docs: sync to Claude Code v2.1.143 (5 patches since v2.1.138)

Bumps tutorial coverage from v2.1.138 → v2.1.143. Highlights:

- /goal and /scroll-speed slash commands (v2.1.139)
- claude agents Agent View (Research Preview) with 9 dispatch flags
- claude plugin details and marketplace context-cost projection
- Hook exec form (args), continueOnBlock on PostToolUse, terminalSequence
- Stop hook 8-block safety cap + override env var
- Fast Mode default flipped to Opus 4.7 (v2.1.142)
- PowerShell tool default-on for Bedrock/Vertex/Foundry on Windows
- API-key auth disables Remote Control, /schedule, claude.ai MCP, notifications
- worktree.bgIsolation setting
- CLAUDE_PROJECT_DIR for MCP stdio servers
- Subagent OTEL headers + case-insensitive subagent_type matching
- Root-level SKILL.md plugin pattern; Routines marketing name note

Also bumps stale "28 hook events" counts in CATALOG/README to 29 and
refreshes the metadata footer (Last Updated, Claude Code Version,
Sources) on every modified file.

README.md

@@ -482,7 +482,7 @@ Configure hooks in `~/.claude/settings.json`:
 
 **Usage**: Hooks execute automatically on events
 
-**Hook Types** (5 types, 28 events):
+**Hook Types** (5 types, 29 events):
 - **Tool Hooks**: `PreToolUse`, `PostToolUse`, `PostToolUseFailure`, `PermissionRequest`
 - **Session Hooks**: `SessionStart`, `SessionEnd`, `Stop`, `StopFailure`, `SubagentStart`, `SubagentStop`
 - **Task Hooks**: `UserPromptSubmit`, `TaskCompleted`, `TaskCreated`, `TeammateIdle`
@@ -871,12 +871,13 @@ MIT License - see [LICENSE](LICENSE). Free to use, modify, and distribute. The o
 
 ---
 
-**Last Updated**: May 9, 2026
-**Claude Code Version**: 2.1.138
+**Last Updated**: May 19, 2026
+**Claude Code Version**: 2.1.143
 **Sources**:
 - https://code.claude.com/docs/en/overview
 - https://code.claude.com/docs/en/changelog
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.131
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.138
+- https://github.com/anthropics/claude-code/releases/tag/v2.1.143
 - https://github.com/anthropics/claude-code/releases/tag/v2.1.113
 **Compatible Models**: Claude Sonnet 4.6, Claude Opus 4.7, Claude Haiku 4.5