diff --git a/public/bundle.js b/public/bundle.js
index f7bb43d..60c6a56 100644
--- a/public/bundle.js
+++ b/public/bundle.js
@@ -1,5 +1,5 @@
 ////
-// version: 3e67d66
+// version: ea5b33c
 
 // src/js/dom.ts
 var content2 = $("content");
@@ -24,32 +24,26 @@ var $$ = (tag, innerHTML = "") => {
   return el;
 };
 
-// src/js/focus.ts
-function initFocus() {
-  window.addEventListener("click", focusHandler);
-  focusInput();
-}
-function focusInput() {
-  cmdInput.focus();
-}
-function focusHandler(e) {
-  const target = e.target;
-  if (!(target instanceof HTMLElement)) {
-    focusInput();
-    return;
-  }
-  if (["INPUT", "TEXTAREA", "CANVAS", "A"].includes(target.tagName))
-    return false;
-  const selection = window.getSelection() || "";
-  if (selection.toString() === "")
-    focusInput();
-  e.preventDefault();
-}
-
 // src/shared/utils.ts
 function randomId() {
   return Math.random().toString(36).slice(7);
 }
+async function importUrl(url) {
+  url += url.includes("?") ? "&" : "?";
+  url += "t=" + (nodeEnv() === "production" ? gitSHA() : Date.now());
+  console.log("-> import", url);
+  return import(url);
+}
+function nodeEnv() {
+  if (typeof process !== "undefined" && process.env?.NODE_ENV)
+    return "development";
+  if (typeof globalThis !== "undefined" && globalThis.NODE_ENV)
+    return globalThis.NODE_ENV;
+  return;
+}
+function gitSHA() {
+  return globalThis.GIT_SHA;
+}
 
 // src/js/scrollback.ts
 var statusColors = {
@@ -166,179 +160,6 @@ function handleOutput(msg) {
   addOutput(id, result.output);
 }
 
