fix: use null instead of 0 for testnet token USD fallback

When price is null (testnet), the fallback value 0 caused formatUsd()
to display "$0.00" instead of hiding the USD value. Using null makes
formatUsd() return an empty string, so the UI correctly shows no USD
on the token detail view.

src/background/index.js

@@ -4,7 +4,6 @@
 
 const { DEFAULT_RPC_URL } = require("../shared/constants");
 const { SUPPORTED_CHAIN_IDS, networkByChainId } = require("../shared/networks");
-const { onChainSwitch } = require("../shared/chainSwitch");
 const { getBytes } = require("ethers");
 const {
     state,
@@ -346,8 +345,12 @@ async function handleRpc(method, params, origin) {
             return { result: null };
         }
         if (SUPPORTED_CHAIN_IDS.has(chainId)) {
+            // Switch to the requested network
             const target = networkByChainId(chainId);
-            await onChainSwitch(target.id);
+            state.networkId = target.id;
+            state.rpcUrl = target.defaultRpcUrl;
+            state.blockscoutUrl = target.defaultBlockscoutUrl;
+            await saveState();
             broadcastChainChanged(target.chainId);
             return { result: null };
         }

src/popup/index.js

@@ -2,22 +2,10 @@
 // Loads state, initializes views, triggers first render.
 
 const { DEBUG } = require("../shared/constants");
-const {
+const { state, saveState, loadState } = require("../shared/state");
-    state,
-    saveState,
-    loadState,
-    currentNetwork,
-} = require("../shared/state");
 const { refreshPrices } = require("../shared/prices");
 const { refreshBalances } = require("../shared/balances");
-const {
+const { $, showView } = require("./views/helpers");
-    $,
-    showView,
-    setRenderMain,
-    pushCurrentView,
-    goBack,
-    clearViewStack,
-} = require("./views/helpers");
 const { applyTheme } = require("./theme");
 
 const home = require("./views/home");
@@ -65,42 +53,15 @@ async function doRefreshAndRender() {
 const ctx = {
     renderWalletList,
     doRefreshAndRender,
-    showAddWalletView: () => {
+    showAddWalletView: () => addWallet.show(),
-        pushCurrentView();
+    showAddressDetail: () => addressDetail.show(),
-        addWallet.show();
+    showAddressToken: () => addressToken.show(),
-    },
+    showAddTokenView: () => addToken.show(),
-    showAddressDetail: () => {
+    showConfirmTx: (txInfo) => confirmTx.show(txInfo),
-        pushCurrentView();
+    showReceive: () => receive.show(),
-        addressDetail.show();
+    showTransactionDetail: (tx) => transactionDetail.show(tx),
-    },
+    showSettingsView: () => settings.show(),
-    showAddressToken: () => {
+    showSettingsAddTokenView: () => settingsAddToken.show(),
-        pushCurrentView();
-        addressToken.show();
-    },
-    showAddTokenView: () => {
-        pushCurrentView();
-        addToken.show();
-    },
-    showConfirmTx: (txInfo) => {
-        pushCurrentView();
-        confirmTx.show(txInfo);
-    },
-    showReceive: () => {
-        pushCurrentView();
-        receive.show();
-    },
-    showTransactionDetail: (tx) => {
-        pushCurrentView();
-        transactionDetail.show(tx);
-    },
-    showSettingsView: () => {
-        pushCurrentView();
-        settings.show();
-    },
-    showSettingsAddTokenView: () => {
-        pushCurrentView();
-        settingsAddToken.show();
-    },
 };
 
 // Views that can be fully re-rendered from persisted state.
@@ -206,25 +167,18 @@ function fallbackView() {
 }
 
 async function init() {
-    await loadState();
+    if (DEBUG) {
-    applyTheme(state.theme);
-
-    const net = currentNetwork();
-    if (DEBUG || net.isTestnet) {
         const banner = document.createElement("div");
         banner.id = "debug-banner";
-        if (DEBUG && net.isTestnet) {
-            banner.textContent = "DEBUG / INSECURE [TESTNET]";
-        } else if (net.isTestnet) {
-            banner.textContent = "[TESTNET]";
-        } else {
         banner.textContent = "DEBUG / INSECURE";
-        }
         banner.style.cssText =
             "background:#c00;color:#fff;text-align:center;font-size:10px;padding:1px 0;font-family:monospace;position:sticky;top:0;z-index:9999;";
         document.body.prepend(banner);
     }
 
+    await loadState();
+    applyTheme(state.theme);
+
     // Auto-default active address
     if (
         state.activeAddress === null &&
@@ -254,15 +208,13 @@ async function init() {
                 .getElementById("view-settings")
                 .classList.contains("hidden")
         ) {
-            goBack();
+            renderWalletList();
+            showView("main");
             return;
         }
-        pushCurrentView();
         settings.show();
     });
 
-    setRenderMain(renderWalletList);
-
     welcome.init(ctx);
     addWallet.init(ctx);
     home.init(ctx);

src/popup/views/addToken.js

@@ -1,4 +1,4 @@
-const { $, showFlash, goBack } = require("./helpers");
+const { $, showView, showFlash } = require("./helpers");
 const { getTopTokens } = require("../../shared/tokenList");
 const { state, saveState } = require("../../shared/state");
 const { lookupTokenInfo } = require("../../shared/balances");
@@ -59,12 +59,7 @@ function init(ctx) {
             });
             await saveState();
             ctx.doRefreshAndRender();
-            // Pop the stack (back to address detail) and re-render it
+            ctx.showAddressDetail();
-            // so the newly added token is visible immediately.
-            if (state.viewStack.length > 0) {
-                state.viewStack.pop();
-            }
-            require("./addressDetail").show();
         } catch (e) {
             const detail = e.shortMessage || e.message || String(e);
             log.errorf("Token lookup failed for", contractAddr, detail);
@@ -74,9 +69,7 @@ function init(ctx) {
         }
     });
 
-    $("btn-add-token-back").addEventListener("click", () => {
+    $("btn-add-token-back").addEventListener("click", ctx.showAddressDetail);
-        goBack();
-    });
 }
 
 module.exports = { init, show };

src/popup/views/addWallet.js

@@ -1,4 +1,4 @@
-const { $, showView, showFlash, goBack, clearViewStack } = require("./helpers");
+const { $, showView, showFlash } = require("./helpers");
 const {
     generateMnemonic,
     hdWalletFromMnemonic,
@@ -143,7 +143,6 @@ async function importMnemonic(ctx) {
     state.wallets.push(wallet);
     state.hasWallet = true;
     await saveState();
-    clearViewStack();
     ctx.renderWalletList();
     showView("main");
 
@@ -199,7 +198,6 @@ async function importPrivateKey(ctx) {
     });
     state.hasWallet = true;
     await saveState();
-    clearViewStack();
     ctx.renderWalletList();
     showView("main");
 
@@ -251,7 +249,6 @@ async function importXprvKey(ctx) {
     state.wallets.push(wallet);
     state.hasWallet = true;
     await saveState();
-    clearViewStack();
     ctx.renderWalletList();
     showView("main");
 
