From 67317938595e2b4925130f5068730d4373ce366f Mon Sep 17 00:00:00 2001
From: imccyu <imccyu@users.noreply.github.com>
Date: Mon, 22 Jun 2026 09:02:58 +0800
Subject: [PATCH] revert: use rewriteRelativeImportExtensions for NextNode
 .d.ts resolve

---
 examples/acp-agent/tests/acp.snapshot.ts                    | 4 ++--
 examples/acp-agent/tests/snapshot-normalize.spec.ts         | 2 +-
 examples/coding-agent/tests/coding-task.e2e.ts              | 2 +-
 examples/coding-agent/tests/full-loop.e2e.ts                | 2 +-
 examples/coding-agent/tests/resume.e2e.ts                   | 2 +-
 packages/bash/tool-bash/tests/integration.spec.ts           | 2 +-
 packages/core/agent-core/tests/agent-core.spec.ts           | 2 +-
 packages/core/agent-loop/tests/agent.spec.ts                | 2 +-
 packages/core/agent-loop/tests/cancel.spec.ts               | 2 +-
 packages/core/agent-loop/tests/config-session-id.spec.ts    | 2 +-
 packages/core/agent-loop/tests/coverage-edges.spec.ts       | 2 +-
 packages/core/agent-loop/tests/loop.spec.ts                 | 2 +-
 packages/core/agent-loop/tests/resume.spec.ts               | 2 +-
 packages/core/agent-loop/tests/review-fixes.spec.ts         | 2 +-
 packages/core/agent/tests/gen-cordis-catalog.spec.ts        | 2 +-
 packages/core/session/tests/repair.spec.ts                  | 4 ++--
 packages/llm/llm-deepseek/tests/adapter.e2e.ts              | 2 +-
 packages/llm/llm-deepseek/tests/adapter.spec.ts             | 2 +-
 packages/llm/llm-pi-ai/tests/adapter.e2e.ts                 | 2 +-
 packages/llm/llm-pi-ai/tests/adapter.spec.ts                | 2 +-
 .../session-persistence-jsonl/tests/jsonl.spec.ts           | 6 +++---
 .../session-persistence-sqlite/tests/sqlite.spec.ts         | 6 +++---
 .../session-persistence/tests/contract.ts                   | 2 +-
 .../session-persistence/tests/coordinator-contract.ts       | 4 ++--
 .../session-persistence/tests/persistence.spec.ts           | 6 +++---
 packages/support/llm-replay/tests/llm-replay.spec.ts        | 2 +-
 packages/support/ui-stdio/tests/ui-stdio.spec.ts            | 2 +-
 packages/ui/acp-agent/tests/acp-agent.spec.ts               | 2 +-
 packages/ui/acp/tests/bridge.spec.ts                        | 2 +-
 packages/ui/acp/tests/codec.spec.ts                         | 2 +-
 packages/ui/acp/tests/dispose.spec.ts                       | 2 +-
 packages/ui/acp/tests/edges.spec.ts                         | 2 +-
 packages/ui/acp/tests/harness.ts                            | 4 ++--
 packages/ui/acp/tests/load.spec.ts                          | 2 +-
 packages/ui/acp/tests/multi-session.spec.ts                 | 2 +-
 packages/ui/acp/tests/properties.spec.ts                    | 2 +-
 packages/ui/acp/tests/stream-update.spec.ts                 | 2 +-
 packages/ui/acp/tests/turns.spec.ts                         | 2 +-
 packages/ui/stdio-agent/tests/stdio-agent.spec.ts           | 2 +-
 39 files changed, 49 insertions(+), 49 deletions(-)

diff --git a/examples/acp-agent/tests/acp.snapshot.ts b/examples/acp-agent/tests/acp.snapshot.ts
index d5a6e1551f..be6aabada0 100644
--- a/examples/acp-agent/tests/acp.snapshot.ts
+++ b/examples/acp-agent/tests/acp.snapshot.ts
@@ -3,8 +3,8 @@ import { existsSync } from 'node:fs'
 import { fileURLToPath } from 'node:url'
 import { dirname, join } from 'node:path'
 import { describe, expect, it } from 'vitest'
-import { type InputScript, runScenario } from './snapshot-harness'
-import { type NormalizeContext, normalizeSessionLog, normalizeStdout } from './snapshot-normalize'
+import { type InputScript, runScenario } from './snapshot-harness.ts'
+import { type NormalizeContext, normalizeSessionLog, normalizeStdout } from './snapshot-normalize.ts'
 
