feat(chat): terminal chat parity for every tool; Desktop-like artifacts

- The chat over a terminal pane now covers Claude, Codex, omp, Cursor and
  Antigravity: Cursor's agent transcript and agy's step log
  (brain/<id>/.system_generated/logs/transcript_full.jsonl) are read as
  conversations; Cursor sessions are claimed by their workspace
- Replies appear as soon as they are written: the projects-tree watcher
  broadcasts `transcript_changed` (at most every 250 ms per session) and the
  chat re-reads the transcript while the terminal underneath draws
- Stop shows from the pane's own busy line (Claude/Codex `esc to interrupt`,
  agy `… esc to cancel`), or fresh output for omp/Cursor — no hooks needed
- Permission prompts read off the terminal become a card with the tool, its
  command and "Deny with a note"; Codex gets Permission mode / Model buttons
  that open its own numbered pickers, answered from the menu card
- Artifacts: cards for pages/documents/diagrams/tables/React components, a
  Preview | Code panel with versions, copy, download, save to the Artifacts
  Hub, full screen; sandboxed iframes without allow-same-origin
- Claude panes get CLAUDE_CODE_ENABLE_TODO_TOOLS=1 so the Progress panel has a
  plan; multi-question pane menus read their Next row and question tabs
- The realtime chat bridge (structured stdio, /api/chat-bridge, /ws-chat)
  from the unreleased ad9d475 is not kept

server/__tests__/cursor-usage.test.js

@@ -4,8 +4,10 @@
  * project slug walked back onto the filesystem) and no tokens, an unchanged
  * file never re-read, a quiet one settled to completed, a session the user
  * deleted staying deleted, and a non-cursor row with the same id never
- * touched. The Cursor dir and the DB are temp dirs; the transcripts are
- * synthetic, in the shape Cursor writes.
+ * touched, a session claimed by the Cursor pane it started in, and the
+ * transcript mapped to the Claude transcript shape by the
+ * transcript routes. The Cursor dir and the DB are temp dirs; the transcripts
+ * are synthetic, in the shape Cursor writes.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -16,13 +18,18 @@ const path = require("node:path");
 const ROOT = fs.mkdtempSync(path.join(os.tmpdir(), "agenthub-cursor-usage-"));
 process.env.DASHBOARD_DB_PATH = path.join(ROOT, "dashboard.db");
 process.env.AGENTHUB_CURSOR_DIR = path.join(ROOT, "cursor");
+process.env.CLAUDE_HOME = path.join(ROOT, "claude");
 
 const { describe, it, beforeEach, after } = require("node:test");
 const assert = require("node:assert/strict");
 const { db } = require("../db");
 const cursor = require("../lib/cursor-usage");
 
-after(() => fs.rmSync(ROOT, { recursive: true, force: true }));
+let server;
+after(() => {
+  server?.close();
+  fs.rmSync(ROOT, { recursive: true, force: true });
+});
 
 const ID = "7481e37e-9157-4145-b985-2ea9a2117f52";
 const PROJECT = path.join(fs.realpathSync(ROOT), "work", "my app");
@@ -65,7 +72,8 @@ const session = (id) => db.prepare("SELECT * FROM sessions WHERE id = ?").get(id
 beforeEach(() => {
   fs.rmSync(process.env.AGENTHUB_CURSOR_DIR, { recursive: true, force: true });
   db.exec(
-    "DELETE FROM token_usage; DELETE FROM agents; DELETE FROM sessions; DELETE FROM cursor_transcripts;"
+    "DELETE FROM token_usage; DELETE FROM agents; DELETE FROM sessions; DELETE FROM cursor_transcripts;" +
+      " DELETE FROM dashboard_runs; DELETE FROM lanes;"
   );
 });
 
@@ -175,4 +183,64 @@ describe("cursor usage", () => {
     assert.equal(session(ID).name, `Cursor ${ID.slice(0, 8)}`);
     assert.equal(session(ID).cwd, null);
   });
+
+  it("maps the transcript to the transcript shape", async () => {
+    const file = transcript(ID);
+    const more = [
+      {
+        role: "assistant",
+        message: {
+          content: [
+            { type: "text", text: "Reading it now." },
+            { type: "tool_use", id: "t1", name: "Grep", input: { pattern: "x" } },
+          ],
+        },
+      },
+      {
+        role: "user",
+        message: { content: [{ type: "tool_result", tool_use_id: "t1", content: "no match" }] },
+      },
+      { role: "assistant", message: { content: [{ type: "text", text: "Done." }] } },
+    ];
+    fs.appendFileSync(file, more.map((l) => JSON.stringify(l)).join("\n") + "\n");
+    await cursor.ingestCursorUsage();
+    assert.equal(cursor.transcriptPath(ID), file);
+
+    const { createApp, startServer } = require("../index");
+    server ||= await startServer(createApp(), 0);
+    const BASE = `http://127.0.0.1:${server.address().port}`;
+    const list = await (await fetch(`${BASE}/api/sessions/${ID}/transcripts`)).json();
+    assert.deepEqual(
+      list.transcripts.map((t) => [t.id, t.type]),
+      [["main", "main"]]
+    );
+    const body = await (await fetch(`${BASE}/api/sessions/${ID}/transcript`)).json();
+    assert.deepEqual(
+      body.messages.map((m) => [m.sender, m.content.map((c) => c.type)]),
+      [
+        ["user", ["text"]],
+        ["assistant", ["tool_use"]],
+        ["assistant", ["text", "tool_use"]],
+        ["tool", ["tool_result"]],
+        ["assistant", ["text"]],
+      ]
+    );
+    assert.equal(body.messages[0].content[0].text, "Review the campaign code\nplease");
+    assert.equal(body.messages[3].content[0].output, "no match");
+    const sub = await (await fetch(`${BASE}/api/sessions/${ID}/transcript?agent_id=x`)).json();
+    assert.equal(sub.messages.length, 0);
+  });
+
+  it("gives the session to the Cursor pane it started in", async () => {
+    db.prepare("INSERT INTO lanes (id, title, cwd) VALUES (5, 'w', ?)").run(PROJECT);
+    db.prepare(
+      `INSERT INTO dashboard_runs (id, lane_id, cwd, status, started_at, tool)
+       VALUES ('agenthub-lane-5', 5, ?, 'running', ?, 'cursor')`
+    ).run(PROJECT, new Date(Date.now() - 60_000).toISOString());
+    transcript(ID);
+    await cursor.ingestCursorUsage();
+    assert.equal(session(ID).lane_id, 5);
+    const run = db.prepare("SELECT session_id FROM dashboard_runs WHERE id = 'agenthub-lane-5'");
+    assert.equal(run.get().session_id, ID);
+  });
 });