package.json

@@ -28,7 +28,6 @@
     "@uncaged/workflow-agent-hermes": "workspace:*",
     "bun-types": "^1.3.13",
     "typescript": "^5.8.3",
-    "vitest": "^4.1.7",
     "yaml": "^2.9.0"
   },
   "repository": {

packages/cli-workflow/package.json

@@ -23,15 +23,14 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test src/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test src/"
   },
   "publishConfig": {
     "access": "public"
   },
   "devDependencies": {
-    "@types/mustache": "^4.2.6",
+    "@types/mustache": "^4.2.6"
-    "vitest": "^4.1.6"
   },
   "repository": {
     "type": "git",

packages/cli-workflow/src/__tests__/adapter-json-roundtrip.test.ts

@@ -1,3 +1,4 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { execFileSync } from "node:child_process";
 import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
@@ -5,7 +6,6 @@ import { join } from "node:path";
 import { putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, StepNodePayload, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { registerUwfSchemas } from "../schemas.js";
 import { saveThreadsIndex } from "../store.js";
 

packages/cli-workflow/src/__tests__/cas-exit-code.test.ts

@@ -1,8 +1,8 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { execSync } from "node:child_process";
 import { mkdir, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdCasPutText } from "../commands/cas.js";
 
 let storageRoot: string;

packages/cli-workflow/src/__tests__/cas.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdCasHas, cmdCasPutText } from "../commands/cas.js";
 
 let storageRoot: string;

packages/cli-workflow/src/__tests__/config.test.ts

@@ -1,7 +1,7 @@
+import { describe, expect, test } from "bun:test";
 import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { describe, expect, test } from "vitest";
 import {
   cmdConfigGet,
   cmdConfigList,

packages/cli-workflow/src/__tests__/current-role.test.ts

@@ -1,9 +1,9 @@
+import { describe, expect, test } from "bun:test";
 import { mkdir, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { putSchema } from "@ocas/core";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { createMarker, deleteMarker } from "../background/index.js";
 import { cmdThreadList, cmdThreadShow, cmdThreadStart } from "../commands/thread.js";
 import {

packages/cli-workflow/src/__tests__/include-tag.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { parse } from "yaml";
 import { createIncludeTag } from "../include.js";
 

packages/cli-workflow/src/__tests__/log.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, readdir, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdLogClean, cmdLogList, cmdLogShow } from "../commands/log.js";
 
 let storageRoot: string;

packages/cli-workflow/src/__tests__/moderator-evaluate.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import type { Target, WorkflowPayload } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 
 import { evaluate } from "../moderator/evaluate.js";
 

packages/cli-workflow/src/__tests__/preload.ts

@@ -0,0 +1,7 @@
+const originalExit = process.exit;
+
+process.exit = ((code?: number) => {
+  throw new Error(`process.exit(${code ?? 1})`);
+}) as typeof process.exit;
+
+export { originalExit };

packages/cli-workflow/src/__tests__/prompt.test.ts

@@ -1,7 +1,7 @@
+import { describe, expect, test } from "bun:test";
 import { execFileSync } from "node:child_process";
 import { dirname, join } from "node:path";
 import { fileURLToPath } from "node:url";
-import { describe, expect, test } from "vitest";
 
 const __dirname = dirname(fileURLToPath(import.meta.url));
 

packages/cli-workflow/src/__tests__/resolve-head-hash.test.ts

@@ -1,8 +1,8 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { resolveHeadHash } from "../commands/shared.js";
 import { appendThreadHistory, saveThreadsIndex } from "../store.js";
 

packages/cli-workflow/src/__tests__/setup-agent-discovery.test.ts

@@ -1,8 +1,8 @@
+import { afterEach, beforeEach, describe, expect, mock, spyOn, test } from "bun:test";
 import { readFileSync } from "node:fs";
 import { mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test, vi } from "vitest";
 import { parse } from "yaml";
 import { _agentNameFromBinary, _printAgentMenu, cmdSetup } from "../commands/setup.js";
 