@@ -300,7 +297,12 @@ function init(ctx) {
 
     // Back button
     $("btn-add-wallet-back").addEventListener("click", () => {
-        goBack();
+        if (!state.hasWallet) {
+            showView("welcome");
+        } else {
+            ctx.renderWalletList();
+            showView("main");
+        }
     });
 }
 

src/popup/views/addressDetail.js

@@ -8,12 +8,13 @@ const {
     addressTitle,
     escapeHtml,
     truncateMiddle,
-    renderAddressHtml,
-    attachCopyHandlers,
-    goBack,
-    pushCurrentView,
 } = require("./helpers");
-const { state, currentAddress, saveState } = require("../../shared/state");
+const {
+    state,
+    currentAddress,
+    saveState,
+    currentNetwork,
+} = require("../../shared/state");
 const { formatUsd, getAddressValueUsd } = require("../../shared/prices");
 const {
     fetchRecentTransactions,
@@ -32,6 +33,17 @@ const { getSignerForAddress } = require("../../shared/wallet");
 
 let ctx;
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
+function etherscanAddressLink(address) {
+    return `${currentNetwork().explorerUrl}/address/${address}`;
+}
+
 function show() {
     state.selectedToken = null;
     const wallet = state.wallets[state.selectedWallet];
@@ -49,18 +61,22 @@ function show() {
     img.style.imageRendering = "pixelated";
     img.style.borderRadius = "50%";
     blockieEl.appendChild(img);
-    const addrTitle = addressTitle(addr.address, state.wallets);
+    $("address-dot").innerHTML = addressDotHtml(addr.address);
-    $("address-line").innerHTML = renderAddressHtml(addr.address, {
+    $("address-full").dataset.full = addr.address;
-        title: addrTitle,
+    $("address-full").textContent = addr.address;
-        ensName: addr.ensName,
+    const addrLink = etherscanAddressLink(addr.address);
-    });
+    $("address-etherscan-link").innerHTML =
-    $("address-line").dataset.full = addr.address;
+        `<a href="${addrLink}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
-    attachCopyHandlers($("address-line"));
     const usdTotal = formatUsd(getAddressValueUsd(addr));
     $("address-usd-total").innerHTML = usdTotal || "&nbsp;";
     const ensEl = $("address-ens");
-    // ENS is now shown inside renderAddressHtml, hide the separate element
+    if (addr.ensName) {
+        ensEl.innerHTML =
+            addressDotHtml(addr.address) + escapeHtml(addr.ensName);
+        ensEl.classList.remove("hidden");
+    } else {
         ensEl.classList.add("hidden");
+    }
     $("address-balances").innerHTML = balanceLinesForAddress(
         addr,
         state.trackedTokens,
@@ -247,9 +263,18 @@ function renderTransactions(txs) {
 
 function init(_ctx) {
     ctx = _ctx;
+    $("address-full").addEventListener("click", () => {
+        const addr = $("address-full").dataset.full;
+        if (addr) {
+            navigator.clipboard.writeText(addr);
+            showFlash("Copied!");
+            flashCopyFeedback($("address-full"));
+        }
+    });
 
     $("btn-address-back").addEventListener("click", () => {
-        goBack();
+        ctx.renderWalletList();
+        showView("main");
     });
 
     $("btn-send").addEventListener("click", () => {
@@ -267,7 +292,6 @@ function init(_ctx) {
         $("send-token-static").classList.add("hidden");
         updateSendBalance();
         resetSendValidation();
-        pushCurrentView();
         showView("send");
     });
 
@@ -297,7 +321,6 @@ function init(_ctx) {
     $("btn-export-privkey").addEventListener("click", () => {
         moreDropdown.classList.add("hidden");
         moreBtn.classList.remove("bg-fg", "text-bg");
-        pushCurrentView();
         const wallet = state.wallets[state.selectedWallet];
         const addr = wallet.addresses[state.selectedAddress];
         const blockieEl = $("export-privkey-jazzicon");
@@ -311,9 +334,9 @@ function init(_ctx) {
         blockieEl.appendChild(bImg);
         $("export-privkey-title").textContent =
             wallet.name + " \u2014 Address " + (state.selectedAddress + 1);
-        const exportAddrContainer = $("export-privkey-dot").parentElement;
+        $("export-privkey-dot").innerHTML = addressDotHtml(addr.address);
-        exportAddrContainer.innerHTML = renderAddressHtml(addr.address);
+        $("export-privkey-address").textContent = addr.address;
-        attachCopyHandlers(exportAddrContainer);
+        $("export-privkey-address").dataset.full = addr.address;
         $("export-privkey-password").value = "";
         $("export-privkey-flash").textContent = "";
         $("export-privkey-flash").style.visibility = "hidden";
@@ -367,10 +390,19 @@ function init(_ctx) {
         }
     });
 
+    $("export-privkey-address").addEventListener("click", () => {
+        const full = $("export-privkey-address").dataset.full;
+        if (full) {
+            navigator.clipboard.writeText(full);
+            showFlash("Copied!");
+            flashCopyFeedback($("export-privkey-address"));
+        }
+    });
+
     $("btn-export-privkey-back").addEventListener("click", () => {
         $("export-privkey-value").textContent = "";
         $("export-privkey-password").value = "";
-        goBack();
+        show();
     });
 }
 

src/popup/views/addressToken.js

@@ -11,12 +11,13 @@ const {
     escapeHtml,
     truncateMiddle,
     balanceLine,
-    renderAddressHtml,
-    attachCopyHandlers,
-    goBack,
-    pushCurrentView,
 } = require("./helpers");
-const { state, currentAddress, saveState } = require("../../shared/state");
+const {
+    state,
+    currentAddress,
+    saveState,
+    currentNetwork,
+} = require("../../shared/state");
 const { TOKEN_BY_ADDRESS, resolveSymbol } = require("../../shared/tokenList");
 const {
     formatUsd,
@@ -38,6 +39,17 @@ const makeBlockie = require("ethereum-blockies-base64");
 
 let ctx;
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
+function etherscanAddressLink(address) {
+    return `${currentNetwork().explorerUrl}/address/${address}`;
+}
+
 function isoDate(timestamp) {
     const d = new Date(timestamp * 1000);
     const pad = (n) => String(n).padStart(2, "0");
@@ -141,13 +153,12 @@ function show() {
     blockieEl.appendChild(img);
 
     // Address line
-    const addrTitle = addressTitle(addr.address, state.wallets);
+    $("address-token-dot").innerHTML = addressDotHtml(addr.address);
-    $("address-token-line").innerHTML = renderAddressHtml(addr.address, {
+    $("address-token-full").dataset.full = addr.address;
-        title: addrTitle,
+    $("address-token-full").textContent = addr.address;
-        ensName: addr.ensName,
+    const addrLink = etherscanAddressLink(addr.address);
-    });
+    $("address-token-etherscan-link").innerHTML =
-    $("address-token-line").dataset.full = addr.address;
+        `<a href="${addrLink}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
-    attachCopyHandlers($("address-token-line"));
 
