refactor: Remove deprecated files and clean up codebase

This commit deletes obsolete files related to the Basecamp MCP integration, including:
- `basecamp_client.py`
- `basecamp_oauth.py`
- `composio_client_example.py`
- `composio_integration.py`
- `mcp_integration.py`
- `setup.sh`
- `start_basecamp_mcp.sh`

Additionally, a new file `mcp_server_cli.py` is introduced to streamline the MCP server functionality. The README has been updated to reflect these changes and provide clearer setup instructions.

This cleanup aims to enhance maintainability and focus on the core components of the integration.

token_storage.py

@@ -10,21 +10,31 @@ import os
 import json
 import threading
 from datetime import datetime, timedelta
+import logging
 
-# Token storage file - in production, use a database instead
-TOKEN_FILE = 'oauth_tokens.json'
+# Determine the directory where this script (token_storage.py) is located
+SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
+# Define TOKEN_FILE as an absolute path within that directory
+TOKEN_FILE = os.path.join(SCRIPT_DIR, 'oauth_tokens.json')
 
 # Lock for thread-safe operations
 _lock = threading.Lock()
+_logger = logging.getLogger(__name__)
 
 def _read_tokens():
     """Read tokens from storage."""
     try:
         with open(TOKEN_FILE, 'r') as f:
-            return json.load(f)
+            data = json.load(f)
+            basecamp_data = data.get('basecamp', {})
+            updated_at = basecamp_data.get('updated_at')
+            _logger.info(f"Read tokens from {TOKEN_FILE}. Basecamp token updated_at: {updated_at}")
+            return data
     except FileNotFoundError:
+        _logger.info(f"{TOKEN_FILE} not found. Returning empty tokens.")
         return {}  # Return empty dict if file doesn't exist
     except json.JSONDecodeError:
+        _logger.warning(f"Error decoding JSON from {TOKEN_FILE}. Returning empty tokens.")
         # If file exists but isn't valid JSON, return empty dict
         return {}
 
@@ -33,6 +43,10 @@ def _write_tokens(tokens):
     # Create directory for the token file if it doesn't exist
     os.makedirs(os.path.dirname(TOKEN_FILE) if os.path.dirname(TOKEN_FILE) else '.', exist_ok=True)
     
+    basecamp_data_to_write = tokens.get('basecamp', {})
+    updated_at_to_write = basecamp_data_to_write.get('updated_at')
+    _logger.info(f"Writing tokens to {TOKEN_FILE}. Basecamp token updated_at to be written: {updated_at_to_write}")
+
     # Set secure permissions on the file
     with open(TOKEN_FILE, 'w') as f:
         json.dump(tokens, f, indent=2)