@@ -31,7 +31,7 @@ describe("_agentNameFromBinary", () => {
 describe("_printAgentMenu", () => {
   test("prints known agents with labels", () => {
     const logs: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((...args: unknown[]) => {
+    spyOn(console, "log").mockImplementation((...args: unknown[]) => {
       logs.push(args.join(" "));
     });
 
@@ -40,12 +40,12 @@ describe("_printAgentMenu", () => {
     expect(logs.some((l) => l.includes("Hermes"))).toBe(true);
     expect(logs.some((l) => l.includes("Claude Code"))).toBe(true);
 
-    vi.restoreAllMocks();
+    mock.restore();
   });
 
   test("prints unknown agents with binary name as label", () => {
     const logs: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((...args: unknown[]) => {
+    spyOn(console, "log").mockImplementation((...args: unknown[]) => {
       logs.push(args.join(" "));
     });
 
@@ -53,7 +53,7 @@ describe("_printAgentMenu", () => {
 
     expect(logs.some((l) => l.includes("uwf-custom-agent"))).toBe(true);
 
-    vi.restoreAllMocks();
+    mock.restore();
   });
 });
 
@@ -67,7 +67,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   afterEach(async () => {
-    vi.restoreAllMocks();
+    mock.restore();
     await rm(storageRoot, { recursive: true, force: true });
   });
 
@@ -80,9 +80,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   test("defaults to hermes agent when no agent specified", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     const result = await cmdSetup(baseArgs());
 
@@ -93,9 +91,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   test("writes specified agent as default", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     const result = await cmdSetup({ ...baseArgs(), agent: "claude-code" });
 
@@ -106,9 +102,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   test("preserves existing agents when adding new one", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     // First setup with hermes
     await cmdSetup(baseArgs());
@@ -122,9 +116,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   test("updates defaultAgent on re-run with different agent", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     await cmdSetup(baseArgs());
     const config1 = parse(readFileSync(join(storageRoot, "config.yaml"), "utf8"));
@@ -136,9 +128,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   test("normalizes agent name with uwf- prefix to bare name", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     const result = await cmdSetup({ ...baseArgs(), agent: "uwf-hermes" });
 
@@ -151,9 +141,7 @@ describe("cmdSetup agent configuration", () => {
   });
 
   test("normalizes uwf-claude-code to claude-code", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     const result = await cmdSetup({ ...baseArgs(), agent: "uwf-claude-code" });
 

packages/cli-workflow/src/__tests__/setup-complexity.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, describe, expect, mock, spyOn, test } from "bun:test";
 import { mkdirSync, writeFileSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, describe, expect, test, vi } from "vitest";
 import {
   _discoverAgents,
   _isBackspace,
@@ -178,7 +178,7 @@ describe("_isBackspace", () => {
 
 describe("_printProviderMenu", () => {
   afterEach(() => {
-    vi.restoreAllMocks();
+    mock.restore();
   });
 
   const providers = [
@@ -188,7 +188,7 @@ describe("_printProviderMenu", () => {
 
   test("prints correct number of lines (one per provider + custom)", () => {
     const lines: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       lines.push(msg);
     });
     _printProviderMenu(providers);
@@ -198,7 +198,7 @@ describe("_printProviderMenu", () => {
 
   test("custom option number = providers.length + 1", () => {
     const lines: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       lines.push(msg);
     });
     _printProviderMenu(providers);
@@ -208,7 +208,7 @@ describe("_printProviderMenu", () => {
 
   test("each provider line contains its label and baseUrl", () => {
     const lines: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       lines.push(msg);
     });
     _printProviderMenu(providers);
@@ -294,12 +294,12 @@ describe("_resolveModelChoice", () => {
 
 describe("_printModelMenu", () => {
   afterEach(() => {
-    vi.restoreAllMocks();
+    mock.restore();
   });
 
   test("prints all models — each model name appears in output", () => {
     const output: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       output.push(msg);
     });
     const models = ["model-a", "model-b", "model-c"];
@@ -312,7 +312,7 @@ describe("_printModelMenu", () => {
 
