fix pr review issues

src/.env-sample

@@ -38,5 +38,5 @@ SLACK_VERIFICATION_TOKEN=         # from `Basic Information` page of your Slack
 # Github. Optional.
 # GITHUB_AUTH_TOKEN=                # Authorization token for Github API
 
-# USAGE LIMIT
+# Language model usage limits. Optional.
 # DAILY_TOKEN_LIMIT                 # Daily limit on the number of tokens users can use.

src/sherpa_ai/config/__init__.py

@@ -49,7 +49,7 @@
 LOG_LEVEL = environ.get("LOG_LEVEL", "INFO").upper()
 
 # Usage setting
-DAILY_TOKEN_LIMIT =  float(environ.get("DAILY_TOKEN_LIMIT")) or 20000.00
+DAILY_TOKEN_LIMIT =  float(environ.get("DAILY_TOKEN_LIMIT") or 20000)
 DAILY_LIMIT_REACHED_MESSAGE = (
     environ.get("DAILY_LIMIT_REACHED_MESSAGE")
     or "Sorry for the inconvenience, but it seems that you have exceeded your daily token limit. As a result, you will need to try again after 24 hours. Thank you for your understanding."

src/sherpa_ai/database/user_usage_tracker.py

@@ -44,6 +44,7 @@ def __init__(
         self.max_daily_token = cfg.DAILY_TOKEN_LIMIT
         self.verbose_logger = verbose_logger
         self.is_reminded = False
+        self.usage_percentage_allowed = 75
 
     def download_from_s3(self, bucket_name, s3_file_key, local_file_path):
         file_path = Path("./token_counter.db")
@@ -118,13 +119,13 @@ def remind_user_of_daily_token_limit(self, combined_id):
         self.is_reminded = self.check_if_reminded(combined_id=combined_id)
         if not user_is_whitelisted and not self.is_reminded:
             if (
-                self.percentage_used(combined_id=combined_id) > 75
+                self.percentage_used(combined_id=combined_id) > self.usage_percentage_allowed
                 and not self.is_reminded
             ):
                 self.add_data(combined_id=combined_id, token=0, reminded_timestamp=True)
 
                 self.verbose_logger.log(
-                    "hi friend, you have used up 75% of your daily token limit. once you go over the limit there will be a 24 hour cool down period after which you can continue using Sherpa! be awesome!"
+                    f"Hi friend, you have used up {self.usage_percentage_allowed}% of your daily token limit. once you go over the limit there will be a 24 hour cool down period after which you can continue using Sherpa! be awesome!"
                 )
 
     def get_data_since_last_reset(self, user_id):