 /**
  * ACP snapshot tests (REPLAY by default, keyless). Each scenario under
diff --git a/examples/acp-agent/tests/snapshot-normalize.spec.ts b/examples/acp-agent/tests/snapshot-normalize.spec.ts
index a83d7682e0..b220344bb9 100644
--- a/examples/acp-agent/tests/snapshot-normalize.spec.ts
+++ b/examples/acp-agent/tests/snapshot-normalize.spec.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import { type NormalizeContext, normalizeSessionLog, normalizeStdout } from '../tests/snapshot-normalize'
+import { type NormalizeContext, normalizeSessionLog, normalizeStdout } from '../tests/snapshot-normalize.ts'
 
 /**
  * Unit tests for the pure snapshot normalizers. Live as a *.spec.ts (runs in
diff --git a/examples/coding-agent/tests/coding-task.e2e.ts b/examples/coding-agent/tests/coding-task.e2e.ts
index 2f3dc2ae3b..68bca5cdfa 100644
--- a/examples/coding-agent/tests/coding-task.e2e.ts
+++ b/examples/coding-agent/tests/coding-task.e2e.ts
@@ -5,7 +5,7 @@ import { join } from 'node:path'
 import { afterEach, describe, expect, it } from 'vitest'
 import type { Context } from 'cordis'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
 
 /**
  * The swebench-style smoke test: a real model fixes a real bug in a temp
diff --git a/examples/coding-agent/tests/full-loop.e2e.ts b/examples/coding-agent/tests/full-loop.e2e.ts
index 7a511d6d99..2b70d6f339 100644
--- a/examples/coding-agent/tests/full-loop.e2e.ts
+++ b/examples/coding-agent/tests/full-loop.e2e.ts
@@ -1,7 +1,7 @@
 import { afterEach, describe, expect, it } from 'vitest'
 import type { Context } from 'cordis'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
 
 /**
  * The first place a REAL model meets the REAL bash tool: the cheap canary
diff --git a/examples/coding-agent/tests/resume.e2e.ts b/examples/coding-agent/tests/resume.e2e.ts
index c829f34ced..450938fc6d 100644
--- a/examples/coding-agent/tests/resume.e2e.ts
+++ b/examples/coding-agent/tests/resume.e2e.ts
@@ -6,7 +6,7 @@ import type { Context } from 'cordis'
 import type { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
 import { AgentId } from '@deepseek-ai/dsh-agent'
 import { SessionId } from '@deepseek-ai/dsh-session'
-import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness'
+import { codingHarness, finalText, SYSTEM_PROMPT, waitForIdle } from './harness.ts'
 
 /**
  * Proves durable conversation continuity end-to-end: run 1 tells the REAL model
diff --git a/packages/bash/tool-bash/tests/integration.spec.ts b/packages/bash/tool-bash/tests/integration.spec.ts
index 154d3dc67a..a67809ffee 100644
--- a/packages/bash/tool-bash/tests/integration.spec.ts
+++ b/packages/bash/tool-bash/tests/integration.spec.ts
@@ -10,7 +10,7 @@ import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
 import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
 import { BashTaskId } from '@deepseek-ai/dsh-bash'
 import * as ToolBash from '@deepseek-ai/dsh-tool-bash'
-import { MockAdapter, textResponse, toolCallResponse } from '../../../core/agent-loop/tests/mock-adapter'
+import { MockAdapter, textResponse, toolCallResponse } from '../../../core/agent-loop/tests/mock-adapter.ts'
 
 /**
  * Full-loop integration: a scripted mock model drives the REAL bash tool
diff --git a/packages/core/agent-core/tests/agent-core.spec.ts b/packages/core/agent-core/tests/agent-core.spec.ts
index fe3d89eca6..67f5d88532 100644
--- a/packages/core/agent-core/tests/agent-core.spec.ts
+++ b/packages/core/agent-core/tests/agent-core.spec.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'vitest'
 import { Context } from 'cordis'
 import Loader from '@cordisjs/plugin-loader'
-import * as agentCore from '../src/index'
+import * as agentCore from '../src/index.ts'
 import { AgentId } from '@deepseek-ai/dsh-agent'
 
