Add session persistence system to maintain browser contexts across MCP tool calls:
- SessionManager: Global persistent context management keyed by session ID
- BrowserServerBackend: Modified to use session persistence and reuse contexts
- Context: Enhanced to support environment introspection and session ID override
- MCP Roots: Added educational tool descriptions for workspace-aware automation
- Environment Detection: System file introspection for display/GPU/project detection
Key features:
- Browser contexts survive between tool calls preserving cache, cookies, state
- Complete session isolation between different MCP clients
- Zero startup overhead for repeat connections
- Backward compatible with existing implementations
- Support for MCP roots workspace detection and environment adaptation
Tested and verified with real Claude Code client showing successful session
persistence across navigation calls with preserved browser state.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