     // USD total for this token only
     const usdVal = price ? amount * price : null;
@@ -187,9 +198,15 @@ function show() {
                     ? knownToken.decimals
                     : null;
         const tokenHolders = tb && tb.holders != null ? tb.holders : null;
+        const dot = addressDotHtml(tokenId);
+        const tokenLink = `${currentNetwork().explorerUrl}/token/${escapeHtml(tokenId)}`;
         const projectUrl = knownToken && knownToken.url ? knownToken.url : null;
         let infoHtml = `<div class="font-bold mb-2">Contract Address</div>`;
-        infoHtml += `<div class="mb-2">${renderAddressHtml(tokenId)}</div>`;
+        infoHtml +=
+            `<div class="flex items-center mb-2">${dot}` +
+            `<span class="break-all underline decoration-dashed cursor-pointer" id="address-token-contract-copy" data-copy="${escapeHtml(tokenId)}">${escapeHtml(tokenId)}</span>` +
+            `<a href="${tokenLink}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>` +
+            `</div>`;
         if (tokenName)
             infoHtml += `<div class="mb-1"><span class="text-muted">Name:</span> ${tokenName}</div>`;
         if (tokenSymbol)
@@ -201,7 +218,6 @@ function show() {
         if (projectUrl)
             infoHtml += `<div class="mb-1"><span class="text-muted">Website:</span> <a href="${escapeHtml(projectUrl)}" target="_blank" rel="noopener" class="underline decoration-dashed">${escapeHtml(projectUrl)}</a></div>`;
         contractInfo.innerHTML = infoHtml;
-        attachCopyHandlers(contractInfo);
         contractInfo.classList.remove("hidden");
     } else {
         contractInfo.innerHTML = "";
@@ -323,6 +339,15 @@ function renderTransactions(txs) {
 
 function init(_ctx) {
     ctx = _ctx;
+    $("address-token-full").addEventListener("click", () => {
+        const addr = $("address-token-full").dataset.full;
+        if (addr) {
+            navigator.clipboard.writeText(addr);
+            showFlash("Copied!");
+            flashCopyFeedback($("address-token-full"));
+        }
+    });
+
     $("address-token-contract-info").addEventListener("click", (e) => {
         const copyEl = e.target.closest("[data-copy]");
         if (copyEl) {
@@ -333,7 +358,7 @@ function init(_ctx) {
     });
 
     $("btn-address-token-back").addEventListener("click", () => {
-        goBack();
+        ctx.showAddressDetail();
     });
 
     $("btn-address-token-send").addEventListener("click", () => {
@@ -360,14 +385,28 @@ function init(_ctx) {
         $("send-token").classList.add("hidden");
         let staticHtml = `<div class="font-bold">${escapeHtml(currentSymbol)}</div>`;
         if (tokenId !== "ETH") {
-            staticHtml += `<div class="text-xs">${renderAddressHtml(tokenId)}</div>`;
+            const dot = addressDotHtml(tokenId);
+            const link = `${currentNetwork().explorerUrl}/token/${tokenId}`;
+            const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
+            staticHtml +=
+                `<div class="flex items-center text-xs">${dot}` +
+                `<span class="break-all underline decoration-dashed cursor-pointer" data-copy="${escapeHtml(tokenId)}">${escapeHtml(tokenId)}</span>` +
+                extLink +
+                `</div>`;
         }
         $("send-token-static").innerHTML = staticHtml;
         $("send-token-static").classList.remove("hidden");
-        attachCopyHandlers($("send-token-static"));
+        // Attach copy handler for the contract address
+        const copyEl = $("send-token-static").querySelector("[data-copy]");
+        if (copyEl) {
+            copyEl.addEventListener("click", () => {
+                navigator.clipboard.writeText(copyEl.dataset.copy);
+                showFlash("Copied!");
+                flashCopyFeedback(copyEl);
+            });
+        }
         updateSendBalance();
         resetSendValidation();
-        pushCurrentView();
         showView("send");
     });
 

src/popup/views/approval.js

@@ -1,16 +1,14 @@
 const {
     $,
+    addressDotHtml,
     addressTitle,
     escapeHtml,
     showView,
     showError,
     hideError,
-    renderAddressHtml,
-    attachCopyHandlers,
 } = require("./helpers");
 const { state, saveState, currentNetwork } = require("../../shared/state");
 const { formatEther, formatUnits, Interface, toUtf8String } = require("ethers");
-const { getPrice, formatUsd } = require("../../shared/prices");
 const { ERC20_ABI } = require("../../shared/constants");
 const { TOKEN_BY_ADDRESS } = require("../../shared/tokenList");
 const txStatus = require("./txStatus");
@@ -18,11 +16,28 @@ const uniswap = require("../../shared/uniswap");
 const runtime =
     typeof browser !== "undefined" ? browser.runtime : chrome.runtime;
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 const erc20Iface = new Interface(ERC20_ABI);
 
 function approvalAddressHtml(address) {
+    const dot = addressDotHtml(address);
+    const link = `${currentNetwork().explorerUrl}/address/${address}`;
+    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
     const title = addressTitle(address, state.wallets);
-    return renderAddressHtml(address, { title });
+    let html = "";
+    if (title) {
+        html += `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>`;
+        html += `<div class="break-all">${escapeHtml(address)}${extLink}</div>`;
+    } else {
+        html += `<div class="flex items-center">${dot}<span class="break-all">${escapeHtml(address)}</span>${extLink}</div>`;
+    }
+    return html;
 }
 
 function formatTxValue(val) {
@@ -37,6 +52,10 @@ function tokenLabel(address) {
     return t ? t.symbol : null;
 }
 
+function etherscanTokenLink(address) {
+    return `${currentNetwork().explorerUrl}/token/${address}`;
+}
+
 // Try to decode calldata using known ABIs.
 // Returns { name, description, details } or null.
 function decodeCalldata(data, toAddress) {
@@ -215,19 +234,17 @@ function showTxApproval(details) {
             toHtml += `<div class="font-bold mb-1">${escapeHtml(symbol)}</div>`;
         }
         toHtml += approvalAddressHtml(toAddr);
+        if (symbol) {
+            const link = etherscanTokenLink(toAddr);
+            toHtml = toHtml.replace("</div>", "") + ""; // approvalAddressHtml already has etherscan link
+        }
         $("approve-tx-to").innerHTML = toHtml;
     } else {
         $("approve-tx-to").innerHTML = escapeHtml("(contract creation)");
     }
 
-    const ethValueFormatted = formatTxValue(
-        formatEther(details.txParams.value || "0"),
-    );
-    const ethPrice = getPrice("ETH");
-    const ethUsd = ethPrice ? parseFloat(ethValueFormatted) * ethPrice : null;
-    const usdStr = formatUsd(ethUsd);
     $("approve-tx-value").textContent =
-        ethValueFormatted + " ETH" + (usdStr ? " (" + usdStr + ")" : "");
+        formatTxValue(formatEther(details.txParams.value || "0")) + " ETH";
 