-// src/js/browser.ts
-var HEIGHT = 540;
-var WIDTH = 960;
-var controls = $("browser-controls");
-var address = $("browser-address");
-var iframe;
-var realUrl = "";
-var showInput = true;
-function isBrowsing() {
-  return document.querySelector("iframe.browser.active") !== null;
-}
-function openBrowser(url, openedVia = "click") {
-  showInput = openedVia === "click";
-  iframe = $$("iframe.browser.active");
-  iframe.src = url;
-  iframe.sandbox.add("allow-scripts", "allow-same-origin", "allow-forms");
-  iframe.height = String(HEIGHT);
-  iframe.width = String(WIDTH);
-  iframe.tabIndex = 0;
-  window.addEventListener("message", handleAppMessage);
-  window.addEventListener("keydown", handleBrowserKeydown);
-  controls.addEventListener("click", handleClick);
-  iframe.addEventListener("load", handlePageLoad);
-  controls.style.display = "";
-  const main = document.querySelector("#content");
-  main?.prepend(iframe);
-  setAddress(url);
-}
-function closeBrowser() {
-  window.removeEventListener("keydown", handleBrowserKeydown);
-  window.removeEventListener("message", handleAppMessage);
-  controls.removeEventListener("click", handleClick);
-  iframe.removeEventListener("load", handlePageLoad);
-  const id = randomId();
-  if (showInput)
-    addInput(id, "browse " + realUrl, "ok");
-  iframe.style.transformOrigin = "top left";
-  iframe.style.transform = "scale(0.5)";
-  iframe.style.pointerEvents = "none";
-  iframe.tabIndex = -1;
-  iframe.classList.remove("fullscreen", "active");
-  scrollback.append(iframe);
-  controls.style.display = "none";
-  focusInput();
-}
-function handleAppMessage(event) {
-  const origin = event.origin;
-  if (!origin.includes("localhost") && !origin.match(/\.local$/)) {
-    return;
-  }
-  const { type, data } = event.data;
-  switch (type) {
-    case "NAV_READY":
-      break;
-    case "URL_CHANGED":
-      setAddress(data.url);
-      break;
-    case "TITLE_CHANGED":
-      console.log("Page title:", data.title);
-      break;
-    case "NAV_BLOCKED":
-      showNavigationError(data.url, data.reason);
-      break;
-    case "KEYDOWN":
-      const keyEvent = new KeyboardEvent("keydown", {
-        key: data.key,
-        ctrlKey: data.ctrlKey,
-        shiftKey: data.shiftKey,
-        altKey: data.altKey,
-        metaKey: data.metaKey,
-        bubbles: true
-      });
-      window.dispatchEvent(keyEvent);
-      break;
-  }
-}
-function handleBrowserKeydown(e) {
-  if (e.key === "Escape" || e.ctrlKey && e.key === "c") {
-    e.preventDefault();
-    closeBrowser();
-  }
-}
-function handleClick(e) {
-  const target = e.target;
-  if (!(target instanceof HTMLElement))
-    return;
-  switch (target.id) {
-    case "back-button":
-      navigateBack();
-      break;
-    case "forward-button":
-      navigateForward();
-      break;
-    case "stop-button":
-      stopLoading();
-      break;
-    case "reload-button":
-      reloadBrowser();
-      break;
-    case "fullscreen-button":
-      fullscreenBrowser();
-      break;
-    case "close-button":
-      e.stopImmediatePropagation();
-      closeBrowser();
-      break;
-    default:
-      return;
-  }
-  e.preventDefault();
-}
-function handlePageLoad() {}
-function setAddress(url) {
-  realUrl = url;
-  address.textContent = url.replace(/https?:\/\//, "");
-}
-function navigateBack() {
-  sendNavCommand("back");
-}
-function navigateForward() {
-  sendNavCommand("forward");
-}
-function reloadBrowser() {
-  sendNavCommand("reload");
-}
-function stopLoading() {
-  sendNavCommand("stop");
-}
-function fullscreenBrowser() {
-  controls.style.display = "none";
-  iframe.classList.add("fullscreen");
-  document.body.append(iframe);
-}
-function sendNavCommand(action) {
-  if (!iframe.contentWindow)
-    return;
-  iframe.contentWindow.postMessage({
-    type: "NAV_COMMAND",
-    action
-  }, "*");
-}
-function showNavigationError(url, reason) {
-  alert(`NAVIGATION BLOCKED
-
-${url}
-
-${reason}`);
-}
-
-// src/js/resize.ts
-var content3 = document.getElementById("content");
-function initResize() {
-  window.addEventListener("resize", resize);
-  resize();
-}
-function resize() {
-  if (document.body.dataset.mode === "tall") {
-    resizeTall();
-  } else {
-    resizeCinema();
-  }
-}
-function resizeTall() {
-  const scale = Math.min(1, window.innerWidth / 960);
-  content3.style.transformOrigin = "top center";
-  content3.style.transform = `scaleX(${scale})`;
-}
-function resizeCinema() {
-  const scale = Math.min(window.innerWidth / 960, window.innerHeight / 540);
-  content3.style.transformOrigin = "center center";
-  content3.style.transform = `scale(${scale})`;
-}
-
 // src/js/webapp.ts
 var apps = [];
 function cacheApps(a) {
@@ -347,14 +168,6 @@ function cacheApps(a) {
   apps.sort();
   window.dispatchEvent(new CustomEvent("apps:change"));
 }
-function currentAppUrl() {
-  const project = sessionStore.get("project") || "root";
-  if (!apps.includes(project))
-    return;
-  const hostname = sessionStore.get("hostname") || "localhost";
-  const s = hostname.startsWith("localhost") ? "" : "s";
-  return `http${s}://${project}.${hostname}`;
-}
 
 // src/js/session.ts
 var sessionId = randomId();
@@ -370,7 +183,7 @@ function handleSessionStart(msg) {
   sessionStore.set("hostname", msg.data.hostname);
   updateProjectName(msg.data.project);
   updateCwd(msg.data.cwd);
-  browserCommands.mode?.(msg.data.mode);
+  mode(msg.data.mode);
 }
 function handleSessionUpdate(msg) {
   const data = msg.data;
@@ -597,10 +410,32 @@ class GameContext {
   }
 }
 
