Open computers from the chat, let bots ask for a take-over, show task progress

- Serve each computer to its owner under /computers/<id>/ (HTTP and
  websockets proxied to the AIO sandbox) and show it in a shared
  ComputerView with browser, terminal and code modes, opened from the
  computers modal or a take-over button in the thread.
- ask_user_to_take_over lets a bot hand a computer to the user for a
  login or captcha; the message gets a take-over button and needs-you,
  and the viewer hands it back with a chat message.
- While a task runs the thread shows "<bot> is working..." with the
  task's latest step; steps read as plain words, not tool names.
- A coordinator with no workers no longer claims to delegate, and bots
  describe started tasks in the first person.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/dict/bot-queue-dict.ts

@@ -42,3 +42,29 @@ export const BotReplyJobTitle = "Thinking";
  * The bot's status line while its job waits for a rate-limited model.
  */
 export const BotWaitingStatusLine = "Waiting for a free model";
+
+/**
+ * How a job step that called a tool reads in the chat's working row, by
+ * tool name. Tools not listed read "Using <name>".
+ */
+export const JobStepToolLabels: Record<string, string> = {
+    sandbox_execute_bash: "Running a command",
+    sandbox_execute_code: "Running code",
+    sandbox_read_file: "Reading a file",
+    sandbox_write_file: "Writing a file",
+    sandbox_file_operations: "Working with files",
+    search_computers: "Searching the computers",
+    ask_user_to_take_over: "Asking you to take over",
+    start_task: "Starting a task",
+    delegate_task: "Handing work to the crew",
+    assign_computer: "Changing computer access",
+    update_memory: "Updating memory",
+    update_instructions: "Updating instructions",
+};
+
+/**
+ * Labels for whole families of tools, by name prefix.
+ */
+export const JobStepToolPrefixLabels: Record<string, string> = {
+    browser_: "Using the browser",
+};

src/dict/computer-dict.ts

@@ -87,3 +87,34 @@ export const ComputerMcpExcludedTools = [
     "browser_gui_screenshot",
     "browser_gui_execute_action",
 ] as const;
+
+/**
+ * How the user can open a computer, each one of the AIO sandbox's own
+ * apps at `path` (relative to the computer's address). More of them
+ * (VNC, opencode, codex) can join later.
+ */
+export const ComputerViewModes = [
+    {
+        title: "Browser",
+        value: "browser",
+        path: "browser-ui",
+    },
+    {
+        title: "Terminal",
+        value: "terminal",
+        path: "terminal",
+    },
+    {
+        title: "Code",
+        value: "code",
+        path: "code-server/",
+    },
+] as const;
+
+export type ComputerViewMode = (typeof ComputerViewModes)[number]["value"];
+
+/**
+ * Where the app serves a computer to its owner's browser:
+ * `/computers/<id>/<path>`, proxied to the sandbox (`handleComputerProxy`).
+ */
+export const ComputerProxyPrefix = "/computers";