     // Decode calldata (reuse decoded from above)
     const decodedEl = $("approve-tx-decoded");
@@ -242,9 +259,12 @@ function showTxApproval(details) {
             detailsHtml += `<div class="text-muted">${escapeHtml(d.label)}</div>`;
             if (d.address) {
                 if (d.isToken) {
+                    const tLink = etherscanTokenLink(d.address);
                     detailsHtml += `<div class="font-bold">${escapeHtml(tokenLabel(d.address) || "Unknown token")}</div>`;
-                }
                     detailsHtml += approvalAddressHtml(d.address);
+                } else {
+                    detailsHtml += approvalAddressHtml(d.address);
+                }
             } else {
                 detailsHtml += `<div class="font-bold">${escapeHtml(d.value)}</div>`;
             }
@@ -268,7 +288,6 @@ function showTxApproval(details) {
     hideError("approve-tx-error");
 
     showView("approve-tx");
-    attachCopyHandlers("view-approve-tx");
 }
 
 function decodeHexMessage(hex) {
@@ -366,7 +385,6 @@ function showSignApproval(details) {
     $("btn-approve-sign").classList.remove("text-muted");
 
     showView("approve-sign");
-    attachCopyHandlers("view-approve-sign");
 }
 
 function show(id) {
@@ -394,7 +412,6 @@ function show(id) {
         $("approve-address").innerHTML = approvalAddressHtml(
             state.activeAddress,
         );
-        attachCopyHandlers("view-approve-site");
         $("approve-remember").checked = state.rememberSiteChoice;
     });
 }

src/popup/views/confirmTx.js

@@ -17,10 +17,8 @@ const {
     showFlash,
     flashCopyFeedback,
     addressTitle,
+    addressDotHtml,
     escapeHtml,
-    renderAddressHtml,
-    attachCopyHandlers,
-    goBack,
 } = require("./helpers");
 const { state, currentNetwork } = require("../../shared/state");
 const { getSignerForAddress } = require("../../shared/wallet");
@@ -36,6 +34,13 @@ const { log } = require("../../shared/log");
 const makeBlockie = require("ethereum-blockies-base64");
 const txStatus = require("./txStatus");
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 let pendingTx = null;
 
 function restore() {
@@ -45,6 +50,14 @@ function restore() {
     }
 }
 
+function etherscanTokenLink(address) {
+    return `${currentNetwork().explorerUrl}/token/${address}`;
+}
+
+function etherscanAddressLink(address) {
+    return `${currentNetwork().explorerUrl}/address/${address}`;
+}
+
 function blockieHtml(address) {
     const src = makeBlockie(address);
     return `<img src="${src}" width="48" height="48" style="image-rendering:pixelated;border-radius:50%;display:inline-block">`;
@@ -52,10 +65,22 @@ function blockieHtml(address) {
 
 function confirmAddressHtml(address, ensName, title) {
     const blockie = blockieHtml(address);
-    return (
+    const dot = addressDotHtml(address);
-        `<div class="mb-1">${blockie}</div>` +
+    const link = etherscanAddressLink(address);
-        renderAddressHtml(address, { title, ensName })
+    const extLink = `<a href="${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 font-bold">${title ? "" : dot}${escapeHtml(ensName)}</div>`;
+    }
+    html +=
+        `<div class="flex items-center">${title || ensName ? "" : dot}` +
+        `<span class="break-all">${escapeHtml(address)}</span>` +
+        extLink +
+        `</div>`;
+    return html;
 }
 
 function valueWithUsd(text, usdAmount) {
@@ -82,12 +107,23 @@ function show(txInfo) {
     // Token contract section (ERC-20 only)
     const tokenSection = $("confirm-token-section");
     if (isErc20) {
-        $("confirm-token-contract").innerHTML = renderAddressHtml(
+        const dot = addressDotHtml(txInfo.token);
-            txInfo.token,
+        const link = etherscanTokenLink(txInfo.token);
-            {},
+        $("confirm-token-contract").innerHTML =
-        );
+            `<div class="flex items-center">${dot}` +
+            `<span class="break-all underline decoration-dashed cursor-pointer" data-copy="${escapeHtml(txInfo.token)}">${escapeHtml(txInfo.token)}</span>` +
+            `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>` +
+            `</div>`;
         tokenSection.classList.remove("hidden");
-        attachCopyHandlers(tokenSection);
+        // Attach click-to-copy on the contract address
+        const copyEl = tokenSection.querySelector("[data-copy]");
+        if (copyEl) {
+            copyEl.onclick = () => {
+                navigator.clipboard.writeText(copyEl.dataset.copy);
+                showFlash("Copied!");
+                flashCopyFeedback(copyEl);
+            };
+        }
     } else {
         tokenSection.classList.add("hidden");
     }
@@ -207,7 +243,6 @@ function show(txInfo) {
     $("confirm-fee-amount").textContent = "Estimating...";
     state.viewData = { pendingTx: txInfo };
     showView("confirm-tx");
-    attachCopyHandlers("view-confirm-tx");
 
     // Reset async warnings to hidden (space always reserved, no layout shift)
     $("confirm-recipient-warning").style.visibility = "hidden";
@@ -356,7 +391,7 @@ function init(ctx) {
     });
 
     $("btn-confirm-back").addEventListener("click", () => {
-        goBack();
+        showView("send");
     });
 }
 

src/popup/views/deleteWallet.js

@@ -1,4 +1,4 @@
-const { $, showView, showFlash, goBack, clearViewStack } = require("./helpers");
+const { $, showView, showFlash } = require("./helpers");
 const { state, saveState } = require("../../shared/state");
 const { decryptWithPassword } = require("../../shared/vault");
 
@@ -21,7 +21,7 @@ function init(_ctx) {
 
     $("btn-delete-wallet-back").addEventListener("click", () => {
         deleteWalletIndex = null;
-        goBack();
+        ctx.showSettingsView();
     });
 
     $("btn-delete-wallet-confirm").addEventListener("click", async () => {
@@ -77,7 +77,6 @@ function init(_ctx) {
             state.selectedWallet = null;
             state.selectedAddress = null;
             state.activeAddress = null;
-            clearViewStack();
             await saveState();
             showView("welcome");
         } else {
@@ -87,14 +86,8 @@ function init(_ctx) {
             state.activeAddress =
                 state.wallets[0].addresses[0]?.address || null;
             await saveState();
-            // Reset stack to [main] so Settings back goes home.
-            // Use require() lazily to avoid circular dependency
-            // (settings.js requires deleteWallet.js).
-            clearViewStack();
-            state.viewStack.push("main");
             ctx.renderWalletList();
-            const settings = require("./settings");
+            ctx.showSettingsView();
-            settings.show();
             showFlash("Wallet deleted.");
         }
     });

src/popup/views/helpers.js

@@ -6,7 +6,7 @@ const {
     getPrice,
     getAddressValueUsd,
 } = require("../../shared/prices");
-const { state, saveState, currentNetwork } = require("../../shared/state");
+const { state, saveState } = require("../../shared/state");
 
