Feature: Additional AI agent support (Cursor, Windsurf, Continue, Aider)

[erdemtuna]

Source: codeFindings.md Section 6 (Medium Priority)

Only Claude Code and GitHub Copilot are currently detected. The AI agent ecosystem is growing:

• Cursor (~/.cursor/)
• Windsurf (~/.windsurf/ or ~/.codeium/)
• Continue (~/.continue/)
• Aider (uses dotfiles)

The current detection is a simple hardcoded list in internal/agent/ — adding agents is ~5 LOC each. Longer-term, a plugin/config-based approach would be more sustainable.

File: internal/agent/detect.go