 /**
diff --git a/packages/core/agent-loop/tests/agent.spec.ts b/packages/core/agent-loop/tests/agent.spec.ts
index 54ebc9fdc5..ed163bf4c2 100644
--- a/packages/core/agent-loop/tests/agent.spec.ts
+++ b/packages/core/agent-loop/tests/agent.spec.ts
@@ -7,7 +7,7 @@ import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry from '@deepseek-ai/dsh-tools'
 import AgentRegistry from '@deepseek-ai/dsh-agent'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
-import { MockAdapter, textResponse } from './mock-adapter'
+import { MockAdapter, textResponse } from './mock-adapter.ts'
 
 async function harness(adapter: MockAdapter) {
   const ctx = new Context()
diff --git a/packages/core/agent-loop/tests/cancel.spec.ts b/packages/core/agent-loop/tests/cancel.spec.ts
index 71b1b80ea4..9cdaa1973b 100644
--- a/packages/core/agent-loop/tests/cancel.spec.ts
+++ b/packages/core/agent-loop/tests/cancel.spec.ts
@@ -18,7 +18,7 @@ import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
-import { MockAdapter, textResponse } from './mock-adapter'
+import { MockAdapter, textResponse } from './mock-adapter.ts'
 
 async function harness(adapter: MockAdapter) {
   const ctx = new Context()
diff --git a/packages/core/agent-loop/tests/config-session-id.spec.ts b/packages/core/agent-loop/tests/config-session-id.spec.ts
index c3045c7f7c..8cf5bd81f8 100644
--- a/packages/core/agent-loop/tests/config-session-id.spec.ts
+++ b/packages/core/agent-loop/tests/config-session-id.spec.ts
@@ -10,7 +10,7 @@ import ToolRegistry from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
 import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
-import { MockAdapter, textResponse } from './mock-adapter'
+import { MockAdapter, textResponse } from './mock-adapter.ts'
 
 const dirs: string[] = []
 afterEach(async () => { for (const d of dirs.splice(0)) await rm(d, { recursive: true, force: true }) })
diff --git a/packages/core/agent-loop/tests/coverage-edges.spec.ts b/packages/core/agent-loop/tests/coverage-edges.spec.ts
index 2fec2b2c66..3eefbf6986 100644
--- a/packages/core/agent-loop/tests/coverage-edges.spec.ts
+++ b/packages/core/agent-loop/tests/coverage-edges.spec.ts
@@ -6,7 +6,7 @@ import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
-import { MockAdapter, textResponse, toolCallResponse } from './mock-adapter'
+import { MockAdapter, textResponse, toolCallResponse } from './mock-adapter.ts'
 
 async function harness(adapter: MockAdapter) {
   const ctx = new Context()
diff --git a/packages/core/agent-loop/tests/loop.spec.ts b/packages/core/agent-loop/tests/loop.spec.ts
index d0fb76b1e9..d018eff7a2 100644
--- a/packages/core/agent-loop/tests/loop.spec.ts
+++ b/packages/core/agent-loop/tests/loop.spec.ts
@@ -6,7 +6,7 @@ import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
-import { MockAdapter, maxTokensResponse, textResponse, toolCallResponse } from './mock-adapter'
+import { MockAdapter, maxTokensResponse, textResponse, toolCallResponse } from './mock-adapter.ts'
 
 async function harness(adapter: MockAdapter) {
   const ctx = new Context()
diff --git a/packages/core/agent-loop/tests/resume.spec.ts b/packages/core/agent-loop/tests/resume.spec.ts
index 63b2c700e2..6192396cab 100644
--- a/packages/core/agent-loop/tests/resume.spec.ts
+++ b/packages/core/agent-loop/tests/resume.spec.ts
@@ -11,7 +11,7 @@ import ToolRegistry from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
 import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
-import { MockAdapter, textResponse } from './mock-adapter'
+import { MockAdapter, textResponse } from './mock-adapter.ts'
 
 const dirs: string[] = []
 afterEach(async () => { for (const d of dirs.splice(0)) await rm(d, { recursive: true, force: true }) })
diff --git a/packages/core/agent-loop/tests/review-fixes.spec.ts b/packages/core/agent-loop/tests/review-fixes.spec.ts
index c8e725ed26..ed0900c4a1 100644
--- a/packages/core/agent-loop/tests/review-fixes.spec.ts
+++ b/packages/core/agent-loop/tests/review-fixes.spec.ts
@@ -7,7 +7,7 @@ import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
 import AgentLoop, { ReactLoopAgent } from '@deepseek-ai/dsh-agent-loop'
 import * as Invariants from '@deepseek-ai/dsh-invariants'
-import { MockAdapter, textResponse, toolCallResponse } from './mock-adapter'
+import { MockAdapter, textResponse, toolCallResponse } from './mock-adapter.ts'
 
