Close local release-quality gaps and reconcile workplan status

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a0e332-3365-77c0-8491-084e9ea33ac1

llm_connect/claude_code.py

@@ -7,7 +7,6 @@ import json
 import os
 import subprocess
 from pathlib import Path
-from typing import Optional
 
 from llm_connect._diagnostics import (
     record_adapter_transformation,
@@ -30,9 +29,9 @@ class ClaudeCodeAdapter(LLMAdapter):
 
     def __init__(
         self,
-        cli_path: Optional[str] = None,
-        model: Optional[str] = None,
-        config: Optional[LLMConfig] = None,
+        cli_path: str | None = None,
+        model: str | None = None,
+        config: LLMConfig | None = None,
     ):
         self._config = config or LLMConfig(provider="claude-code")
         self._cli_path = cli_path or self._resolve_cli_path()
@@ -124,6 +123,7 @@ class ClaudeCodeAdapter(LLMAdapter):
             status=proc.returncode,
             body={"stdout": stdout, "stderr": stderr},
         )
+        assert proc.returncode is not None  # communicate() has reaped the process.
         if proc.returncode != 0:
             raise LLMSubprocessError(
                 f"claude CLI exited with code {proc.returncode}",