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/adapter.py

@@ -7,10 +7,9 @@ multiple providers (OpenAI, Anthropic, local models, etc.).
 
 import asyncio
 from abc import ABC, abstractmethod
-from typing import Dict, Any
 
-from llm_connect.models import RunConfig, LLMResponse, BudgetTracker
 from llm_connect.exceptions import LLMBudgetExceededError
+from llm_connect.models import LLMResponse, RunConfig
 
 
 class LLMAdapter(ABC):
@@ -131,8 +130,8 @@ class MockLLMAdapter(LLMAdapter):
         """
         self.mock_response = mock_response
         self.call_count = 0
-        self.last_prompt = None
-        self.last_config = None
+        self.last_prompt: str | None = None
+        self.last_config: RunConfig | None = None
 
     def execute_prompt(
         self,