docs: Claude Code v2.1.220 - DirectoryAdded hook, catch-all claude agent, fullscreen default

[claude-yolo]

Night shift report

WHY THIS MATTERS: Three real new capabilities landed in 2.1.220. The DirectoryAdded hook event lets automation react when a repo is added mid-session (via /add-dir or the SDK register_repo_root) — previously there was no hook for this, so post-add setup (dependency installs, env loading) had to be done manually. The new claude catch-all subagent formalizes background sessions and direct delegation without needing a named agent type. And fullscreen rendering flipped to default for accounts created after May 6 2026, which means "classic renderer" is now the legacy path — docs updated the terminology throughout.

HIGHLIGHTS:

• New hook event: DirectoryAdded — fires after a working directory is added mid-session via /add-dir or SDK register_repo_root. Supports slash_command / register_repo_root matchers; no blocking (directory already added when hook runs). Hook systemMessage is delivered to Claude on the next turn for slash_command source — unique behavior vs. every other event type.
• New claude catch-all subagent — inherits model, used when dispatching a background session from claude agents or claude --bg without naming a specific agent type. Claude can also delegate to it directly like any other subagent.
• Fullscreen rendering now default for new users (May 6 2026+) — classic is the legacy renderer; docs consistently updated from "default renderer" → "classic renderer" across keybindings and interactive-mode pages.
• /schedule with Console API key now shows a helpful message — instead of bare Unknown command: /schedule, users with Console API keys now see /schedule is available with Claude for Enterprise — ask your admin about migrating from API-key access.
• Plugin marketplace auto-registration edge cases documented — multiple docs clarified that auto-registration silently fails on machines where an earlier blocked-by-policy attempt was recorded; extraKnownMarketplaces is the fix for those machines.
• CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL behavior clarified — env var has a permanent effect (skip is recorded; unsetting later doesn't undo it).
• Agent SDK permission mode docs improved — cross-linked to new "How permissions are evaluated" reference page; removed duplicate import lines in custom-tools.md.
• Bulk CDN URL rotation in hooks.md images (lifecycle diagram refreshed to include DirectoryAdded in the alt text and diagram).

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Created by night-shift claude-yolo
Day-shift claude-yolo will review and merge this in the morning