 /**
  * Regression tests for the findings of the first architecture review
diff --git a/packages/core/agent/tests/gen-cordis-catalog.spec.ts b/packages/core/agent/tests/gen-cordis-catalog.spec.ts
index e040b39b77..ee2ce47699 100644
--- a/packages/core/agent/tests/gen-cordis-catalog.spec.ts
+++ b/packages/core/agent/tests/gen-cordis-catalog.spec.ts
@@ -14,7 +14,7 @@ import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { afterEach, describe, expect, it } from 'vitest'
-import { collectEvents } from '../../../../scripts/gen-cordis-catalog'
+import { collectEvents } from '../../../../scripts/gen-cordis-catalog.ts'
 
 /** Write a fixture package exposing one `interface Events` block and return the
  * scan root to hand `collectEvents`. */
diff --git a/packages/core/session/tests/repair.spec.ts b/packages/core/session/tests/repair.spec.ts
index 2fa1bfae27..57422e7719 100644
--- a/packages/core/session/tests/repair.spec.ts
+++ b/packages/core/session/tests/repair.spec.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'vitest'
 import { CallId } from '@deepseek-ai/dsh-llm'
-import { interruptedTurnClosers } from '../src/index'
-import type { SessionEvent } from '../src/index'
+import { interruptedTurnClosers } from '../src/index.ts'
+import type { SessionEvent } from '../src/index.ts'
 
 /**
  * Unit coverage for the crash-recovery closer synthesis. The persistence
diff --git a/packages/llm/llm-deepseek/tests/adapter.e2e.ts b/packages/llm/llm-deepseek/tests/adapter.e2e.ts
index 51fbdbd187..b01b498dff 100644
--- a/packages/llm/llm-deepseek/tests/adapter.e2e.ts
+++ b/packages/llm/llm-deepseek/tests/adapter.e2e.ts
@@ -4,7 +4,7 @@ import LlmService, { CallId } from '@deepseek-ai/dsh-llm'
 import type { Message, ToolSchema } from '@deepseek-ai/dsh-llm'
 import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
 import type { Config } from '@deepseek-ai/dsh-llm-deepseek'
-import { assemble, type AssembledResult } from './assemble'
+import { assemble, type AssembledResult } from './assemble.ts'
 
 /**
  * Real-API e2e for the hand-rolled adapter: V4 Flash + V4 Pro across
diff --git a/packages/llm/llm-deepseek/tests/adapter.spec.ts b/packages/llm/llm-deepseek/tests/adapter.spec.ts
index f576831e2c..1abbebc060 100644
--- a/packages/llm/llm-deepseek/tests/adapter.spec.ts
+++ b/packages/llm/llm-deepseek/tests/adapter.spec.ts
@@ -5,7 +5,7 @@ import { Context } from 'cordis'
 import LlmService, { LlmError } from '@deepseek-ai/dsh-llm'
 import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
 import { DeepSeekAdapter, httpErrorCode } from '@deepseek-ai/dsh-llm-deepseek'
-import { assemble } from './assemble'
+import { assemble } from './assemble.ts'
 
 /** One scripted behavior for the next request the mock server receives. */
 type Behavior =
diff --git a/packages/llm/llm-pi-ai/tests/adapter.e2e.ts b/packages/llm/llm-pi-ai/tests/adapter.e2e.ts
index 678bb409fd..fa30226ddf 100644
--- a/packages/llm/llm-pi-ai/tests/adapter.e2e.ts
+++ b/packages/llm/llm-pi-ai/tests/adapter.e2e.ts
@@ -5,7 +5,7 @@ import type { Message, ToolSchema } from '@deepseek-ai/dsh-llm'
 import * as LlmPiAi from '@deepseek-ai/dsh-llm-pi-ai'
 import type { Config } from '@deepseek-ai/dsh-llm-pi-ai'
 import * as LlmDeepSeek from '@deepseek-ai/dsh-llm-deepseek'
-import { assemble, type AssembledResult } from './assemble'
+import { assemble, type AssembledResult } from './assemble.ts'
 