 // When views are added, removed, or transitions between them change,
 // update the view-navigation documentation in README.md to match.
@@ -59,57 +59,12 @@ function showView(name) {
     clearFlash();
     state.currentView = name;
     saveState();
-    const net = currentNetwork();
+    if (DEBUG) {
-    if (DEBUG || net.isTestnet) {
         const banner = document.getElementById("debug-banner");
         if (banner) {
-            if (DEBUG && net.isTestnet) {
-                banner.textContent =
-                    "DEBUG / INSECURE [TESTNET] (" + name + ")";
-            } else if (net.isTestnet) {
-                banner.textContent = "[TESTNET]";
-            } else {
             banner.textContent = "DEBUG / INSECURE (" + name + ")";
         }
     }
-    }
-}
-
-// Callback to re-render the main/home view when navigating back to it.
-// Set once by index.js via setRenderMain().
-let _renderMain = null;
-
-function setRenderMain(fn) {
-    _renderMain = fn;
-}
-
-// Push the current view onto the navigation stack so goBack() can
-// return to it.  Call this before any forward navigation.
-function pushCurrentView() {
-    if (state.currentView) {
-        state.viewStack.push(state.currentView);
-    }
-}
-
-// Pop the navigation stack and show the previous view.  If the stack
-// is empty, fall back to the main (home) view.
-function goBack() {
-    let target;
-    if (state.viewStack.length > 0) {
-        target = state.viewStack.pop();
-    } else {
-        target = "main";
-    }
-    if (target === "main" && _renderMain) {
-        _renderMain();
-    }
-    showView(target);
-}
-
-// Clear the entire navigation stack (used when resetting to root,
-// e.g. after adding or deleting a wallet).
-function clearViewStack() {
-    state.viewStack = [];
 }
 
 let flashTimer = null;
@@ -253,9 +208,21 @@ function addressTitle(address, wallets) {
 // Render an address with color dot, optional ENS name, optional title,
 // and optional truncation. Title and ENS are shown as bold labels above
 // the full address.
-// Delegates to renderAddressHtml for consistent output.
 function formatAddressHtml(address, ensName, maxLen, title) {
-    return renderAddressHtml(address, { title, ensName, maxLen });
+    const dot = addressDotHtml(address);
+    const displayAddr = maxLen ? truncateMiddle(address, maxLen) : address;
+    if (title || ensName) {
+        let html = "";
+        if (title) {
+            html += `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>`;
+        }
+        if (ensName) {
+            html += `<div class="flex items-center font-bold">${title ? "" : dot}${escapeHtml(ensName)}</div>`;
+        }
+        html += `<div class="break-all">${escapeHtml(displayAddr)}</div>`;
+        return html;
+    }
+    return `<div class="flex items-center">${dot}<span class="break-all">${escapeHtml(displayAddr)}</span></div>`;
 }
 
 function isoDate(timestamp) {
@@ -314,91 +281,6 @@ function timeAgo(timestamp) {
     return years + " year" + (years !== 1 ? "s" : "") + " ago";
 }
 
-// Shared external-link icon SVG used across all views.
-const EXT_ICON =
-    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
-    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
-    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
-    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
-    `</svg></span>`;
-
-function etherscanAddressUrl(address) {
-    return `${currentNetwork().explorerUrl}/address/${address}`;
-}
-
-function etherscanLinkHtml(url) {
-    return (
-        `<a href="${url}" target="_blank" rel="noopener" ` +
-        `class="inline-flex items-center">${EXT_ICON}</a>`
-    );
-}
-
-// Render a copyable text span with dashed underline affordance.
-// The caller must attach click handlers via attachCopyHandlers() or
-// manually wire up [data-copy] elements after inserting the HTML.
-function copyableHtml(text, extraClass) {
-    const cls =
-        "underline decoration-dashed cursor-pointer" +
-        (extraClass ? " " + extraClass : "");
-    return `<span class="${cls}" data-copy="${escapeHtml(text)}">${escapeHtml(text)}</span>`;
-}
-
-// Attach click-to-copy handlers to all [data-copy] elements within
-// a container.  Safe to call multiple times on the same container.
-function attachCopyHandlers(container) {
-    const root =
-        typeof container === "string"
-            ? document.getElementById(container)
-            : container;
-    if (!root) return;
-    root.querySelectorAll("[data-copy]").forEach((el) => {
-        el.onclick = () => {
-            navigator.clipboard.writeText(el.dataset.copy);
-            showFlash("Copied!");
-            flashCopyFeedback(el);
-        };
-    });
-}
-
-// Unified address rendering.
-//
-// Produces consistent HTML for any Ethereum address:
-//   • Color dot
-//   • Optional title (e.g. "Wallet 1 — Address 2") shown bold above address
-//   • Optional ENS name shown bold above address
-//   • Full address (or truncated via maxLen) with dashed-underline click-to-copy
-//   • Etherscan external link icon
-//
-// Options object:
-//   title    — wallet title string (from addressTitle)
-//   ensName  — ENS name string
-//   maxLen   — if set, truncate address display (min 32 chars enforced)
-//   noLink   — if true, omit etherscan link
-//
-// After inserting the returned HTML into the DOM, call
-// attachCopyHandlers() on the parent to wire up click-to-copy.
-function renderAddressHtml(address, opts) {
-    const { title, ensName, maxLen, noLink } = opts || {};
-    const dot = addressDotHtml(address);
-    const displayAddr = maxLen ? truncateMiddle(address, maxLen) : address;
-    const link = etherscanAddressUrl(address);
-    const extLink = noLink ? "" : etherscanLinkHtml(link);
-
-    let html = "";
-    if (title) {
-        html += `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>`;
-    }
-    if (ensName) {
-        html += `<div class="flex items-center font-bold">${title ? "" : dot}${escapeHtml(ensName)}</div>`;
-    }
-    if (title || ensName) {
-        html += `<div class="flex items-center">${copyableHtml(displayAddr, "break-all")}${extLink}</div>`;
-    } else {
-        html += `<div class="flex items-center">${dot}${copyableHtml(displayAddr, "break-all")}${extLink}</div>`;
-    }
-    return html;
-}
-
 function flashCopyFeedback(el) {
     if (!el) return;
     el.classList.remove("copy-flash-fade");
@@ -417,10 +299,6 @@ module.exports = {
     showError,
     hideError,
     showView,
-    setRenderMain,
-    pushCurrentView,
-    goBack,
-    clearViewStack,
     showFlash,
     flashCopyFeedback,
     balanceLine,
@@ -430,12 +308,6 @@ module.exports = {
     escapeHtml,
     addressTitle,
     formatAddressHtml,
-    renderAddressHtml,
-    copyableHtml,
-    attachCopyHandlers,
-    etherscanAddressUrl,
-    etherscanLinkHtml,
-    EXT_ICON,
     truncateMiddle,
     isoDate,
     timeAgo,

