;
     }
     list.innerHTML = html;
+    list.querySelectorAll("[data-copy]").forEach((el) => {
+        el.addEventListener("click", (e) => {
+            e.stopPropagation();
+            navigator.clipboard.writeText(el.dataset.copy);
+            showFlash("Copied!");
+        });
+    });
     list.querySelectorAll(".tx-row").forEach((row) => {
         row.addEventListener("click", () => {
             const idx = parseInt(row.dataset.tx, 10);

src/popup/views/home.js

@@ -130,12 +130,19 @@ function renderHomeTxList(ctx) {
         const ago = escapeHtml(timeAgo(tx.timestamp));
         const iso = escapeHtml(isoDate(tx.timestamp));
         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="text-muted underline decoration-dashed cursor-pointer" title="${iso}" data-copy="${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>`;
         i++;
     }
     list.innerHTML = html;
+    list.querySelectorAll("[data-copy]").forEach((el) => {
+        el.addEventListener("click", (e) => {
+            e.stopPropagation();
+            navigator.clipboard.writeText(el.dataset.copy);
+            showFlash("Copied!");
+        });
+    });
     list.querySelectorAll(".home-tx-row").forEach((row) => {
         row.addEventListener("click", () => {
             const idx = parseInt(row.dataset.tx, 10);

src/popup/views/transactionDetail.js

@@ -158,8 +158,9 @@ function render() {
         loadCalldata(tx.hash, tx.to);
     }
 
-    $("tx-detail-time").textContent =
-        isoDate(tx.timestamp) + " (" + timeAgo(tx.timestamp) + ")";
+    const isoStr = isoDate(tx.timestamp);
+    $("tx-detail-time").innerHTML =
+        copyableHtml(isoStr) + " (" + escapeHtml(timeAgo(tx.timestamp)) + ")";
     $("tx-detail-status").textContent = tx.isError ? "Failed" : "Success";
     showView("transaction");