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/bots-queue/describe-job-step.test.ts

@@ -5,11 +5,11 @@ import describeJobStep from "./describe-job-step";
 const candidate = { model: { slug: "deepseek/deepseek-chat:free" } } as HarnessCandidate;
 
 describe("describeJobStep", () => {
-    test("names each tool once, never its arguments", () => {
+    test("says what each tool does once, never its arguments", () => {
         expect(
             describeJobStep({
                 index: 2,
-                text: "Let me look.",
+                text: null,
                 candidate,
                 tool_calls: [
                     { id: "a", name: "sandbox_execute_bash", arguments: '{"command":"cat secret"}' },
@@ -19,7 +19,7 @@ describe("describeJobStep", () => {
             }),
         ).toEqual({
             kind: "tool",
-            text: "Using sandbox_execute_bash, update_memory",
+            text: "Running a command, Updating memory",
             metadata: {
                 step: 2,
                 model: "deepseek/deepseek-chat:free",
@@ -28,6 +28,32 @@ describe("describeJobStep", () => {
         });
     });
 
+    test("prefers what the model said it's doing", () => {
+        expect(
+            describeJobStep({
+                index: 0,
+                text: "Opening the Gmail tab.\nThen reading it.",
+                candidate,
+                tool_calls: [{ id: "a", name: "browser_navigate", arguments: "{}" }],
+            })?.text,
+        ).toBe("Opening the Gmail tab.");
+    });
+
+    test("labels tool families and falls back to the name", () => {
+        expect(
+            describeJobStep({
+                index: 0,
+                text: "",
+                candidate,
+                tool_calls: [
+                    { id: "a", name: "browser_navigate", arguments: "{}" },
+                    { id: "b", name: "browser_click", arguments: "{}" },
+                    { id: "c", name: "some_mcp_tool", arguments: "{}" },
+                ],
+            })?.text,
+        ).toBe("Using the browser, Using some_mcp_tool");
+    });
+
     test("keeps the first line of a text-only turn, cut to one line", () => {
         const step = describeJobStep({
             index: 0,