   test("single column when termCols is very small", () => {
     const output: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       output.push(msg);
     });
     _printModelMenu(["a", "b", "c"], 1);
@@ -322,7 +322,7 @@ describe("_printModelMenu", () => {
 
   test("wide terminal fits multiple columns", () => {
     const output: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       output.push(msg);
     });
     const models = Array.from({ length: 6 }, (_, i) => `m${i}`);
@@ -338,12 +338,12 @@ describe("_printModelMenu", () => {
 
 describe("_printValidationResult", () => {
   afterEach(() => {
-    vi.restoreAllMocks();
+    mock.restore();
   });
 
   test("ok=true prints success message containing '✓'", () => {
     const lines: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       lines.push(msg);
     });
     _printValidationResult({ ok: true, error: null });
@@ -352,7 +352,7 @@ describe("_printValidationResult", () => {
 
   test("ok=false prints warning message containing '⚠'", () => {
     const lines: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       lines.push(msg);
     });
     _printValidationResult({ ok: false, error: "HTTP 401" });
@@ -361,7 +361,7 @@ describe("_printValidationResult", () => {
 
   test("ok=false includes the error string in output", () => {
     const lines: string[] = [];
-    vi.spyOn(console, "log").mockImplementation((msg: string) => {
+    spyOn(console, "log").mockImplementation((msg: string) => {
       lines.push(msg);
     });
     _printValidationResult({ ok: false, error: "HTTP 401" });

packages/cli-workflow/src/__tests__/setup-validate.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, beforeEach, describe, expect, mock, spyOn, test } from "bun:test";
 import { mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test, vi } from "vitest";
 import { cmdSetup, validateModel } from "../commands/setup.js";
 
 describe("validateModel", () => {
@@ -10,18 +10,18 @@ describe("validateModel", () => {
   const MODEL = "test-model";
 
   afterEach(() => {
-    vi.restoreAllMocks();
+    mock.restore();
   });
 
   test("success path — returns ok on 200", async () => {
-    const mockFetch = vi
+    const mockFetch = spyOn(globalThis, "fetch").mockResolvedValue(
-      .spyOn(globalThis, "fetch")
+      new Response(JSON.stringify({}), { status: 200 }),
-      .mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
+    );
 
     const result = await validateModel(BASE_URL, API_KEY, MODEL);
 
     expect(result).toEqual({ ok: true, value: undefined });
-    expect(mockFetch).toHaveBeenCalledOnce();
+    expect(mockFetch).toHaveBeenCalledTimes(1);
 
     const [url, opts] = mockFetch.mock.calls[0]!;
     expect(url).toBe(`${BASE_URL}/chat/completions`);
@@ -37,7 +37,7 @@ describe("validateModel", () => {
   });
 
   test("HTTP 401 — returns error containing 401", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(
       new Response("Unauthorized", { status: 401, statusText: "Unauthorized" }),
     );
 
@@ -50,7 +50,7 @@ describe("validateModel", () => {
   });
 
   test("HTTP 404 — returns error containing 404", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(
       new Response("Not Found", { status: 404, statusText: "Not Found" }),
     );
 
@@ -64,7 +64,7 @@ describe("validateModel", () => {
 
   test("network timeout — returns error mentioning timeout", async () => {
     const err = new DOMException("signal timed out", "AbortError");
-    vi.spyOn(globalThis, "fetch").mockRejectedValue(err);
+    spyOn(globalThis, "fetch").mockRejectedValue(err);
 
     const result = await validateModel(BASE_URL, API_KEY, MODEL);
 
@@ -75,7 +75,7 @@ describe("validateModel", () => {
   });
 
   test("network error (DNS/connection) — returns error mentioning connectivity", async () => {
-    vi.spyOn(globalThis, "fetch").mockRejectedValue(new TypeError("fetch failed"));
+    spyOn(globalThis, "fetch").mockRejectedValue(new TypeError("fetch failed"));
 
     const result = await validateModel(BASE_URL, API_KEY, MODEL);
 
