feat(editor): F4.6d the web browser and web server on a computer's desktop

The oracle BrowserWindowRun uses Java's browser and web server windows as a
person does; the room keeps a browser window per computer and sends a
program window's view, the start names the person's language. The editor
shows the page in a sandboxed frame, links and forms go to the room, the web
server has its button, virtual hosts and lines. Better than Java: relative
images and links count from the page's folder, a mark stays in the page, the
error page from Java's template, the virtual hosts' file with complete rows.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/editor/src/desktop/desktop.css

@@ -379,3 +379,160 @@
   padding: 0 16px;
   flex: none;
 }
+
+/* The web browser (GUIApplicationWebBrowserWindow): the address line with
+ * its button above the page, five pixels around each as in Java; the page
+ * in a frame of its own on white. */
+.browser {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  background: #eeeeee;
+  font: 13px Dialog, sans-serif;
+}
+
+.browser-address {
+  display: flex;
+  gap: 5px;
+  flex: none;
+  padding: 5px;
+}
+
+.browser-address input {
+  flex: 1;
+  min-width: 0;
+  min-height: 36px;
+  padding: 0 6px;
+  border: 1px solid #a0a0a0;
+  background: #ffffff;
+  color: #000000;
+  font: 16px Dialog, sans-serif;
+}
+
+.browser-address button,
+.web-server-bar button {
+  min-width: 44px;
+  min-height: 36px;
+  padding: 0 14px;
+  border: 1px solid #a0a0a0;
+  border-radius: 6px;
+  background: #f8f8f8;
+  color: #000000;
+  font: 13px Dialog, sans-serif;
+  cursor: pointer;
+}
+
+.browser-page {
+  flex: 1;
+  min-height: 0;
+  margin: 0 5px 5px;
+  display: flex;
+  background: #ffffff;
+  border: 1px solid #a0a0a0;
+}
+
+.browser-page iframe {
+  flex: 1;
+  width: 100%;
+  border: none;
+  background: #ffffff;
+}
+
+.browser-start {
+  flex: 1;
+  display: flex;
+  justify-content: center;
+  align-items: flex-start;
+}
+
+.browser-start img {
+  max-width: 100%;
+}
+
+/* The web server (GUIApplicationWebServerWindow): the button and the check
+ * box above, the virtual hosts' table while it is ticked, the lines below. */
+.web-server {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 5px 10px 10px;
+  background: #eeeeee;
+  color: #000000;
+  font: 13px Dialog, sans-serif;
+}
+
+.web-server-bar {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px 24px;
+  flex: none;
+}
+
+.web-server-bar label {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  min-height: 44px;
+  cursor: pointer;
+}
+
+.web-server-bar input[type='checkbox'] {
+  width: 20px;
+  height: 20px;
+}
+
+.web-server-hosts {
+  display: flex;
+  flex-direction: column;
+  gap: 5px;
+  flex: none;
+}
+
+.web-server-hosts table {
+  width: 100%;
+  border-collapse: collapse;
+  table-layout: fixed;
+  background: #ffffff;
+}
+
+.web-server-hosts th {
+  padding: 4px;
+  border: 1px solid #a0a0a0;
+  background: #e4e4e4;
+  font-weight: normal;
+  text-align: left;
+}
+
+.web-server-hosts td {
+  padding: 0;
+  border: 1px solid #c0c0c0;
+}
+
+.web-server-hosts td input {
+  width: 100%;
+  min-height: 32px;
+  box-sizing: border-box;
+  padding: 0 5px;
+  border: none;
+  background: transparent;
+  color: #000000;
+  font: 16px Dialog, sans-serif;
+}
+
+.web-server-log {
+  flex: 1;
+  min-height: 120px;
+  margin: 0;
+  overflow: auto;
+  padding: 4px;
+  border: 1px solid #a0a0a0;
+  background: #ffffff;
+  font: 12px ui-monospace, Menlo, Consolas, monospace;
+  white-space: pre-wrap;
+  overflow-wrap: anywhere;
+  user-select: text;
+}