src/popup/views/home.js

@@ -10,11 +10,13 @@ const {
     addressTitle,
     escapeHtml,
     truncateMiddle,
-    renderAddressHtml,
-    attachCopyHandlers,
-    pushCurrentView,
 } = require("./helpers");
-const { state, saveState, currentAddress } = require("../../shared/state");
+const {
+    state,
+    saveState,
+    currentAddress,
+    currentNetwork,
+} = require("../../shared/state");
 const {
     updateSendBalance,
     renderSendTokenSelect,
@@ -72,12 +74,28 @@ function renderTotalValue() {
     }
 }
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 function renderActiveAddress() {
     const el = $("active-address-display");
     if (!el) return;
     if (state.activeAddress) {
-        el.innerHTML = renderAddressHtml(state.activeAddress);
+        const addr = state.activeAddress;
-        attachCopyHandlers(el);
+        const dot = addressDotHtml(addr);
+        const link = `${currentNetwork().explorerUrl}/address/${addr}`;
+        el.innerHTML =
+            `<span class="underline decoration-dashed cursor-pointer" id="active-addr-copy">${dot}${escapeHtml(addr)}</span>` +
+            `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
+        $("active-addr-copy").addEventListener("click", (e) => {
+            navigator.clipboard.writeText(addr);
+            showFlash("Copied!");
+            flashCopyFeedback(e.currentTarget);
+        });
     } else {
         el.textContent = "";
     }
@@ -382,7 +400,6 @@ function init(ctx) {
         renderSendTokenSelect(addr);
         updateSendBalance();
         resetSendValidation();
-        pushCurrentView();
         showView("send");
     });
 

src/popup/views/receive.js

@@ -5,12 +5,17 @@ const {
     flashCopyFeedback,
     formatAddressHtml,
     addressTitle,
-    attachCopyHandlers,
-    goBack,
 } = require("./helpers");
 const { state, currentAddress, currentNetwork } = require("../../shared/state");
 const QRCode = require("qrcode");
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 function show() {
     const addr = currentAddress();
     const address = addr ? addr.address : "";
@@ -20,8 +25,11 @@ function show() {
         ? formatAddressHtml(address, ensName, null, title)
         : "";
     $("receive-address-block").dataset.full = address;
-    // Etherscan link is now included in formatAddressHtml via renderAddressHtml
+    const net = currentNetwork();
-    $("receive-etherscan-link").innerHTML = "";
+    const link = address ? `${net.explorerUrl}/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,
@@ -54,10 +62,18 @@ function show() {
         warningEl.style.visibility = "hidden";
     }
     showView("receive");
-    attachCopyHandlers("view-receive");
 }
 
 function init(ctx) {
+    $("receive-address-block").addEventListener("click", (e) => {
+        const addr = $("receive-address-block").dataset.full;
+        if (addr) {
+            navigator.clipboard.writeText(addr);
+            showFlash("Copied!");
+            flashCopyFeedback(e.currentTarget);
+        }
+    });
+
     $("btn-receive-copy").addEventListener("click", () => {
         const addr = $("receive-address-block").dataset.full;
         if (addr) {
@@ -68,7 +84,11 @@ function init(ctx) {
     });
 
     $("btn-receive-back").addEventListener("click", () => {
-        goBack();
+        if (state.selectedToken) {
+            ctx.showAddressToken();
+        } else {
+            ctx.showAddressDetail();
+        }
     });
 }
 

src/popup/views/send.js

@@ -3,13 +3,11 @@
 const {
     $,
     showFlash,
+    addressDotHtml,
     addressTitle,
     escapeHtml,
-    renderAddressHtml,
-    attachCopyHandlers,
-    goBack,
 } = require("./helpers");
-const { state, currentAddress } = require("../../shared/state");
+const { state, currentAddress, currentNetwork } = require("../../shared/state");
 let ctx;
 const { getProvider } = require("../../shared/balances");
 const { KNOWN_SYMBOLS, resolveSymbol } = require("../../shared/tokenList");
@@ -115,6 +113,13 @@ function updateToValidation() {
     }
 }
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 function isSpoofedToken(t) {
     const upper = (t.symbol || "").toUpperCase();
     if (!KNOWN_SYMBOLS.has(upper)) return false;
@@ -143,12 +148,24 @@ function renderSendTokenSelect(addr) {
 function updateSendBalance() {
     const addr = currentAddress();
     if (!addr) return;
+    const dot = addressDotHtml(addr.address);
+    const link = `${currentNetwork().explorerUrl}/address/${addr.address}`;
+    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
     const title = addressTitle(addr.address, state.wallets);
-    $("send-from").innerHTML = renderAddressHtml(addr.address, {
+    let fromHtml = "";
-        title,
+    if (title) {
-        ensName: addr.ensName,
+        fromHtml += `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>`;
-    });
+        if (addr.ensName) {
-    attachCopyHandlers($("send-from"));
+            fromHtml += `<div>${escapeHtml(addr.ensName)}</div>`;
+        }
+        fromHtml += `<div class="break-all">${escapeHtml(addr.address)}${extLink}</div>`;
+    } else if (addr.ensName) {
+        fromHtml += `<div class="flex items-center font-bold">${dot}${escapeHtml(addr.ensName)}</div>`;
+        fromHtml += `<div class="break-all">${escapeHtml(addr.address)}${extLink}</div>`;
+    } else {
+        fromHtml += `<div class="flex items-center">${dot}<span class="break-all">${escapeHtml(addr.address)}</span>${extLink}</div>`;
+    }
+    $("send-from").innerHTML = fromHtml;
     const token = state.selectedToken || $("send-token").value;
     if (token === "ETH") {
         $("send-balance").textContent =
@@ -251,7 +268,11 @@ function init(_ctx) {
     $("btn-send-back").addEventListener("click", () => {
         $("send-token").classList.remove("hidden");
         $("send-token-static").classList.add("hidden");
-        goBack();
+        if (state.selectedToken) {
+            ctx.showAddressToken();
+        } else {
+            ctx.showAddressDetail();
+        }
     });
 }
 

src/popup/views/settings.js

@@ -1,15 +1,8 @@
-const {
+const { $, showView, showFlash, escapeHtml } = require("./helpers");
-    $,
-    showView,
-    showFlash,
-    escapeHtml,
-    goBack,
-    pushCurrentView,
-} = require("./helpers");
 const { applyTheme } = require("../theme");
 const { state, saveState, currentNetwork } = require("../../shared/state");
 const { NETWORKS, SUPPORTED_CHAIN_IDS } = require("../../shared/networks");
-const { onChainSwitch } = require("../../shared/chainSwitch");
+const { clearPrices } = require("../../shared/prices");
 const { log, debugFetch } = require("../../shared/log");
 const deleteWallet = require("./deleteWallet");
 
@@ -93,7 +86,6 @@ function renderWalletListSettings() {
     container.querySelectorAll(".btn-delete-wallet").forEach((btn) => {
         btn.addEventListener("click", () => {
             const idx = parseInt(btn.dataset.idx, 10);
-            pushCurrentView();
             deleteWallet.show(idx);
         });
     });
@@ -229,9 +221,15 @@ function init(ctx) {
     if (networkSelect) {
         networkSelect.addEventListener("change", async () => {
             const newId = networkSelect.value;
-            const net = await onChainSwitch(newId);
+            const net = NETWORKS[newId];
+            if (!net) return;
+            state.networkId = newId;
+            state.rpcUrl = net.defaultRpcUrl;
+            state.blockscoutUrl = net.defaultBlockscoutUrl;
             $("settings-rpc").value = state.rpcUrl;
             $("settings-blockscout").value = state.blockscoutUrl;
+            if (net.isTestnet) clearPrices();
+            await saveState();
             showFlash("Switched to " + net.name + ".");
         });
     }
@@ -290,7 +288,8 @@ function init(ctx) {
     );
 
