feat: add environment variable support for Claude Code token limits

Introduces .env file configuration to manage CLAUDE_CODE_MAX_TOKENS, allowing flexible control of the context window size for AI analysis sessions. This enables users to tune token limits based on their specific penetration testing needs without modifying code.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

shannon.mjs

@@ -2,6 +2,9 @@
 
 import { path, fs } from 'zx';
 import chalk from 'chalk';
+import dotenv from 'dotenv';
+
+dotenv.config();
 
 // Config and Tools
 import { parseConfig, distributeConfig } from './src/config-parser.js';