Add field validation for configuration settings in Settings class

- Introduced a field validator to parse integer values with inline comments for access token expiration, HSTS max age, editor tip max length, and highlights max length.
- Enhanced the configuration management by ensuring cleaner input handling for specific settings.

app/core/config.py

@@ -1,3 +1,4 @@
+from pydantic import field_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
@@ -25,6 +26,20 @@ class Settings(BaseSettings):
 
     model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
 
+    @field_validator(
+        "access_token_expire_minutes",
+        "hsts_max_age",
+        "editor_tip_max_length",
+        "highlights_max_length",
+        mode="before",
+    )
+    @classmethod
+    def _parse_int_with_inline_comment(cls, value):
+        if isinstance(value, str):
+            cleaned = value.split("#", 1)[0].strip()
+            return int(cleaned) if cleaned else value
+        return value
+
     @property
     def is_production(self) -> bool:
         return self.environment.lower() == "production"