 /**
  * Real-API e2e for the pi-ai-backed adapter: V4 Flash + V4 Pro across all
diff --git a/packages/llm/llm-pi-ai/tests/adapter.spec.ts b/packages/llm/llm-pi-ai/tests/adapter.spec.ts
index bd09afff99..63f9f90456 100644
--- a/packages/llm/llm-pi-ai/tests/adapter.spec.ts
+++ b/packages/llm/llm-pi-ai/tests/adapter.spec.ts
@@ -5,7 +5,7 @@ import { Context } from 'cordis'
 import LlmService, { CallId, LlmError } from '@deepseek-ai/dsh-llm'
 import * as LlmPiAi from '@deepseek-ai/dsh-llm-pi-ai'
 import { buildModel, PiAiAdapter } from '@deepseek-ai/dsh-llm-pi-ai'
-import { assemble } from './assemble'
+import { assemble } from './assemble.ts'
 
 /** Scripted SSE responses, one per request (OpenAI chat-completions shape). */
 interface MockServer {
diff --git a/packages/session-persistence/session-persistence-jsonl/tests/jsonl.spec.ts b/packages/session-persistence/session-persistence-jsonl/tests/jsonl.spec.ts
index aa2a8080d5..1df70f9c9a 100644
--- a/packages/session-persistence/session-persistence-jsonl/tests/jsonl.spec.ts
+++ b/packages/session-persistence/session-persistence-jsonl/tests/jsonl.spec.ts
@@ -6,9 +6,9 @@ import { join } from 'node:path'
 import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
 import type { Session, SessionEvent } from '@deepseek-ai/dsh-session'
 import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
-import { encodeSegment, logPath, scanLog, sessionDir } from '../src/format'
-import { runPersistenceContract, meta, oneTurnLog } from '../../session-persistence/tests/contract'
-import { runCoordinatorContract, type CoordinatorFixture } from '../../session-persistence/tests/coordinator-contract'
+import { encodeSegment, logPath, scanLog, sessionDir } from '../src/format.ts'
+import { runPersistenceContract, meta, oneTurnLog } from '../../session-persistence/tests/contract.ts'
+import { runCoordinatorContract, type CoordinatorFixture } from '../../session-persistence/tests/coordinator-contract.ts'
 
 let root: string
 const dirs: string[] = []
diff --git a/packages/session-persistence/session-persistence-sqlite/tests/sqlite.spec.ts b/packages/session-persistence/session-persistence-sqlite/tests/sqlite.spec.ts
index af35c6c709..2bc9c59643 100644
--- a/packages/session-persistence/session-persistence-sqlite/tests/sqlite.spec.ts
+++ b/packages/session-persistence/session-persistence-sqlite/tests/sqlite.spec.ts
@@ -6,9 +6,9 @@ import { join } from 'node:path'
 import SessionStore, { SessionId } from '@deepseek-ai/dsh-session'
 import type { Session, SessionEvent } from '@deepseek-ai/dsh-session'
 import SessionPersistenceSqlite, { SCHEMA_VERSION } from '@deepseek-ai/dsh-session-persistence-sqlite'
-import { openDatabase, scanRows, type EventRow } from '../src/schema'
-import { runPersistenceContract, meta, oneTurnLog } from '../../session-persistence/tests/contract'
-import { runCoordinatorContract, type CoordinatorFixture } from '../../session-persistence/tests/coordinator-contract'
+import { openDatabase, scanRows, type EventRow } from '../src/schema.ts'
+import { runPersistenceContract, meta, oneTurnLog } from '../../session-persistence/tests/contract.ts'
+import { runCoordinatorContract, type CoordinatorFixture } from '../../session-persistence/tests/coordinator-contract.ts'
 
 const dirs: string[] = []
 afterEach(async () => { for (const d of dirs.splice(0)) await rm(d, { recursive: true, force: true }) })
diff --git a/packages/session-persistence/session-persistence/tests/contract.ts b/packages/session-persistence/session-persistence/tests/contract.ts
index 36356f3689..a0f0e7bfa0 100644
--- a/packages/session-persistence/session-persistence/tests/contract.ts
+++ b/packages/session-persistence/session-persistence/tests/contract.ts
@@ -12,7 +12,7 @@ import { describe, expect, it } from 'vitest'
 import { SESSION_FORMAT_VERSION, SessionId } from '@deepseek-ai/dsh-session'
 import type { SessionEvent, SessionHeader } from '@deepseek-ai/dsh-session'
 import { CallId } from '@deepseek-ai/dsh-llm'
-import type { SessionPersistence } from '../src/index'
+import type { SessionPersistence } from '../src/index.ts'
 
