feat: add cursor local adapter across server ui and cli

server/src/__tests__/adapter-session-codecs.test.ts

@@ -1,6 +1,10 @@
 import { describe, expect, it } from "vitest";
 import { sessionCodec as claudeSessionCodec } from "@paperclipai/adapter-claude-local/server";
 import { sessionCodec as codexSessionCodec, isCodexUnknownSessionError } from "@paperclipai/adapter-codex-local/server";
+import {
+  sessionCodec as cursorSessionCodec,
+  isCursorUnknownSessionError,
+} from "@paperclipai/adapter-cursor-local/server";
 import {
   sessionCodec as opencodeSessionCodec,
   isOpenCodeUnknownSessionError,
@@ -60,6 +64,24 @@ describe("adapter session codecs", () => {
     });
     expect(opencodeSessionCodec.getDisplayId?.(serialized ?? null)).toBe("opencode-session-1");
   });
+
+  it("normalizes cursor session params with cwd", () => {
+    const parsed = cursorSessionCodec.deserialize({
+      session_id: "cursor-session-1",
+      cwd: "/tmp/cursor",
+    });
+    expect(parsed).toEqual({
+      sessionId: "cursor-session-1",
+      cwd: "/tmp/cursor",
+    });
+
+    const serialized = cursorSessionCodec.serialize(parsed);
+    expect(serialized).toEqual({
+      sessionId: "cursor-session-1",
+      cwd: "/tmp/cursor",
+    });
+    expect(cursorSessionCodec.getDisplayId?.(serialized ?? null)).toBe("cursor-session-1");
+  });
 });
 
 describe("codex resume recovery detection", () => {
@@ -101,3 +123,26 @@ describe("opencode resume recovery detection", () => {
     ).toBe(false);
   });
 });
+
+describe("cursor resume recovery detection", () => {
+  it("detects unknown session errors from cursor output", () => {
+    expect(
+      isCursorUnknownSessionError(
+        "",
+        "Error: unknown session id abc",
+      ),
+    ).toBe(true);
+    expect(
+      isCursorUnknownSessionError(
+        "",
+        "chat abc not found",
+      ),
+    ).toBe(true);
+    expect(
+      isCursorUnknownSessionError(
+        "{\"type\":\"result\",\"subtype\":\"success\"}",
+        "",
+      ),
+    ).toBe(false);
+  });
+});

server/src/__tests__/cursor-local-adapter-environment.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+import fs from "node:fs/promises";
+import os from "node:os";
+import path from "node:path";
+import { testEnvironment } from "@paperclipai/adapter-cursor-local/server";
+
+describe("cursor environment diagnostics", () => {
+  it("creates a missing working directory when cwd is absolute", async () => {
+    const cwd = path.join(
+      os.tmpdir(),
+      `paperclip-cursor-local-cwd-${Date.now()}-${Math.random().toString(16).slice(2)}`,
+      "workspace",
+    );
+
+    await fs.rm(path.dirname(cwd), { recursive: true, force: true });
+
+    const result = await testEnvironment({
+      companyId: "company-1",
+      adapterType: "cursor",
+      config: {
+        command: process.execPath,
+        cwd,
+      },
+    });
+
+    expect(result.checks.some((check) => check.code === "cursor_cwd_valid")).toBe(true);
+    expect(result.checks.some((check) => check.level === "error")).toBe(false);
+    const stats = await fs.stat(cwd);
+    expect(stats.isDirectory()).toBe(true);
+    await fs.rm(path.dirname(cwd), { recursive: true, force: true });
+  });
+});

