Use explicit ts specifiers for declarations

Restore explicit .ts relative specifiers in source and enable rewriteRelativeImportExtensions so emitted JS uses .js while declarations keep explicit .ts specifiers. Add a NodeNext declaration-consumer gate to prevent extensionless declaration regressions.

packages/llm/llm-deepseek/src/adapter.ts

@@ -7,11 +7,11 @@
 
 import { LlmAdapter, LlmError } from '@deepseek-ai/dsh-llm'
 import type { GenerateOptions, StreamChunk } from '@deepseek-ai/dsh-llm'
-import { serializeRequest } from './serialize'
-import type { RequestDefaults } from './serialize'
-import { parseSse } from './sse'
-import { translate } from './translate'
-import type { WireError } from './types'
+import { serializeRequest } from './serialize.ts'
+import type { RequestDefaults } from './serialize.ts'
+import { parseSse } from './sse.ts'
+import { translate } from './translate.ts'
+import type { WireError } from './types.ts'
 
 export interface DeepSeekAdapterOptions {
   apiKey: string

packages/llm/llm-deepseek/src/index.ts

@@ -21,15 +21,15 @@
 import type { Context } from 'cordis'
 import z from 'schemastery'
 import type {} from '@deepseek-ai/dsh-llm'
-import { DeepSeekAdapter } from './adapter'
+import { DeepSeekAdapter } from './adapter.ts'
 
-export { DeepSeekAdapter, httpErrorCode } from './adapter'
-export type { DeepSeekAdapterOptions } from './adapter'
-export { serializeMessages, serializeRequest } from './serialize'
-export type { RequestDefaults } from './serialize'
-export { DONE, parseSse } from './sse'
-export { mapFinishReason, mapUsage, translate } from './translate'
-export type * from './types'
+export { DeepSeekAdapter, httpErrorCode } from './adapter.ts'
+export type { DeepSeekAdapterOptions } from './adapter.ts'
+export { serializeMessages, serializeRequest } from './serialize.ts'
+export type { RequestDefaults } from './serialize.ts'
+export { DONE, parseSse } from './sse.ts'
+export { mapFinishReason, mapUsage, translate } from './translate.ts'
+export type * from './types.ts'
 
 export const name = 'llm-deepseek'
 export const inject = ['llm']

packages/llm/llm-deepseek/src/serialize.ts

@@ -18,7 +18,7 @@
 
 import { LlmError } from '@deepseek-ai/dsh-llm'
 import type { ContentBlock, GenerateOptions, Message } from '@deepseek-ai/dsh-llm'
-import type { WireMessage, WireRequest, WireTool } from './types'
+import type { WireMessage, WireRequest, WireTool } from './types.ts'
 
 /** Adapter-level request defaults (from plugin config). */
 export interface RequestDefaults {

packages/llm/llm-deepseek/src/translate.ts

@@ -16,8 +16,8 @@
 
 import { CallId, LlmError } from '@deepseek-ai/dsh-llm'
 import type { ContentBlock, FinishReason, StreamChunk, TokenUsage } from '@deepseek-ai/dsh-llm'
-import { DONE } from './sse'
-import type { WireChunk, WireUsage } from './types'
+import { DONE } from './sse.ts'
+import type { WireChunk, WireUsage } from './types.ts'
 
 /** One open block under assembly. */
 interface OpenBlock {