 /** A backend under test plus its teardown. */
 export interface ContractBackend {
diff --git a/packages/session-persistence/session-persistence/tests/coordinator-contract.ts b/packages/session-persistence/session-persistence/tests/coordinator-contract.ts
index 7eab088deb..431d02b4cb 100644
--- a/packages/session-persistence/session-persistence/tests/coordinator-contract.ts
+++ b/packages/session-persistence/session-persistence/tests/coordinator-contract.ts
@@ -30,8 +30,8 @@ import { describe, expect, it } from 'vitest'
 import { Context, type Fiber } from 'cordis'
 import SessionStore, { SESSION_FORMAT_VERSION, SessionId } from '@deepseek-ai/dsh-session'
 import type { Session, SessionEvent } from '@deepseek-ai/dsh-session'
-import type { SessionPersistence } from '../src/index'
-import { meta, oneTurnLog } from './contract'
+import type { SessionPersistence } from '../src/index.ts'
+import { meta, oneTurnLog } from './contract.ts'
 
 /**
  * The backend-specific capabilities the orchestration suite needs beyond the
diff --git a/packages/session-persistence/session-persistence/tests/persistence.spec.ts b/packages/session-persistence/session-persistence/tests/persistence.spec.ts
index cc7da9a41c..4e4cf67822 100644
--- a/packages/session-persistence/session-persistence/tests/persistence.spec.ts
+++ b/packages/session-persistence/session-persistence/tests/persistence.spec.ts
@@ -5,9 +5,9 @@ import type { Session, SessionEvent, SessionHeader } from '@deepseek-ai/dsh-sess
 import {
   SessionPersistence, PersistenceCoordinator, assertSerializable, seedCoversPrefix,
   type PersistenceBackend, type StoredPrefix,
-} from '../src/index'
-import { runPersistenceContract, meta, oneTurnLog } from './contract'
-import { runCoordinatorContract, type CoordinatorFixture } from './coordinator-contract'
+} from '../src/index.ts'
+import { runPersistenceContract, meta, oneTurnLog } from './contract.ts'
+import { runCoordinatorContract, type CoordinatorFixture } from './coordinator-contract.ts'
 
 /** The durable store shape: materialized sessions only (no lazy entries). */
 type MemoryStore = Map<string, { meta: SessionHeader; events: SessionEvent[] }>
diff --git a/packages/support/llm-replay/tests/llm-replay.spec.ts b/packages/support/llm-replay/tests/llm-replay.spec.ts
index e81f3729a0..925881273a 100644
--- a/packages/support/llm-replay/tests/llm-replay.spec.ts
+++ b/packages/support/llm-replay/tests/llm-replay.spec.ts
@@ -14,7 +14,7 @@ import {
   loadReplayScript,
   name,
   parseSessionLog,
-} from '../src/index'
+} from '../src/index.ts'
 
 /**
  * Unit tests for the replay llm/stream plugin. These drive the listener through
diff --git a/packages/support/ui-stdio/tests/ui-stdio.spec.ts b/packages/support/ui-stdio/tests/ui-stdio.spec.ts
index 72d82b539c..bd5e0f7f91 100644
--- a/packages/support/ui-stdio/tests/ui-stdio.spec.ts
+++ b/packages/support/ui-stdio/tests/ui-stdio.spec.ts
@@ -5,7 +5,7 @@ import type { Agent, AgentStatus } from '@deepseek-ai/dsh-agent'
 import AgentRegistry from '@deepseek-ai/dsh-agent'
 import type { ContentBlock } from '@deepseek-ai/dsh-llm'
 import type { Session, SessionEvent } from '@deepseek-ai/dsh-session'
-import { createStdioChat, type Config, type StdioRuntime } from '../src/index'
+import { createStdioChat, type Config, type StdioRuntime } from '../src/index.ts'
 
 /**
  * Unit tests for the stdio UI plugin. They drive the REAL plugin body
diff --git a/packages/ui/acp-agent/tests/acp-agent.spec.ts b/packages/ui/acp-agent/tests/acp-agent.spec.ts
index c8e7920669..7a02837fca 100644
--- a/packages/ui/acp-agent/tests/acp-agent.spec.ts
+++ b/packages/ui/acp-agent/tests/acp-agent.spec.ts
@@ -1,7 +1,7 @@
 import { describe, expect, it } from 'vitest'
 import { Context } from 'cordis'
 import Loader from '@cordisjs/plugin-loader'
-import * as acpAgent from '../src/index'
+import * as acpAgent from '../src/index.ts'
 