     $("btn-settings-back").addEventListener("click", () => {
-        goBack();
+        ctx.renderWalletList();
+        showView("main");
     });
 }
 

src/popup/views/settingsAddToken.js

@@ -1,4 +1,4 @@
-const { $, showView, showFlash, goBack } = require("./helpers");
+const { $, showView, showFlash } = require("./helpers");
 const { getTopTokens } = require("../../shared/tokenList");
 const { state, saveState } = require("../../shared/state");
 const { lookupTokenInfo } = require("../../shared/balances");
@@ -84,7 +84,7 @@ function init(_ctx) {
     ctx = _ctx;
 
     $("btn-settings-addtoken-back").addEventListener("click", () => {
-        goBack();
+        ctx.showSettingsView();
     });
 
     $("btn-settings-addtoken-select").addEventListener("click", async () => {

src/popup/views/transactionDetail.js

@@ -6,15 +6,11 @@ const {
     showView,
     showFlash,
     flashCopyFeedback,
+    addressDotHtml,
     addressTitle,
     escapeHtml,
     isoDate,
     timeAgo,
-    renderAddressHtml,
-    attachCopyHandlers,
-    copyableHtml,
-    etherscanLinkHtml,
-    goBack,
 } = require("./helpers");
 const { state, currentNetwork } = require("../../shared/state");
 const { formatEther, formatUnits } = require("ethers");
@@ -22,6 +18,13 @@ const makeBlockie = require("ethereum-blockies-base64");
 const { log, debugFetch } = require("../../shared/log");
 const { decodeCalldata } = require("./approval");
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 let ctx;
 
 /**
@@ -43,17 +46,52 @@ function getTransactionType(tx) {
     return "Native ETH Transfer";
 }
 
+function copyableHtml(text, extraClass) {
+    const cls =
+        "underline decoration-dashed cursor-pointer" +
+        (extraClass ? " " + extraClass : "");
+    return `<span class="${cls}" data-copy="${escapeHtml(text)}">${escapeHtml(text)}</span>`;
+}
+
 function blockieHtml(address) {
     const src = makeBlockie(address);
     return `<img src="${src}" width="48" height="48" style="image-rendering:pixelated;border-radius:50%;display:inline-block">`;
 }
 
+function etherscanLinkHtml(url) {
+    return (
+        `<a href="${url}" target="_blank" rel="noopener" ` +
+        `class="inline-flex items-center"` +
+        `>${EXT_ICON}</a>`
+    );
+}
+
 function txAddressHtml(address, ensName, title) {
     const blockie = blockieHtml(address);
-    return (
+    const dot = addressDotHtml(address);
-        `<div class="mb-1">${blockie}</div>` +
+    const link = `${currentNetwork().explorerUrl}/address/${address}`;
-        renderAddressHtml(address, { title, ensName })
+    const extLink = etherscanLinkHtml(link);
-    );
+    let html = `<div class="mb-1">${blockie}</div>`;
+    if (title) {
+        html += `<div class="font-bold">${escapeHtml(title)}</div>`;
+    }
+    if (ensName) {
+        html +=
+            `<div class="flex items-center">${dot}` +
+            copyableHtml(ensName, "") +
+            `</div>` +
+            `<div class="flex items-center">${dot}` +
+            copyableHtml(address, "break-all") +
+            extLink +
+            `</div>`;
+    } else {
+        html +=
+            `<div class="flex items-center">${dot}` +
+            copyableHtml(address, "break-all") +
+            extLink +
+            `</div>`;
+    }
+    return html;
 }
 
 function txHashHtml(hash) {
@@ -172,7 +210,17 @@ function render() {
         copyableHtml(isoStr) + " (" + escapeHtml(timeAgo(tx.timestamp)) + ")";
     $("tx-detail-status").textContent = tx.isError ? "Failed" : "Success";
     showView("transaction");
-    attachCopyHandlers("view-transaction");
+
+    document
+        .getElementById("view-transaction")
+        .querySelectorAll("[data-copy]")
+        .forEach((el) => {
+            el.onclick = () => {
+                navigator.clipboard.writeText(el.dataset.copy);
+                showFlash("Copied!");
+                flashCopyFeedback(el);
+            };
+        });
 }
 
 function showDetailField(sectionId, contentId, value) {
@@ -307,14 +355,19 @@ async function loadFullTxDetails(txHash, toAddress, isContractCall) {
                 detailsHtml += `<div class="mb-2">`;
                 detailsHtml += `<div class="text-muted">${escapeHtml(d.label)}</div>`;
                 if (d.address && d.isToken) {
-                    // Token entry: show symbol on its own line, then address via shared renderer
+                    // Token entry: show symbol on its own line, then dot + address + Etherscan link
+                    const dot = addressDotHtml(d.address);
                     const tokenSymbol = d.value.match(/^(\S+)\s*\(/)?.[1];
                     if (tokenSymbol) {
                         detailsHtml += `<div class="font-bold">${escapeHtml(tokenSymbol)}</div>`;
                     }
-                    detailsHtml += renderAddressHtml(d.address);
+                    const etherscanUrl = `${currentNetwork().explorerUrl}/token/${d.address}`;
+                    detailsHtml += `<div class="flex items-center">${dot}${copyableHtml(d.address, "break-all")}${etherscanLinkHtml(etherscanUrl)}</div>`;
                 } else if (d.address) {
-                    detailsHtml += renderAddressHtml(d.address);
+                    // Protocol/contract entry: show name + Etherscan link
+                    const dot = addressDotHtml(d.address);
+                    const etherscanUrl = `${currentNetwork().explorerUrl}/address/${d.address}`;
+                    detailsHtml += `<div class="flex items-center">${dot}${copyableHtml(d.value, "break-all")}${etherscanLinkHtml(etherscanUrl)}</div>`;
                 } else {
                     detailsHtml += `<div class="font-bold">${escapeHtml(d.value)}</div>`;
                 }
@@ -341,7 +394,13 @@ async function loadFullTxDetails(txHash, toAddress, isContractCall) {
         // Bind copy handlers for new elements (including raw data now outside section)
         const copyTargets = [section, rawSection].filter(Boolean);
         for (const container of copyTargets) {
-            attachCopyHandlers(container);
+            container.querySelectorAll("[data-copy]").forEach((el) => {
+                el.onclick = () => {
+                    navigator.clipboard.writeText(el.dataset.copy);
+                    showFlash("Copied!");
+                    flashCopyFeedback(el);
+                };
+            });
         }
     } catch (e) {
         log.errorf("loadCalldata failed:", e.message);
@@ -351,7 +410,11 @@ async function loadFullTxDetails(txHash, toAddress, isContractCall) {
 function init(_ctx) {
     ctx = _ctx;
     $("btn-tx-back").addEventListener("click", () => {
-        goBack();
+        if (state.selectedToken) {
+            ctx.showAddressToken();
+        } else {
+            ctx.showAddressDetail();
+        }
     });
 }
 

src/popup/views/txStatus.js

@@ -3,19 +3,24 @@
 const {
     $,
     showView,
+    showFlash,
+    flashCopyFeedback,
+    addressDotHtml,
     addressTitle,
     escapeHtml,
-    renderAddressHtml,
-    attachCopyHandlers,
-    copyableHtml,
-    etherscanLinkHtml,
-    clearViewStack,
 } = require("./helpers");
 const { TOKEN_BY_ADDRESS } = require("../../shared/tokenList");
 const { state, saveState, currentNetwork } = require("../../shared/state");
 const { getProvider } = require("../../shared/balances");
 const { log } = require("../../shared/log");
 
