v0.1.50 — Agent CRUD Management

Added

• CLI: agent create, agent update, agent delete commands for agent
  lifecycle management
• Web: Create, edit, delete agent modals with action buttons in agent
  list
• Backend: agent.create, agent.update, agent.delete,
  agent.defaultWorkspace WebSocket methods
• Auto-resolve default workspace path on agent creation (env →
  config.json → relative fallback)
• Auto-detect and persist workspace root from gateway config on connect

Fixed

• Hardcoded English error messages in agent modals replaced with i18n
  keys
• Escape key not closing agent modals
• Edit agent modal now pre-populates current name and workspace values