@@ -86,9 +86,9 @@ describe("validateModel", () => {
   });
 
   test("request body correctness", async () => {
-    const mockFetch = vi
+    const mockFetch = spyOn(globalThis, "fetch").mockResolvedValue(
-      .spyOn(globalThis, "fetch")
+      new Response(JSON.stringify({}), { status: 200 }),
-      .mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
+    );
 
     await validateModel(BASE_URL, API_KEY, "my-special-model");
 
@@ -109,7 +109,7 @@ describe("cmdSetup with validation", () => {
   });
 
   afterEach(async () => {
-    vi.restoreAllMocks();
+    mock.restore();
     await rm(storageRoot, { recursive: true, force: true });
   });
 
@@ -122,9 +122,7 @@ describe("cmdSetup with validation", () => {
   });
 
   test("includes validation result on success", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(new Response(JSON.stringify({}), { status: 200 }));
-      new Response(JSON.stringify({}), { status: 200 }),
-    );
 
     const result = await cmdSetup(setupArgs());
 
@@ -134,7 +132,7 @@ describe("cmdSetup with validation", () => {
   });
 
   test("includes validation failure — config still saved", async () => {
-    vi.spyOn(globalThis, "fetch").mockResolvedValue(
+    spyOn(globalThis, "fetch").mockResolvedValue(
       new Response("Unauthorized", { status: 401, statusText: "Unauthorized" }),
     );
 

packages/cli-workflow/src/__tests__/solve-issue-tea-worktree.test.ts

@@ -1,7 +1,7 @@
+import { describe, expect, test } from "bun:test";
 import { readFile } from "node:fs/promises";
 import { join } from "node:path";
 import type { WorkflowPayload } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { parse } from "yaml";
 
 /**

packages/cli-workflow/src/__tests__/spawn-agent-json.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, test } from "bun:test";
 
 /**
  * B-group tests: validate JSON parsing logic used by spawnAgent.

packages/cli-workflow/src/__tests__/step-read.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { bootstrap, putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdStepRead } from "../commands/step.js";
 import { registerUwfSchemas } from "../schemas.js";
 

packages/cli-workflow/src/__tests__/step-show-json.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { bootstrap, type Hash, type JSONSchema, putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, StepNodePayload } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdStepShow } from "../commands/step.js";
 import { formatOutput } from "../format.js";
 import { registerUwfSchemas } from "../schemas.js";

packages/cli-workflow/src/__tests__/step-timing.test.ts

@@ -1,3 +1,4 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
@@ -5,7 +6,6 @@ import { bootstrap, putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
 import { STEP_NODE_SCHEMA } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdStepList } from "../commands/step.js";
 import { cmdThreadRead } from "../commands/thread.js";
 import { registerUwfSchemas } from "../schemas.js";

packages/cli-workflow/src/__tests__/store-global-cas.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { createUwfStore, getCasDir, getGlobalCasDir } from "../store.js";
 
 describe("Global CAS directory", () => {

packages/cli-workflow/src/__tests__/thread-cancel-status.test.ts

@@ -1,8 +1,8 @@
+import { describe, expect, test } from "bun:test";
 import { mkdtemp } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { appendThreadHistory, loadThreadHistory } from "../store.js";
 
 describe("thread cancel status", () => {

packages/cli-workflow/src/__tests__/thread-list-filters.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
 import { createThreadIndexEntry } from "@uncaged/workflow-protocol";
 import { extractUlidTimestamp, generateUlid } from "@uncaged/workflow-util";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { createMarker, deleteMarker } from "../background/index.js";
 import { cmdThreadList } from "../commands/thread.js";
 import { parseTimeInput } from "../commands/thread-time-parser.js";

packages/cli-workflow/src/__tests__/thread-location.test.ts

@@ -1,8 +1,8 @@
+import { describe, expect, test } from "bun:test";
 import { mkdir, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import type { CasRef, StartNodePayload, ThreadId } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { cmdThreadStart } from "../commands/thread.js";
 import { createUwfStore } from "../store.js";
 
@@ -128,7 +128,7 @@ graph:
     const workflowPath = join(tmpDir, "test-location.yaml");
     await writeFile(workflowPath, workflowYaml, "utf8");
 