server/src/__tests__/cursor-local-adapter.test.ts

@@ -0,0 +1,184 @@
+import { describe, expect, it, vi } from "vitest";
+import { isCursorUnknownSessionError, parseCursorJsonl } from "@paperclipai/adapter-cursor-local/server";
+import { parseCursorStdoutLine } from "@paperclipai/adapter-cursor-local/ui";
+import { printCursorStreamEvent } from "@paperclipai/adapter-cursor-local/cli";
+
+describe("cursor parser", () => {
+  it("extracts session, summary, usage, cost, and terminal error message", () => {
+    const stdout = [
+      JSON.stringify({ type: "system", subtype: "init", session_id: "chat_123", model: "gpt-5" }),
+      JSON.stringify({
+        type: "assistant",
+        message: {
+          content: [{ type: "output_text", text: "hello" }],
+        },
+      }),
+      JSON.stringify({
+        type: "result",
+        subtype: "success",
+        session_id: "chat_123",
+        usage: {
+          input_tokens: 100,
+          cached_input_tokens: 25,
+          output_tokens: 40,
+        },
+        total_cost_usd: 0.001,
+        result: "Task complete",
+      }),
+      JSON.stringify({ type: "error", message: "model access denied" }),
+    ].join("\n");
+
+    const parsed = parseCursorJsonl(stdout);
+    expect(parsed.sessionId).toBe("chat_123");
+    expect(parsed.summary).toBe("hello");
+    expect(parsed.usage).toEqual({
+      inputTokens: 100,
+      cachedInputTokens: 25,
+      outputTokens: 40,
+    });
+    expect(parsed.costUsd).toBeCloseTo(0.001, 6);
+    expect(parsed.errorMessage).toBe("model access denied");
+  });
+});
+
+describe("cursor stale session detection", () => {
+  it("treats missing/unknown session messages as an unknown session error", () => {
+    expect(isCursorUnknownSessionError("", "unknown session id chat_123")).toBe(true);
+    expect(isCursorUnknownSessionError("", "chat abc not found")).toBe(true);
+  });
+});
+
+describe("cursor ui stdout parser", () => {
+  it("parses assistant, thinking, and tool lifecycle events", () => {
+    const ts = "2026-03-05T00:00:00.000Z";
+
+    expect(
+      parseCursorStdoutLine(
+        JSON.stringify({
+          type: "assistant",
+          message: {
+            content: [
+              { type: "output_text", text: "I will run a command." },
+              { type: "thinking", text: "Checking repository state" },
+              { type: "tool_call", name: "bash", input: { command: "ls -1" } },
+              { type: "tool_result", tool_use_id: "tool_1", output: "AGENTS.md\n", status: "ok" },
+            ],
+          },
+        }),
+        ts,
+      ),
+    ).toEqual([
+      { kind: "assistant", ts, text: "I will run a command." },
+      { kind: "thinking", ts, text: "Checking repository state" },
+      { kind: "tool_call", ts, name: "bash", input: { command: "ls -1" } },
+      { kind: "tool_result", ts, toolUseId: "tool_1", content: "AGENTS.md\n", isError: false },
+    ]);
+  });
+
+  it("parses result usage and errors", () => {
+    const ts = "2026-03-05T00:00:00.000Z";
+    expect(
+      parseCursorStdoutLine(
+        JSON.stringify({
+          type: "result",
+          subtype: "success",
+          result: "Done",
+          usage: {
+            input_tokens: 10,
+            output_tokens: 5,
+            cached_input_tokens: 2,
+          },
+          total_cost_usd: 0.00042,
+          is_error: false,
+        }),
+        ts,
+      ),
+    ).toEqual([
+      {
+        kind: "result",
+        ts,
+        text: "Done",
+        inputTokens: 10,
+        outputTokens: 5,
+        cachedTokens: 2,
+        costUsd: 0.00042,
+        subtype: "success",
+        isError: false,
+        errors: [],
+      },
+    ]);
+  });
+});
+
+function stripAnsi(value: string): string {
+  return value.replace(/\x1b\[[0-9;]*m/g, "");
+}
+
+describe("cursor cli formatter", () => {
+  it("prints init, assistant, tool, and result events", () => {
+    const spy = vi.spyOn(console, "log").mockImplementation(() => {});
+
+    try {
+      printCursorStreamEvent(
+        JSON.stringify({ type: "system", subtype: "init", session_id: "chat_abc", model: "gpt-5" }),
+        false,
+      );
+      printCursorStreamEvent(
+        JSON.stringify({
+          type: "assistant",
+          message: {
+            content: [{ type: "output_text", text: "hello" }],
+          },
+        }),
+        false,
+      );
+      printCursorStreamEvent(
+        JSON.stringify({
+          type: "assistant",
+          message: {
+            content: [{ type: "tool_call", name: "bash", input: { command: "ls -1" } }],
+          },
+        }),
+        false,
+      );
+      printCursorStreamEvent(
+        JSON.stringify({
+          type: "assistant",
+          message: {
+            content: [{ type: "tool_result", output: "AGENTS.md", status: "ok" }],
+          },
+        }),
+        false,
+      );
+      printCursorStreamEvent(
+        JSON.stringify({
+          type: "result",
+          subtype: "success",
+          result: "Done",
+          usage: { input_tokens: 10, output_tokens: 5, cached_input_tokens: 2 },
+          total_cost_usd: 0.00042,
+        }),
+        false,
+      );
+
+      const lines = spy.mock.calls
+        .map((call) => call.map((v) => String(v)).join(" "))
+        .map(stripAnsi);
+
+      expect(lines).toEqual(
+        expect.arrayContaining([
+          "Cursor init (session: chat_abc, model: gpt-5)",
+          "assistant: hello",
+          "tool_call: bash",
+          "tool_result",
+          "AGENTS.md",
+          "result: subtype=success",
+          "tokens: in=10 out=5 cached=2 cost=$0.000420",
+          "assistant: Done",
+        ]),
+      );
+    } finally {
+      spy.mockRestore();
+    }
+  });
+});