Implement runtime agent loop and container hygiene

app/config.py

@@ -1,5 +1,6 @@
 """Configuration management using pydantic-settings."""
 
+from pydantic import field_validator
 from pydantic_settings import BaseSettings
 from typing import Optional
 
@@ -12,6 +13,30 @@ class Settings(BaseSettings):
     APP_ENV: str = "development"
     DEBUG: bool = False
 
+    @field_validator("DEBUG", mode="before")
+    @classmethod
+    def parse_debug(cls, value: object) -> bool:
+        """Parse permissive runtime DEBUG values from shell environments."""
+        if isinstance(value, bool):
+            return value
+        if isinstance(value, str):
+            normalized = value.strip().lower()
+            if normalized in {"1", "true", "t", "yes", "y", "on", "debug"}:
+                return True
+            if normalized in {
+                "0",
+                "false",
+                "f",
+                "no",
+                "n",
+                "off",
+                "release",
+                "prod",
+                "production",
+            }:
+                return False
+        return False
+
     # Database
     DATABASE_URL: str = "postgresql+asyncpg://sanctum:password@localhost:5432/sanctum"
 
@@ -27,6 +52,9 @@ class Settings(BaseSettings):
     LLM_API_KEY: Optional[str] = None
     LLM_MODEL: str = "gpt-3.5-turbo"
 
+    # Agent loop
+    AGENT_LOOP_INTERVAL_SECONDS: float = 60.0
+
     # Export
     EXPORT_PATH: str = "exports"