chore: fix typo and simplified exceptions

Author: dsdanielpark

gemini/async_core.py renamed to gemini/src/async_core.py

@@ -1,22 +1,16 @@
-class AuthError(Exception):
+class PackageError(Exception):
     """Invalid credentials/cookies."""
 
     pass
 
 
-class APIError(Exception):
-    """Package-level error."""
-
-    pass
-
-
-class GeminiError(Exception):
+class GeminiAPIError(Exception):
     """Unhandled server error."""
 
     pass
 
 
-class TimeoutError(GeminiError):
+class TimeoutError(GeminiAPIError):
     """Request timeout."""
 
     pass

gemini/src/model/exceptions.py

@@ -23,7 +23,7 @@ class GeminiModelOutput(BaseModel):
 
     @property
     def rcid(self) -> str:
-        """The RCID (Reversed-Cloze ID) of the chosen candidate."""
+        """The RCID (Response Choice ID) of the chosen candidate."""
         return self.candidates[self.chosen].rcid
 
     @property