Show exact amounts and address titles in transaction detail

- Display full-precision amount (no 4-decimal truncation) in the
  transaction detail view, with native quantity (wei/base units) below
- Both amount and native quantity are click-copyable
- Show wallet/address title above from/to when the address is ours
- Update README Display Consistency to document the exception

README.md

@@ -118,12 +118,20 @@ click it.
 #### Display Consistency
 
 The same data must be formatted identically everywhere it appears. Token and ETH
-amounts are always displayed with exactly 4 decimal places (e.g. "1.0500 ETH",
+amounts are displayed with exactly 4 decimal places (e.g. "1.0500 ETH", "17.1900
-"17.1900 USDT") — in balance lists, transaction lists, transaction details, send
+USDT") in balance lists, transaction lists, send confirmations, and approval
-confirmations, and any other context. Timestamps include both an ISO datetime
+screens. Timestamps include both an ISO datetime and a humanized relative age
-and a humanized relative age wherever shown. If a formatting rule applies in one
+wherever shown. If a formatting rule applies in one place, it applies in every
-place, it applies in every place. Users should never see the same value rendered
+place. Users should never see the same value rendered differently on two
-differently on two screens.
+screens.
+
+**Exception — Transaction Detail view:** The transaction detail screen is the
+authoritative record of a specific transaction and shows the exact, untruncated
+amount with all meaningful decimal places (e.g. "0.00498824598498216 ETH"). It
+also shows the native quantity (e.g. "4988245984982160 wei") below it. Both are
+click-copyable. Truncating to 4 decimals in summary views is acceptable for
+scannability, but the detail view must never discard precision — it is the one
+place the user goes to verify exact figures.
 
 #### Language & Labeling
 

src/popup/index.html

@@ -843,7 +843,11 @@
                 </div>
                 <div class="mb-4">
                     <div class="text-xs text-muted mb-1">Amount</div>
-                    <div id="tx-detail-value" class="text-xs font-bold"></div>
+                    <div id="tx-detail-value" class="text-xs"></div>
+                </div>
+                <div class="mb-4 hidden">
+                    <div class="text-xs text-muted mb-1">Native quantity</div>
+                    <div id="tx-detail-native" class="text-xs"></div>
                 </div>
                 <div class="mb-4">
                     <div class="text-xs text-muted mb-1">From</div>

src/popup/views/transactionDetail.js

@@ -6,6 +6,7 @@ const {
     showView,
     showFlash,
     addressDotHtml,
+    addressTitle,
     escapeHtml,
 } = require("./helpers");
 const { state } = require("../../shared/state");
@@ -67,15 +68,18 @@ function blockieHtml(address) {
     return `<img src="${src}" width="48" height="48" style="image-rendering:pixelated;border-radius:50%;display:inline-block">`;
 }
 
