fix: retain LLM HTTP status metadata

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

@@ -76,7 +76,7 @@ export class DeepSeekAdapter extends LlmAdapter {
         // Only swallow error-body parsing: status and code are already captured,
         // so malformed gateway JSON must not mask the actionable HTTP failure.
       }
-      throw new LlmError(message, code)
+      throw new LlmError(message, code, response.status)
     }
     if (!response.body) {
       throw new LlmError('DeepSeek API returned no response body', 'EMPTY_RESPONSE')

packages/llm/llm-deepseek/tests/adapter.spec.ts

@@ -158,7 +158,7 @@ describe('DeepSeekAdapter against a mock server', () => {
       status,
       body: JSON.stringify({ error: { message: `failed with ${status}`, type: 't', code: 'c' } }),
     }
-    const server = await mockServer([behavior, behavior])
+    const server = await mockServer([behavior, behavior, behavior])
     const ctx = await harness(server.url)
     await expect(assemble(ctx,{ model: 'deepseek-v4-flash', messages: [] }))
       .rejects.toThrow(`failed with ${status}`)
@@ -166,6 +166,11 @@ describe('DeepSeekAdapter against a mock server', () => {
       assemble(ctx,{ model: 'deepseek-v4-flash', messages: [] })
         .catch((error: unknown) => (error as LlmError).code),
     ).resolves.toBe(code)
+    // The numeric HTTP status is carried on the error for explicit handling.
+    await expect(
+      assemble(ctx,{ model: 'deepseek-v4-flash', messages: [] })
+        .catch((error: unknown) => (error as LlmError).status),
+    ).resolves.toBe(status)
   })
 
   it('keeps the status-line message for JSON error bodies without a message', async () => {