+// src/js/focus.ts
+function initFocus() {
+  window.addEventListener("click", focusHandler);
+  focusInput();
+}
+function focusInput() {
+  cmdInput.focus();
+}
+function focusHandler(e) {
+  const target = e.target;
+  if (!(target instanceof HTMLElement)) {
+    focusInput();
+    return;
+  }
+  if (["INPUT", "TEXTAREA", "CANVAS", "A"].includes(target.tagName))
+    return false;
+  const selection = window.getSelection() || "";
+  if (selection.toString() === "")
+    focusInput();
+  e.preventDefault();
+}
+
 // src/js/game.ts
 var FPS = 30;
-var HEIGHT2 = 540;
-var WIDTH2 = 960;
+var HEIGHT = 540;
+var WIDTH = 960;
 var oldMode = "cinema";
 var running = false;
 var canvas;
@@ -620,14 +455,14 @@ async function handleGameStart(msg) {
   const name = msg.data;
   let game;
   try {
-    game = await import(`/source/${name}?session=${sessionId}`);
+    game = await importUrl(`/source/${name}?session=${sessionId}}`);
   } catch (err) {
     setStatus(msgId, "error");
     addOutput(msgId, `Error: ${err.message ? err.message : err}`);
     return;
   }
   if (document.body.dataset.mode === "tall") {
-    browserCommands.mode?.();
+    mode();
     oldMode = "tall";
   }
   canvas = createCanvas();
@@ -642,8 +477,8 @@ async function handleGameStart(msg) {
 function createCanvas() {
   const canvas2 = $$("canvas.game.active");
   canvas2.id = randomId();
-  canvas2.height = HEIGHT2;
-  canvas2.width = WIDTH2;
+  canvas2.height = HEIGHT;
+  canvas2.width = WIDTH;
   canvas2.tabIndex = 0;
   const main = document.querySelector("main");
   main?.classList.add("game");
@@ -710,12 +545,12 @@ function endGame() {
   window.removeEventListener("keyup", handleKeyup);
   window.removeEventListener("resize", resizeCanvas);
   if (oldMode === "tall")
-    browserCommands.mode?.();
+    mode();
   const main = document.querySelector("main");
   main?.classList.remove("game");
   canvas.classList.remove("active");
-  canvas.style.height = HEIGHT2 / 2 + "px";
-  canvas.style.width = WIDTH2 / 2 + "px";
+  canvas.style.height = HEIGHT / 2 + "px";
+  canvas.style.width = WIDTH / 2 + "px";
   const output2 = $$("li.output");
   output2.append(canvas);
   insert(output2);
@@ -811,61 +646,88 @@ function retryConnection() {
   setTimeout(startConnection, 2000);
 }
 
-// src/js/statusbar.ts
-var STATUS_MSG_LENGTH = 3000;
-var statusbar = $("statusbar");
-var statusbarMsg = $("statusbar-msg");
-var timer;
-function status(msg) {
-  showStatusMsg();
-  statusbarMsg.textContent = msg;
-  if (timer)
-    clearTimeout(timer);
-  timer = setTimeout(hideStatusMsg, STATUS_MSG_LENGTH);
+// src/js/history.ts
+var history = ["one", "two", "three"];
+var idx = -1;
+var savedInput = "";
+function initHistory() {
+  cmdInput.addEventListener("keydown", navigateHistory);
 }
-function showStatusMsg() {
-  statusbar.classList.add("showing-msg");
+function addToHistory(input) {
+  if (history.length === 0 || history[0] === input)
+    return;
+  history.unshift(input);
+  resetHistory();
 }
-function hideStatusMsg() {
-  statusbar.className = "";
+function resetHistory() {
+  idx = -1;
+  savedInput = "";
+}
+function navigateHistory(e) {
+  if (cmdLine.dataset.extended)
+    return;
+  if (e.key === "ArrowUp" || e.ctrlKey && e.key === "p") {
+    e.preventDefault();
+    if (idx >= history.length - 1)
+      return;
+    if (idx === -1)
+      savedInput = cmdInput.value;
+    cmdInput.value = history[++idx] || "";
+    if (idx >= history.length)
+      idx = history.length - 1;
+  } else if (e.key === "ArrowDown" || e.ctrlKey && e.key === "n") {
+    e.preventDefault();
+    if (idx <= 0) {
+      cmdInput.value = savedInput;
+      idx = -1;
+      return;
+    }
+    cmdInput.value = history[--idx] || "";
+    if (idx < -1)
+      idx = -1;
+  } else if (idx !== -1) {
+    resetHistory();
+  }
+}
+
+// src/js/shell.ts
+async function runCommand(input, showInput = true) {
+  if (!input.trim())
+    return;
+  if (input.includes(";")) {
+    input.split(";").forEach(async (cmd2) => await runCommand(cmd2.trim()));
+    return;
+  }
+  const id = randomId();
+  addToHistory(input);
+  if (showInput)
+    addInput(id, input);
+  const [cmd = "", ...args] = input.split(" ");
+  if (commands[cmd]?.type === "browser") {
+    const mod = await importUrl(`/source/${cmd}`);
+    if (!mod.default) {
+      addOutput(id, `no default export in ${cmd}`);
+      setStatus(id, "error");
+      return;
+    }
+    const result = mod.default(...args);
+    if (result)
+      addOutput(id, result);
+    setStatus(id, "ok");
+  } else {
+    send({ id, type: "input", data: input });
+  }
 }
 
