0.3.4

• Add a transport-neutral workbench controller and equivalent Vue and Vanilla renderer targets
  with shared Monaco editor and Ghostty terminal leaf adapters.
• Stream safely rendered Markdown in agent chat and replace untyped observations with versioned,
  typed workbench frames, events, and semantic actions.
• Generate actor-private, event-sourced workbench operations from ESS so a hosted product can
  restore panes, open files, cursor state, and diffs without browser-owned persistence.