refactor(ai_client): 14 module globals → provider_state.get_history() pattern

src/provider_state.py

@@ -22,11 +22,28 @@ from dataclasses import dataclass, field
 from src.type_aliases import HistoryMessage, Metadata
 
 
+@dataclass
 @dataclass
 class ProviderHistory:
  messages: list[HistoryMessage] = field(default_factory=list)
  lock: threading.Lock = field(default_factory=threading.Lock)
 
+ def __bool__(self) -> bool:
+  with self.lock:
+   return bool(self.messages)
+
+ def __len__(self) -> int:
+  with self.lock:
+   return len(self.messages)
+
+ def __iter__(self):
+  with self.lock:
+   return iter(list(self.messages))
+
+ def __getitem__(self, idx):
+  with self.lock:
+   return self.messages[idx]
+
  def append(self, message: HistoryMessage) -> None:
   with self.lock:
    self.messages.append(message)
@@ -54,6 +71,16 @@ _PROVIDER_HISTORIES: dict[str, ProviderHistory] = {
 }
 
 
+_PROVIDER_HISTORIES: dict[str, ProviderHistory] = {
+ "anthropic": ProviderHistory(),
+ "deepseek": ProviderHistory(),
+ "minimax": ProviderHistory(),
+ "qwen": ProviderHistory(),
+ "grok": ProviderHistory(),
+ "llama": ProviderHistory(),
+}
+
+
 def get_history(provider: str) -> ProviderHistory:
  if provider not in _PROVIDER_HISTORIES:
   raise KeyError(f"Unknown provider: {provider!r}")