 // src/js/commands.ts
-var commands = [];
-var browserCommands = {
-  browse: (url) => {
-    const currentUrl = url ?? currentAppUrl();
-    if (currentUrl) {
-      openBrowser(currentUrl, "command");
-    } else {
-      setTimeout(() => setStatus(latestId(), "error"), 0);
-      return "usage: browse <url>";
-    }
-  },
-  "browser-session": () => sessionId,
-  clear: () => scrollback.innerHTML = "",
-  commands: () => {
-    return { html: "<div>" + commands.map((cmd) => `<a href="#help ${cmd}">${cmd}</a>`).join("") + "</div>" };
-  },
-  fullscreen: () => document.body.requestFullscreen(),
-  mode: (mode) => {
-    if (!mode) {
-      mode = document.body.dataset.mode === "tall" ? "cinema" : "tall";
-      send({ type: "session:update", data: { "ui:mode": mode } });
-    }
-    content2.style.display = "";
-    document.body.dataset.mode = mode;
-    resize();
-    focusInput();
-  },
-  status: (msg) => status(msg),
-  reload: () => window.location.reload()
-};
+var commands = {};
 function cacheCommands(cmds) {
-  commands.length = 0;
-  commands.push(...cmds);
-  commands.push(...Object.keys(browserCommands));
-  commands.sort();
+  for (const key in commands)
+    delete commands[key];
+  Object.assign(commands, cmds);
+}
+async function mode(mode2) {
+  await runCommand(mode2 ? `mode ${mode2}` : "mode", false);
 }
 
 // src/js/completion.ts
@@ -877,7 +739,7 @@ function handleCompletion(e) {
     return;
   e.preventDefault();
   const input = cmdInput.value;
-  for (const command of commands) {
+  for (const command of Object.keys(commands)) {
     if (command.startsWith(input)) {
       cmdInput.value = command;
       return;
@@ -1207,70 +1069,153 @@ function handleGamepad() {
   requestAnimationFrame(handleGamepad);
 }
 
