Fix excessive whitespace in tool descriptions due to template literal indentation

[daxian-dbw]

Problem

All tool descriptions in src/server.ts contain excessive leading whitespace due to the way template literals are indented in the code. This results in poor formatting when the descriptions are displayed to users through the MCP client.

Current Behavior

Tool descriptions appear with significant left padding. Below is an example of using desktop-commander in AIShell:

Expected Behavior

Tool descriptions should appear clean without excessive indentation.

Root Cause

The template literals in the description fields are using the same indentation as the surrounding code, which includes the whitespace in the final string output.

Solution Options

1. Manual formatting - Start template literals at column 0:

      description: `Get the complete server configuration as JSON. Config includes fields for:
   - blockedCommands (array of blocked shell commands)
   - defaultShell (shell to use for commands)
   ${CMD_PREFIX_DESCRIPTION}`,

2. Use a dedent function - Create or import a utility to strip common leading

   import dedent from 'dedent';
   
   description: dedent`
       Get the complete server configuration as JSON. Config includes fields for:
       - blockedCommands (array of blocked shell commands)
       - defaultShell (shell to use for commands)
       ${CMD_PREFIX_DESCRIPTION}
   `

[wonderwhy-er]

Good suggestion, will take a look at it