-    // Relative path should fail (process.exit is wrapped by vitest)
+    // Relative path should fail via fail() → process.exit (mocked in test preload)
     await expect(
       cmdThreadStart(storageRoot, workflowPath, "test", tmpDir, "relative/path"),
     ).rejects.toThrow();

packages/cli-workflow/src/__tests__/thread-read-quota.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { bootstrap, putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdThreadRead } from "../commands/thread.js";
 import { registerUwfSchemas } from "../schemas.js";
 import { saveThreadsIndex } from "../store.js";

packages/cli-workflow/src/__tests__/thread-read-xml-tags.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { bootstrap, putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdThreadRead, THREAD_READ_DEFAULT_QUOTA } from "../commands/thread.js";
 import { registerUwfSchemas } from "../schemas.js";
 import type { UwfStore } from "../store.js";

packages/cli-workflow/src/__tests__/thread-resume.test.ts

@@ -1,3 +1,4 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { execFileSync } from "node:child_process";
 import { mkdir, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
@@ -5,7 +6,6 @@ import { join } from "node:path";
 import { putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, StepNodePayload, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { parse } from "yaml";
 import { cmdThreadShow } from "../commands/thread.js";
 import { registerUwfSchemas } from "../schemas.js";

packages/cli-workflow/src/__tests__/thread-show-status.test.ts

@@ -1,9 +1,9 @@
+import { describe, expect, test } from "bun:test";
 import { mkdir, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { putSchema } from "@ocas/core";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { createMarker, deleteMarker } from "../background/index.js";
 import { cmdThreadShow, cmdThreadStart } from "../commands/thread.js";
 import {

packages/cli-workflow/src/__tests__/thread-start-cwd-cli.test.ts

@@ -1,9 +1,9 @@
+import { describe, expect, test } from "bun:test";
 import { execFileSync } from "node:child_process";
 import { mkdir, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import type { CasRef, StartNodePayload, ThreadId } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { cmdThreadStart } from "../commands/thread.js";
 import { createUwfStore, loadThreadsIndex } from "../store.js";
 
@@ -136,14 +136,14 @@ graph:
     const uwfBin = join(process.cwd(), "dist", "cli.js");
 
     // Register the workflow
-    execFileSync("node", [uwfBin, "workflow", "add", workflowPath], {
+    execFileSync("bun", [uwfBin, "workflow", "add", workflowPath], {
       env: { ...process.env, UWF_STORAGE_ROOT: storageRoot, UNCAGED_CAS_DIR: casDir },
       encoding: "utf8",
     });
 
     // Verify CLI accepts --cwd option (no error thrown)
     const output = execFileSync(
-      "node",
+      "bun",
       [uwfBin, "thread", "start", "test-cwd-cli", "-p", "test prompt", "--cwd", testCwd],
       {
         env: { ...process.env, UWF_STORAGE_ROOT: storageRoot, UNCAGED_CAS_DIR: casDir },

packages/cli-workflow/src/__tests__/thread-step-count.test.ts

@@ -1,6 +1,6 @@
+import { describe, expect, test } from "bun:test";
 import { execFileSync } from "node:child_process";
 import { join } from "node:path";
-import { describe, expect, test } from "vitest";
 
 const CLI_PATH = join(import.meta.dirname, "..", "cli.js");
 

packages/cli-workflow/src/__tests__/thread-suspend-step.test.ts

@@ -1,3 +1,4 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { execFileSync } from "node:child_process";
 import { mkdir, mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
@@ -5,7 +6,6 @@ import { join } from "node:path";
 import { putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, StepNodePayload, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { parse } from "yaml";
 import { cmdThreadShow } from "../commands/thread.js";
 import { registerUwfSchemas } from "../schemas.js";

packages/cli-workflow/src/__tests__/thread-suspended-display.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { putSchema } from "@ocas/core";
 import type { ThreadId } from "@uncaged/workflow-protocol";
 import { createThreadIndexEntry, markThreadSuspended } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdThreadList, cmdThreadShow } from "../commands/thread.js";
 import { createUwfStore, saveThreadsIndex } from "../store.js";
 

packages/cli-workflow/src/__tests__/thread.test.ts

@@ -1,10 +1,10 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { bootstrap, putSchema } from "@ocas/core";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdStepList, cmdStepShow } from "../commands/step.js";
 import {
   cmdThreadRead,

packages/cli-workflow/src/__tests__/validate-semantic.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import type { WorkflowPayload } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { validateWorkflow } from "../validate-semantic.js";
 
