Fix: Strip whitespace from env vars before validation

Pydantic cannot parse 'true   ' (with trailing spaces) as boolean.
Added field_validator to automatically strip whitespace from all string inputs.

app/core/config.py

@@ -5,6 +5,7 @@ Handles environment variables and application settings
 
 import os
 from typing import List
+from pydantic import field_validator
 from pydantic_settings import BaseSettings
 
 
@@ -77,6 +78,14 @@ class Settings(BaseSettings):
     GITHUB_TOKEN: str = ""
     GITHUB_REPO: str = "ct/bmc_hub"
     
+    @field_validator('*', mode='before')
+    @classmethod
+    def strip_whitespace(cls, v):
+        """Strip leading/trailing whitespace from string values"""
+        if isinstance(v, str):
+            return v.strip()
+        return v
+    
     class Config:
         env_file = ".env"
         case_sensitive = True