revert: use rewriteRelativeImportExtensions for NextNode .d.ts resolve

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

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