+const EXT_ICON =
+    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
+    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
+    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
+    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
+    `</svg></span>`;
+
 let ctx;
 let elapsedTimer = null;
 let pollTimer = null;
@@ -32,19 +37,50 @@ function clearTimers() {
 }
 
 function toAddressHtml(address) {
+    const dot = addressDotHtml(address);
+    const link = `${currentNetwork().explorerUrl}/address/${address}`;
+    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
     const title = addressTitle(address, state.wallets);
-    return renderAddressHtml(address, { title });
+    if (title) {
+        return (
+            `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>` +
+            `<div class="break-all underline decoration-dashed cursor-pointer" data-copy="${escapeHtml(address)}">${escapeHtml(address)}</div>` +
+            extLink
+        );
+    }
+    return `<div class="flex items-center">${dot}<span class="break-all underline decoration-dashed cursor-pointer" data-copy="${escapeHtml(address)}">${escapeHtml(address)}</span>${extLink}</div>`;
 }
 
 function txHashHtml(hash) {
     const link = `${currentNetwork().explorerUrl}/tx/${hash}`;
-    return copyableHtml(hash, "break-all") + etherscanLinkHtml(link);
+    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
+    return (
+        `<span class="underline decoration-dashed cursor-pointer break-all" data-copy="${escapeHtml(hash)}">${escapeHtml(hash)}</span>` +
+        extLink
+    );
 }
 
 function blockNumberHtml(blockNumber) {
     const num = String(blockNumber);
     const link = `${currentNetwork().explorerUrl}/block/${num}`;
-    return copyableHtml(num) + etherscanLinkHtml(link);
+    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
+    return (
+        `<span class="underline decoration-dashed cursor-pointer" data-copy="${escapeHtml(num)}">${escapeHtml(num)}</span>` +
+        extLink
+    );
+}
+
+function attachCopyHandlers(viewId) {
+    document
+        .getElementById(viewId)
+        .querySelectorAll("[data-copy]")
+        .forEach((el) => {
+            el.onclick = () => {
+                navigator.clipboard.writeText(el.dataset.copy);
+                showFlash("Copied!");
+                flashCopyFeedback(el);
+            };
+        });
 }
 
 function showWait(txInfo, txHash) {
@@ -222,16 +258,10 @@ function navigateBack() {
         window.close();
         return;
     }
-    // After a completed transaction, reset the navigation stack
-    // and go directly to the address view (token or detail).
-    // Use require() lazily to call show() without the ctx push wrapper.
-    clearViewStack();
-    state.viewStack.push("main");
     if (state.selectedToken) {
-        state.viewStack.push("address");
+        ctx.showAddressToken();
-        require("./addressToken").show();
     } else {
-        require("./addressDetail").show();
+        ctx.showAddressDetail();
     }
 }
 

src/shared/chainSwitch.js

@@ -1,57 +0,0 @@
-// Consolidated chain-switch handler.
-//
-// Every state change required when the active network changes is
-// performed here so that callers (settings UI, background
-// wallet_switchEthereumChain, future chain additions) all go
-// through a single code path.
-//
-// Adding a new chain (e.g. ETC) requires only a new entry in
-// networks.js — no per-caller wiring is needed.
-
-const { networkById } = require("./networks");
-const { clearPrices } = require("./prices");
-
-// Switch the active chain and reset all chain-specific cached state.
-// Returns the network configuration object for the new chain.
-async function onChainSwitch(newNetworkId) {
-    const { state, saveState } = require("./state");
-
-    const net = networkById(newNetworkId);
-
-    // --- core identity ---
-    state.networkId = net.id;
-    state.rpcUrl = net.defaultRpcUrl;
-    state.blockscoutUrl = net.defaultBlockscoutUrl;
-
-    // --- price cache ---
-    // Prices are chain-specific (testnet tokens are worthless,
-    // ETC has different pricing, etc.).
-    clearPrices();
-
-    // --- balance / refresh state ---
-    // Reset last-refresh timestamp so the next polling cycle
-    // triggers an immediate balance refresh on the new chain.
-    state.lastBalanceRefresh = 0;
-
-    // Clear per-address balances and token balances so stale data
-    // from the previous chain is never displayed while the first
-    // refresh on the new chain is in flight.
-    for (const wallet of state.wallets) {
-        for (const addr of wallet.addresses) {
-            addr.balance = "0";
-            addr.tokenBalances = [];
-        }
-    }
-
-    // --- chain-specific caches ---
-    // Token holder counts and fraud contract lists are
-    // chain-specific and must not carry over.
-    state.tokenHolderCache = {};
-    state.fraudContracts = [];
-
-    await saveState();
-
-    return net;
-}
-
-module.exports = { onChainSwitch };

src/shared/prices.js

@@ -26,8 +26,6 @@ async function refreshPrices() {
     }
 }
 
-// Clear all cached prices and reset the fetch timestamp so the
-// next refreshPrices() call will fetch fresh data.
 function clearPrices() {
     for (const key of Object.keys(prices)) {
         delete prices[key];
@@ -35,7 +33,6 @@ function clearPrices() {
     lastFetchedAt = 0;
 }
 
-// Return the USD price for a symbol, or null on testnet / unknown.
 function getPrice(symbol) {
     const { currentNetwork } = require("./state");
     if (currentNetwork().isTestnet) return null;

src/shared/state.js

@@ -38,7 +38,6 @@ const state = {
     selectedAddress: null,
     selectedToken: null,
     viewData: {},
-    viewStack: [],
 };
 
 // Return the network configuration for the currently selected network.
@@ -73,7 +72,6 @@ async function saveState() {
         selectedAddress: state.selectedAddress,
         selectedToken: state.selectedToken,
         viewData: state.viewData,
-        viewStack: state.viewStack,
     };
     await storageApi.set({ autistmask: persisted });
 }
@@ -135,7 +133,6 @@ async function loadState() {
             saved.selectedAddress !== undefined ? saved.selectedAddress : null;
         state.selectedToken = saved.selectedToken || null;
         state.viewData = saved.viewData || {};
-        state.viewStack = Array.isArray(saved.viewStack) ? saved.viewStack : [];
     }
 }