-// src/js/history.ts
-var history = ["one", "two", "three"];
-var idx = -1;
-var savedInput = "";
-function initHistory() {
-  cmdInput.addEventListener("keydown", navigateHistory);
+// src/js/browser.ts
+var HEIGHT2 = 540;
+var WIDTH2 = 960;
+var controls = $("browser-controls");
+var address = $("browser-address");
+var iframe;
+var realUrl = "";
+var showInput = true;
+function isBrowsing() {
+  return document.querySelector("iframe.browser.active") !== null;
 }
-function addToHistory(input) {
-  if (history.length === 0 || history[0] === input)
-    return;
-  history.unshift(input);
-  resetHistory();
+function openBrowser(url, openedVia = "click") {
+  showInput = openedVia === "click";
+  iframe = $$("iframe.browser.active");
+  iframe.src = url;
+  iframe.sandbox.add("allow-scripts", "allow-same-origin", "allow-forms");
+  iframe.height = String(HEIGHT2);
+  iframe.width = String(WIDTH2);
+  iframe.tabIndex = 0;
+  window.addEventListener("message", handleAppMessage);
+  window.addEventListener("keydown", handleBrowserKeydown);
+  controls.addEventListener("click", handleClick);
+  iframe.addEventListener("load", handlePageLoad);
+  controls.style.display = "";
+  const main = document.querySelector("#content");
+  main?.prepend(iframe);
+  setAddress(url);
 }
-function resetHistory() {
-  idx = -1;
-  savedInput = "";
-}
-function navigateHistory(e) {
-  if (cmdLine.dataset.extended)
-    return;
-  if (e.key === "ArrowUp" || e.ctrlKey && e.key === "p") {
-    e.preventDefault();
-    if (idx >= history.length - 1)
-      return;
-    if (idx === -1)
-      savedInput = cmdInput.value;
-    cmdInput.value = history[++idx] || "";
-    if (idx >= history.length)
-      idx = history.length - 1;
-  } else if (e.key === "ArrowDown" || e.ctrlKey && e.key === "n") {
-    e.preventDefault();
-    if (idx <= 0) {
-      cmdInput.value = savedInput;
-      idx = -1;
-      return;
-    }
-    cmdInput.value = history[--idx] || "";
-    if (idx < -1)
-      idx = -1;
-  } else if (idx !== -1) {
-    resetHistory();
-  }
-}
-
-// src/js/shell.ts
-async function runCommand(input) {
-  if (!input.trim())
-    return;
-  if (input.includes(";")) {
-    input.split(";").forEach(async (cmd2) => await runCommand(cmd2.trim()));
-    return;
-  }
+function closeBrowser() {
+  window.removeEventListener("keydown", handleBrowserKeydown);
+  window.removeEventListener("message", handleAppMessage);
+  controls.removeEventListener("click", handleClick);
+  iframe.removeEventListener("load", handlePageLoad);
   const id = randomId();
-  addToHistory(input);
-  addInput(id, input);
-  const [cmd = "", ...args] = input.split(" ");
-  if (browserCommands[cmd]) {
-    const result = await browserCommands[cmd](...args);
-    if (result)
-      addOutput(id, result);
-    setStatus(id, "ok");
-  } else {
-    send({ id, type: "input", data: input });
+  if (showInput)
+    addInput(id, "browse " + realUrl, "ok");
+  iframe.style.transformOrigin = "top left";
+  iframe.style.transform = "scale(0.5)";
+  iframe.style.pointerEvents = "none";
+  iframe.tabIndex = -1;
+  iframe.classList.remove("fullscreen", "active");
+  scrollback.append(iframe);
+  controls.style.display = "none";
+  focusInput();
+}
+function handleAppMessage(event) {
+  const origin = event.origin;
+  if (!origin.includes("localhost") && !origin.match(/\.local$/)) {
+    return;
   }
+  const { type, data } = event.data;
+  switch (type) {
+    case "NAV_READY":
+      break;
+    case "URL_CHANGED":
+      setAddress(data.url);
+      break;
+    case "TITLE_CHANGED":
+      console.log("Page title:", data.title);
+      break;
+    case "NAV_BLOCKED":
+      showNavigationError(data.url, data.reason);
+      break;
+    case "KEYDOWN":
+      const keyEvent = new KeyboardEvent("keydown", {
+        key: data.key,
+        ctrlKey: data.ctrlKey,
+        shiftKey: data.shiftKey,
+        altKey: data.altKey,
+        metaKey: data.metaKey,
+        bubbles: true
+      });
+      window.dispatchEvent(keyEvent);
+      break;
+  }
+}
+function handleBrowserKeydown(e) {
+  if (e.key === "Escape" || e.ctrlKey && e.key === "c") {
+    e.preventDefault();
+    closeBrowser();
+  }
+}
+function handleClick(e) {
+  const target = e.target;
+  if (!(target instanceof HTMLElement))
+    return;
+  switch (target.id) {
+    case "back-button":
+      navigateBack();
+      break;
+    case "forward-button":
+      navigateForward();
+      break;
+    case "stop-button":
+      stopLoading();
+      break;
+    case "reload-button":
+      reloadBrowser();
+      break;
+    case "fullscreen-button":
+      fullscreenBrowser();
+      break;
+    case "close-button":
+      e.stopImmediatePropagation();
+      closeBrowser();
+      break;
+    default:
+      return;
+  }
+  e.preventDefault();
+}
+function handlePageLoad() {}
+function setAddress(url) {
+  realUrl = url;
+  address.textContent = url.replace(/https?:\/\//, "");
+}
+function navigateBack() {
+  sendNavCommand("back");
+}
+function navigateForward() {
+  sendNavCommand("forward");
+}
+function reloadBrowser() {
+  sendNavCommand("reload");
+}
+function stopLoading() {
+  sendNavCommand("stop");
+}
+function fullscreenBrowser() {
+  controls.style.display = "none";
+  iframe.classList.add("fullscreen");
+  document.body.append(iframe);
+}
+function sendNavCommand(action) {
+  if (!iframe.contentWindow)
+    return;
+  iframe.contentWindow.postMessage({
+    type: "NAV_COMMAND",
+    action
+  }, "*");
+}
+function showNavigationError(url, reason) {
+  alert(`NAVIGATION BLOCKED
+
+${url}
+
+${reason}`);
 }
 
