v0.5.4 — W1 workspace, Context Tree bootstrap, onboarding polish

Highlights

• Ships the W1 workspace-rooted Context Tree flow: workspace.json, .first-tree-workspace state, per-agent source repo clones, first-tree-seed, GitHub repo initialization, and W1-safe tree verify.
• Improves agent-team collaboration with explicit group-chat recipients, tracked human requests, channel-aware command text, clearer async handoffs, and unconditional First Tree / Context Tree reading rules in agent briefings.
• Refreshes onboarding and admin workspace UX across repo connection, Settings Resources, agent Capabilities / Instructions / Usage, Team, chat identity hovercards, and narrow viewport behavior.
• Adds the Claude Code TUI runtime path and improves agent runtime reliability around final responses, usage accounting, session mappings, source checkout fallback, and workspace cleanup retries.
• Aligns CLI upgrade behavior with the server-advertised target version and refreshes the auto-update target before install.

Notable fixes

• Includes bundled skills and CLI README in the published npm tarball.
• Recovers inbox delivery and acknowledgement durability across suspend, redelivery, and delivered-prefix paths.
• Fixes WebSocket auth handshake classification, client presence close grace, and several onboarding access guards.
• Recovers document previews from message metadata when the snapshot cache is gone.
• Fixes web interaction issues around select options in modals, prompt editing, tab overflow, button text colors, and mention/request rendering.

Compatibility notes

• Legacy GitHub Scan and pre-W1 Context Tree initialization paths are retired.
• Existing clients migrate workspace state forward through one-shot cleanup paths; no manual migration is expected for normal npm users.