WIP: Can play with bots using old frontend, and multi_bot_launcher

This is a very fragile first pass. There are no messages sent, and
sometimes the bots die without warning. But, you'll get a few good turns
in before they do and during that time, it's truly glorious.

bot_client/config.py

@@ -1,7 +1,52 @@
+from os.path import exists
 from pydantic_settings import BaseSettings
 from pathlib import Path
+import warnings
 
 
 class Configuration(BaseSettings):
     DEBUG: bool = False
-    log_file_path: Path = Path("./logs/")
+    log_file_path: Path = Path("./logs/logs.txt")
+    DEEPSEEK_API_KEY: str | None = None
+    OPENAI_API_KEY: str | None = None
+    ANTHROPIC_API_KEY: str | None = None
+    GEMINI_API_KEY: str | None = None
+    OPENROUTER_API_KEY: str | None = None
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+
+        # Make the path absolute, gets rid of weirdness of calling this in different places
+        self.log_file_path = self.log_file_path.resolve()
+        self.log_file_path.parent.mkdir(parents=True, exist_ok=True)
+        self.log_file_path.touch(exist_ok=True)
+
+        self._validate_api_keys()
+
+    def _validate_api_keys(self):
+        """Validate API keys at startup and issue warnings for missing keys"""
+        api_keys = [
+            "DEEPSEEK_API_KEY",
+            "OPENAI_API_KEY",
+            "ANTHROPIC_API_KEY",
+            "GEMINI_API_KEY",
+            "OPENROUTER_API_KEY",
+        ]
+
+        for key in api_keys:
+            value = super().__getattribute__(key)
+            if not value or (isinstance(value, str) and len(value) == 0):
+                warnings.warn(f"API key '{key}' is not set or is empty", UserWarning)
+
+    def __getattribute__(self, name):
+        """Override to check for empty API keys at access time"""
+        value = super().__getattribute__(name)
+
+        if name.endswith("_KEY") and (
+            not value or (isinstance(value, str) and len(value) == 0)
+        ):
+            raise ValueError(
+                f"API key '{name}' is not set or is empty. Please configure it before use."
+            )
+
+        return value