 // src/js/hyperlink.ts
@@ -1348,10 +1293,34 @@ function clearInput() {
   delete cmdLine.dataset.extended;
 }
 
+// src/js/resize.ts
+var content3 = document.getElementById("content");
+function initResize() {
+  window.addEventListener("resize", resize);
+  resize();
+}
+function resize() {
+  if (document.body.dataset.mode === "tall") {
+    resizeTall();
+  } else {
+    resizeCinema();
+  }
+}
+function resizeTall() {
+  const scale = Math.min(1, window.innerWidth / 960);
+  content3.style.transformOrigin = "top center";
+  content3.style.transform = `scaleX(${scale})`;
+}
+function resizeCinema() {
+  const scale = Math.min(window.innerWidth / 960, window.innerHeight / 540);
+  content3.style.transformOrigin = "center center";
+  content3.style.transform = `scale(${scale})`;
+}
+
 // src/js/vram.ts
 var vramCounter = $("vram-size");
 var startVramCounter = () => {
-  const timer2 = setInterval(() => {
+  const timer = setInterval(() => {
     const count = parseInt(vramCounter.textContent) + 1;
     let val = count + "KB";
     if (count < 10)
@@ -1359,7 +1328,7 @@ var startVramCounter = () => {
     vramCounter.textContent = val;
     if (count >= 64) {
       vramCounter.textContent += " OK";
-      clearInterval(timer2);
+      clearInterval(timer);
     }
   }, 15);
 };
diff --git a/src/html/layout.tsx b/src/html/layout.tsx
index 5401fbb..f771fcf 100644
--- a/src/html/layout.tsx
+++ b/src/html/layout.tsx
@@ -12,6 +12,12 @@ export const Layout: FC = async ({ children, title }) => (
       <link href="/css/main.css" rel="stylesheet" />
       <link href="/css/game.css" rel="stylesheet" />
 
+      <script dangerouslySetInnerHTML={{
+        __html: `
+          window.NODE_ENV = ${process.env.NODE_ENV ? "'" + process.env.NODE_ENV + "'" : 'undefined'};
+          window.GIT_SHA = "${GIT_SHA}";
+      `}} />
+
       <script type="importmap" dangerouslySetInnerHTML={{ __html: `{ "imports": { "@/": "/" } }` }} />
       <script src={process.env.NODE_ENV === "production" ? `/bundle.js?${GIT_SHA}` : "/js/main.js"} type="module" async></script>
     </head>
diff --git a/src/shared/utils.ts b/src/shared/utils.ts
index 0721446..1320ead 100644
--- a/src/shared/utils.ts
+++ b/src/shared/utils.ts
@@ -40,9 +40,27 @@ export function unique<T>(array: T[]): T[] {
     return [...new Set(array)]
 }
 
+// import a typescript module. caches in production, doesn't in dev.
 export async function importUrl(url: string) {
     url += url.includes("?") ? "&" : "?"
-    url += "t=" + Date.now()
+    url += "t=" + (nodeEnv() === "production" ? gitSHA() : Date.now())
+
     console.log("-> import", url)
     return import(url)
+}
+
+// "production" or nuttin
+function nodeEnv(): string | undefined {
+    if (typeof process !== 'undefined' && process.env?.NODE_ENV)
+        return process.env.NODE_ENV
+
+    if (typeof globalThis !== 'undefined' && (globalThis as any).NODE_ENV)
+        return (globalThis as any).NODE_ENV
+
+    return undefined
+}
+
+// should always be set
+function gitSHA(): string {
+    return (globalThis as any).GIT_SHA
 }
\ No newline at end of file