 /** Build a valid two-role workflow that passes all checks. */

packages/cli-workflow/src/__tests__/workflow-resolution.test.ts

@@ -1,9 +1,9 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm, writeFile } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { createFsStore } from "@ocas/fs";
 import type { CasRef, WorkflowPayload } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { stringify } from "yaml";
 import { cmdThreadStart } from "../commands/thread.js";
 import { registerUwfSchemas } from "../schemas.js";

packages/cli-workflow/src/moderator/__tests__/evaluate.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, test } from "bun:test";
 import { evaluate } from "../evaluate.js";
 import { isSuspendResult } from "../types.js";
 

packages/cli-workflow/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});

packages/workflow-agent-builtin/package.json

@@ -19,8 +19,8 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test __tests__/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test __tests__/"
   },
   "dependencies": {
     "@ocas/core": "^0.1.1",

packages/workflow-agent-builtin/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});

packages/workflow-agent-claude-code/package.json

@@ -19,8 +19,8 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test __tests__/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test __tests__/"
   },
   "dependencies": {
     "@ocas/core": "^0.1.1",

packages/workflow-agent-claude-code/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});

packages/workflow-agent-hermes/package.json

@@ -19,8 +19,8 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test __tests__/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test __tests__/"
   },
   "dependencies": {
     "@ocas/core": "^0.1.1",

packages/workflow-agent-hermes/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});

packages/workflow-dashboard/package.json

@@ -6,8 +6,8 @@
   "scripts": {
     "dev": "bun server.ts",
     "build": "vite build",
-    "test": "vitest run",
+    "test": "bun test src/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test src/"
   },
   "dependencies": {
     "@base-ui/react": "^1.5.0",
@@ -33,10 +33,8 @@
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^6.0.2",
-    "@vitest/ui": "^4.1.7",
     "tailwindcss": "^4.2.4",
     "typescript": "^5.8.3",
-    "vite": "^8.0.13",
+    "vite": "^8.0.13"
-    "vitest": "^4.1.7"
   }
 }

packages/workflow-dashboard/src/editor/layout/__tests__/layout.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, it } from "bun:test";
 import type { Edge, Node } from "@xyflow/react";
-import { describe, expect, it } from "vitest";
 import { LayoutLR } from "../index.js";
 
 function makeNode(id: string): Node {

packages/workflow-dashboard/src/editor/trans/__tests__/trans-in.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it } from "bun:test";
 import { transIn } from "../trans-in.js";
 import type { WorkFlowStep } from "../type.js";
 

packages/workflow-dashboard/src/editor/trans/__tests__/validate.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it } from "bun:test";
 import type { AnyWorkEdge, AnyWorkNode } from "../../type.js";
 import { validate } from "../validate.js";
 

packages/workflow-dashboard/vitest.config.ts

@@ -1,14 +0,0 @@
-import path from "node:path";
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    environment: "node",
-    include: ["src/**/__tests__/**/*.test.ts"],
-  },
-  resolve: {
-    alias: {
-      "@": path.resolve(import.meta.dirname, "./src"),
-    },
-  },
-});

packages/workflow-protocol/package.json

@@ -16,8 +16,8 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test src/__tests__/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test src/__tests__/"
   },
   "dependencies": {
     "@ocas/core": "^0.1.1",

packages/workflow-protocol/src/__tests__/thread-index.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, test } from "bun:test";
 import {
   createThreadIndexEntry,
   markThreadSuspended,

packages/workflow-protocol/src/__tests__/types.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, test } from "bun:test";
 import type { StartNodePayload, StepRecord, Target } from "../types.js";
 
 describe("Protocol types for thread/edge location", () => {

packages/workflow-protocol/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});

