Implement Task Complexity Analyzer Tool

[westonbrown]

Description: Build the complexity analysis tool that determines whether a task requires a single agent or multi-agent team formation. This implements the "Analyze Complexity" block in the Core Event Loop.

Acceptance Criteria:

• Pattern matching system for task classification
• Configurable complexity thresholds
• Integration with spawn decision logic
• Support for domain-specific complexity rules
• Performance metrics tracking