Implement workspace-based AI provider for Claude Code integration

[devload]

Description

Implement WorkspaceAIProvider class that communicates with Claude Code via file-based workspace.

Requirements

• Create workspace directory structure (CLAUDE.md, scenarios/, current_state/)
• Generate CLAUDE.md with instructions for Claude Code
• Save screenshots, UI elements, and action history to workspace
• Wait for Claude Code to create response.json
• Parse response and return action decision

Files

• smartmonkey/ai/workspace_provider.py
• smartmonkey/ai/__init__.py

Acceptance Criteria

• Workspace directory created on initialization
• CLAUDE.md generated with test goal and instructions
• Current state files updated on each step
• Response timeout configurable (default 300s)
• Response JSON validated before parsing