packages/workflow-util-agent/__tests__/adapter-retry.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import { createMemoryStore, putSchema } from "@ocas/core";
-import { describe, expect, test } from "vitest";
 
 import { tryFrontmatterFastPath } from "../src/frontmatter.js";
 

packages/workflow-util-agent/__tests__/adapter-stdout.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import { createMemoryStore, putSchema } from "@ocas/core";
-import { describe, expect, test } from "vitest";
 
 import { tryFrontmatterFastPath } from "../src/frontmatter.js";
 

packages/workflow-util-agent/__tests__/build-continuation-prompt.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import type { StepContext } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { buildContinuationPrompt } from "../src/build-continuation-prompt.js";
 
 const reviewerStep: StepContext = {

packages/workflow-util-agent/__tests__/build-output-format-instruction.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, test } from "bun:test";
 
 import { buildOutputFormatInstruction } from "../src/build-output-format-instruction.js";
 

packages/workflow-util-agent/__tests__/build-role-prompt.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import type { RoleDefinition } from "@uncaged/workflow-protocol";
-import { describe, expect, test } from "vitest";
 import { buildRolePrompt } from "../src/build-role-prompt.js";
 
 describe("buildRolePrompt", () => {

packages/workflow-util-agent/__tests__/context.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, test } from "bun:test";
 
 // We need to test buildHistory indirectly through buildContext
 // since buildHistory is not exported. For now, we'll test the integration

packages/workflow-util-agent/__tests__/frontmatter-fast-path.test.ts

@@ -1,5 +1,5 @@
+import { describe, expect, test } from "bun:test";
 import { createMemoryStore, putSchema } from "@ocas/core";
-import { describe, expect, test } from "vitest";
 
 import { tryFrontmatterFastPath } from "../src/frontmatter.js";
 

packages/workflow-util-agent/__tests__/session-cache.test.ts

@@ -1,7 +1,7 @@
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 import { mkdir, readdir, readFile, rm, stat, writeFile } from "node:fs/promises";
 import { dirname, join } from "node:path";
 import type { ThreadId } from "@uncaged/workflow-protocol";
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
 
 import { getCachedSessionId, getCachePath, setCachedSessionId } from "../src/session-cache.js";
 import { resolveStorageRoot } from "../src/storage.js";

packages/workflow-util-agent/package.json

@@ -16,8 +16,8 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test __tests__/ src/__tests__/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test __tests__/ src/__tests__/"
   },
   "dependencies": {
     "@ocas/core": "^0.1.1",

packages/workflow-util-agent/src/__tests__/parseArgv.test.ts

@@ -1,4 +1,4 @@
-import { afterEach, beforeEach, describe, expect, test } from "vitest";
+import { afterEach, beforeEach, describe, expect, test } from "bun:test";
 
 describe("parseArgv empty prompt error message", () => {
   let stderrOutput: string;

packages/workflow-util-agent/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});

packages/workflow-util/__tests__/frontmatter-markdown.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it } from "bun:test";
 import type { AgentFrontmatter } from "../src/index.js";
 import { parseFrontmatterMarkdown, validateFrontmatter } from "../src/index.js";
 

packages/workflow-util/package.json

@@ -16,8 +16,8 @@
   },
   "scripts": {
     "prepublishOnly": "echo 'Use bun run release from repo root' && exit 1",
-    "test": "vitest run",
+    "test": "bun test __tests__/ src/__tests__/",
-    "test:ci": "vitest run"
+    "test:ci": "bun test __tests__/ src/__tests__/"
   },
   "dependencies": {},
   "devDependencies": {

packages/workflow-util/src/__tests__/ulid-timestamp.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it } from "bun:test";
 import { extractUlidTimestamp, generateUlid } from "../ulid.js";
 
 describe("extractUlidTimestamp", () => {

packages/workflow-util/vitest.config.ts

@@ -1,8 +0,0 @@
-import { defineConfig } from "vitest/config";
-
-export default defineConfig({
-  test: {
-    include: ["src/__tests__/**/*.test.ts"],
-    passWithNoTests: true,
-  },
-});