 /**
  * In-process unit coverage for the @deepseek-ai/dsh-acp-agent composition:
diff --git a/packages/ui/acp/tests/bridge.spec.ts b/packages/ui/acp/tests/bridge.spec.ts
index 8089894ba1..e9ebca8d62 100644
--- a/packages/ui/acp/tests/bridge.spec.ts
+++ b/packages/ui/acp/tests/bridge.spec.ts
@@ -4,7 +4,7 @@ import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import { makeBridgeHarness, textResponse, type BridgeHarness } from './harness'
+import { makeBridgeHarness, textResponse, type BridgeHarness } from './harness.ts'
 
 /**
  * End-to-end bridge specs over an in-memory transport: a real
diff --git a/packages/ui/acp/tests/codec.spec.ts b/packages/ui/acp/tests/codec.spec.ts
index 6149d35227..9d82fe7533 100644
--- a/packages/ui/acp/tests/codec.spec.ts
+++ b/packages/ui/acp/tests/codec.spec.ts
@@ -6,7 +6,7 @@ import {
   harnessBlockToAcpContent,
   promptHasUnsupportedContent,
   turnEndToStopReason,
-} from '../src/codec'
+} from '../src/codec.ts'
 
 describe('turnEndToStopReason', () => {
   // The SDK rejects an unknown stopReason, so this must be total over every
diff --git a/packages/ui/acp/tests/dispose.spec.ts b/packages/ui/acp/tests/dispose.spec.ts
index 79d18612cc..ac092d9d16 100644
--- a/packages/ui/acp/tests/dispose.spec.ts
+++ b/packages/ui/acp/tests/dispose.spec.ts
@@ -5,7 +5,7 @@ import { join } from 'node:path'
 import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
 import { SessionId } from '@deepseek-ai/dsh-session'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import { makeBridgeHarness, textResponse } from './harness'
+import { makeBridgeHarness, textResponse } from './harness.ts'
 
 describe('acp bridge — disposal & HMR safety', () => {
   let storageDir: string
diff --git a/packages/ui/acp/tests/edges.spec.ts b/packages/ui/acp/tests/edges.spec.ts
index 1d31769202..69c935139d 100644
--- a/packages/ui/acp/tests/edges.spec.ts
+++ b/packages/ui/acp/tests/edges.spec.ts
@@ -5,7 +5,7 @@ import { join } from 'node:path'
 import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
 import { AgentId } from '@deepseek-ai/dsh-agent'
 import { SessionId } from '@deepseek-ai/dsh-session'
-import { makeBridgeHarness, textResponse, type BridgeHarness } from './harness'
+import { makeBridgeHarness, textResponse, type BridgeHarness } from './harness.ts'
 
 describe('acp bridge — demux & config edges', () => {
   let storageDir: string
diff --git a/packages/ui/acp/tests/harness.ts b/packages/ui/acp/tests/harness.ts
index 4b41b013bd..4f6b5ac17a 100644
--- a/packages/ui/acp/tests/harness.ts
+++ b/packages/ui/acp/tests/harness.ts
@@ -30,8 +30,8 @@ import {
   type SessionNotification,
   type Stream,
 } from '@agentclientprotocol/sdk'
-import * as AcpPlugin from '../src/index'
-import { type AcpConfig } from '../src/index'
+import * as AcpPlugin from '../src/index.ts'
+import { type AcpConfig } from '../src/index.ts'
 
 /** A scripted mock adapter (mirrors the agent-loop test adapter). */
 class MockAdapter extends LlmAdapter {
diff --git a/packages/ui/acp/tests/load.spec.ts b/packages/ui/acp/tests/load.spec.ts
index d0da3e5cd6..a87fa49a9e 100644
--- a/packages/ui/acp/tests/load.spec.ts
+++ b/packages/ui/acp/tests/load.spec.ts
@@ -5,7 +5,7 @@ import { join } from 'node:path'
 import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
 import { SESSION_FORMAT_VERSION, SessionId } from '@deepseek-ai/dsh-session'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import { makeBridgeHarness, textResponse, toolCallResponse, type BridgeHarness, type CapturedUpdate } from './harness'
+import { makeBridgeHarness, textResponse, toolCallResponse, type BridgeHarness, type CapturedUpdate } from './harness.ts'
 
