Atrium v0.9.4 — Worktree Lifecycle

Full worktree lifecycle management: create, remove, and prune git worktrees directly from the UI — the first human-initiated git writes in Atrium.

Added

• Create worktree — new branch (off any base) or check out an existing branch; path auto-derived and editable
• Remove worktree — two-gate confirm: warns about homed panes, surfaces git's --force gate if dirty
• Prune orphaned worktrees — one-click git worktree prune from the Inventory header
• Spawn any pane kind into a worktree — ＋▾ caret per worktree in both the Sidebar and Inventory tab
• Per-project Sidebar view memory — Groups/Worktrees toggle persists across restarts
• ErrorBoundary — render crashes show a recoverable panel instead of a blank screen
• Inventory tab redesign — single Add ▾ per row, kebab Remove, search/sort/filter controls

Changed

• Group-colored orbs: glow tightened ~25%; violet orb brightness raised to match the blue

Removed

• .mcp.json auto-writer backed out entirely — will return as an explicit opt-in when the Pro edition ships