revert: use rewriteRelativeImportExtensions for NextNode .d.ts resolve

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 {

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

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[] }>