 /** Concatenate the text of all agent_message_chunk updates. */
 function messageText(updates: CapturedUpdate[]): string {
diff --git a/packages/ui/acp/tests/multi-session.spec.ts b/packages/ui/acp/tests/multi-session.spec.ts
index d93f45a4b9..ca11934046 100644
--- a/packages/ui/acp/tests/multi-session.spec.ts
+++ b/packages/ui/acp/tests/multi-session.spec.ts
@@ -4,7 +4,7 @@ import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 import { PROTOCOL_VERSION } from '@agentclientprotocol/sdk'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import { makeBridgeHarness, textResponse, type BridgeHarness, type CapturedUpdate } from './harness'
+import { makeBridgeHarness, textResponse, type BridgeHarness, type CapturedUpdate } from './harness.ts'
 
 /** Text of the agent_message_chunk updates scoped to one session id. */
 function messageTextFor(updates: { sessionId?: string; update: CapturedUpdate }[], sessionId: string): string {
diff --git a/packages/ui/acp/tests/properties.spec.ts b/packages/ui/acp/tests/properties.spec.ts
index fec9ebcacd..3dcb4c760f 100644
--- a/packages/ui/acp/tests/properties.spec.ts
+++ b/packages/ui/acp/tests/properties.spec.ts
@@ -19,7 +19,7 @@ import fc from 'fast-check'
 import { CallId } from '@deepseek-ai/dsh-llm'
 import { SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
 import type { SessionNotification } from '@agentclientprotocol/sdk'
-import { streamSessionEventUpdate } from '../src/index'
+import { streamSessionEventUpdate } from '../src/index.ts'
 
 const LEGAL_UPDATE_KINDS = new Set([
   'agent_message_chunk',
diff --git a/packages/ui/acp/tests/stream-update.spec.ts b/packages/ui/acp/tests/stream-update.spec.ts
index 34271a3350..30cbd17c40 100644
--- a/packages/ui/acp/tests/stream-update.spec.ts
+++ b/packages/ui/acp/tests/stream-update.spec.ts
@@ -3,7 +3,7 @@ import { CallId } from '@deepseek-ai/dsh-llm'
 import { SessionId, type SessionEvent } from '@deepseek-ai/dsh-session'
 import type { SessionNotification } from '@agentclientprotocol/sdk'
 import type { ToolDefinition, ToolRegistry } from '@deepseek-ai/dsh-tools'
-import { streamSessionEventUpdate, agentOptions, ToolPresenter } from '../src/index'
+import { streamSessionEventUpdate, agentOptions, ToolPresenter } from '../src/index.ts'
 
 /** Collect the updates a single event produces (no presenter → generic fallback). */
 function updatesFor(event: SessionEvent): SessionNotification['update'][] {
diff --git a/packages/ui/acp/tests/turns.spec.ts b/packages/ui/acp/tests/turns.spec.ts
index 7a032d0f2f..7634602a35 100644
--- a/packages/ui/acp/tests/turns.spec.ts
+++ b/packages/ui/acp/tests/turns.spec.ts
@@ -12,7 +12,7 @@ import {
   textResponse,
   toolCallResponse,
   type BridgeHarness,
-} from './harness'
+} from './harness.ts'
 
 /** Boilerplate: initialize + create one session, returning its id. */
 async function newSession(h: BridgeHarness, clientCapabilities: Record<string, unknown> = {}): Promise<string> {
diff --git a/packages/ui/stdio-agent/tests/stdio-agent.spec.ts b/packages/ui/stdio-agent/tests/stdio-agent.spec.ts
index a5dc1fbf90..f72de0a1da 100644
--- a/packages/ui/stdio-agent/tests/stdio-agent.spec.ts
+++ b/packages/ui/stdio-agent/tests/stdio-agent.spec.ts
@@ -2,7 +2,7 @@ import { describe, it, expect } from 'vitest'
 import { Context } from 'cordis'
 import Loader from '@cordisjs/plugin-loader'
 import { AgentId } from '@deepseek-ai/dsh-agent'
-import * as stdioAgent from '../src/index'
+import * as stdioAgent from '../src/index.ts'
 
 /**
  * Unit coverage for the @deepseek-ai/dsh-stdio-agent app plugin: mounting it