-function txAddressHtml(address, ensName) {
+function txAddressHtml(address, ensName, title) {
     const blockie = blockieHtml(address);
     const dot = addressDotHtml(address);
     const link = `https://etherscan.io/address/${address}`;
     const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
     let html = `<div class="mb-1">${blockie}</div>`;
+    if (title) {
+        html += `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>`;
+    }
     if (ensName) {
         html +=
-            `<div class="flex items-center">${dot}` +
+            `<div class="flex items-center">${title ? "" : dot}` +
             copyableHtml(ensName, "") +
             extLink +
             `</div>` +
@@ -84,7 +88,7 @@ function txAddressHtml(address, ensName) {
             `</div>`;
     } else {
         html +=
-            `<div class="flex items-center">${dot}` +
+            `<div class="flex items-center">${title ? "" : dot}` +
             copyableHtml(address, "break-all") +
             extLink +
             `</div>`;
@@ -105,6 +109,9 @@ function show(tx) {
             from: tx.from,
             to: tx.to,
             value: tx.value,
+            exactValue: tx.exactValue || tx.value,
+            rawAmount: tx.rawAmount || "",
+            rawUnit: tx.rawUnit || "",
             symbol: tx.symbol,
             timestamp: tx.timestamp,
             isError: tx.isError,
@@ -120,11 +127,33 @@ function render() {
     const tx = state.viewData.tx;
     if (!tx) return;
     $("tx-detail-hash").innerHTML = txHashHtml(tx.hash);
-    $("tx-detail-from").innerHTML = txAddressHtml(tx.from, tx.fromEns);
+
-    $("tx-detail-to").innerHTML = txAddressHtml(tx.to, tx.toEns);
+    const fromTitle = addressTitle(tx.from, state.wallets);
-    $("tx-detail-value").textContent = tx.value
+    const toTitle = addressTitle(tx.to, state.wallets);
-        ? tx.value + " " + tx.symbol
+    $("tx-detail-from").innerHTML = txAddressHtml(
+        tx.from,
+        tx.fromEns,
+        fromTitle,
+    );
+    $("tx-detail-to").innerHTML = txAddressHtml(tx.to, tx.toEns, toTitle);
+
+    // Exact amount (full precision, copyable)
+    const exactStr = tx.exactValue
+        ? tx.exactValue + " " + tx.symbol
         : tx.directionLabel + " " + tx.symbol;
+    $("tx-detail-value").innerHTML = copyableHtml(exactStr, "font-bold");
+
+    // Native quantity (raw integer, copyable)
+    const nativeEl = $("tx-detail-native");
+    if (tx.rawAmount && tx.rawUnit) {
+        const nativeStr = tx.rawAmount + " " + tx.rawUnit;
+        nativeEl.innerHTML = copyableHtml(nativeStr, "");
+        nativeEl.parentElement.classList.remove("hidden");
+    } else {
+        nativeEl.innerHTML = "";
+        nativeEl.parentElement.classList.add("hidden");
+    }
+
     $("tx-detail-time").textContent =
         isoDate(tx.timestamp) + " (" + timeAgo(tx.timestamp) + ")";
     $("tx-detail-status").textContent = tx.isError ? "Failed" : "Success";

src/shared/transactions.js

@@ -27,6 +27,9 @@ function parseTx(tx, addrLower) {
     // For contract calls, produce a meaningful label instead of "0.0000 ETH"
     let symbol = "ETH";
     let value = formatTxValue(formatEther(rawWei));
+    let exactValue = formatEther(rawWei);
+    let rawAmount = rawWei;
+    let rawUnit = "wei";
     let direction = from.toLowerCase() === addrLower ? "sent" : "received";
     let directionLabel = direction === "sent" ? "Sent" : "Received";
     if (toIsContract && method && method !== "transfer") {
@@ -38,6 +41,9 @@ function parseTx(tx, addrLower) {
         direction = "contract";
         directionLabel = label;
         value = "";
+        exactValue = "";
+        rawAmount = "";
+        rawUnit = "";
     }
 
     return {
@@ -47,6 +53,9 @@ function parseTx(tx, addrLower) {
         from: from,
         to: to,
         value: value,
+        exactValue: exactValue,
+        rawAmount: rawAmount,
+        rawUnit: rawUnit,
         valueGwei: Math.floor(Number(BigInt(rawWei) / BigInt(1000000000))),
         symbol: symbol,
         direction: direction,
@@ -63,17 +72,21 @@ function parseTokenTransfer(tt, addrLower) {
     const from = tt.from?.hash || "";
     const to = tt.to?.hash || "";
     const decimals = parseInt(tt.total?.decimals || "18", 10);
-    const rawValue = tt.total?.value || "0";
+    const rawVal = tt.total?.value || "0";
     const direction = from.toLowerCase() === addrLower ? "sent" : "received";
+    const sym = tt.token?.symbol || "?";
     return {
         hash: tt.transaction_hash,
         blockNumber: tt.block_number,
         timestamp: Math.floor(new Date(tt.timestamp).getTime() / 1000),
         from: from,
         to: to,
-        value: formatTxValue(formatUnits(rawValue, decimals)),
+        value: formatTxValue(formatUnits(rawVal, decimals)),
+        exactValue: formatUnits(rawVal, decimals),
+        rawAmount: rawVal,
+        rawUnit: sym + " base units (10^-" + decimals + ")",
         valueGwei: null,
-        symbol: tt.token?.symbol || "?",
+        symbol: sym,
         direction: direction,
         directionLabel: direction === "sent" ? "Sent" : "Received",
         isError: false,