sync all reports to Claude Code v2.1.80 — fix frontmatter field coverage across commands, skills, and subagents

- Commands: 4→11 frontmatter fields (QA correction — official docs confirm commands support same frontmatter as skills, reversing 5 runs of incorrect "skill-only" INVALID status)
- Skills: 10→11 fields (added effort)
- Subagents: 14→15 fields (added effort)
- Settings: added channelsEnabled managed setting
- Concepts: added Channels row, Git Worktrees deep link, Plugins marketplace link
- Development workflows: star/count updates, table reorder
- CLAUDE.md: added effort to subagent definition
- README: v2.1.80 badge, added Kenneth to follows

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -68,6 +68,7 @@ Subagents in `.claude/agents/*.md` use YAML frontmatter:
 - `hooks`: Lifecycle hooks scoped to this subagent (all hook events are supported; `PreToolUse`, `PostToolUse`, and `Stop` are the most common)
 - `memory`: Persistent memory scope — `user`, `project`, or `local` (see `reports/claude-agent-memory.md`)
 - `background`: Set to `true` to always run as a background task
+- `effort`: Effort level override: `low`, `medium`, `high`, `max` (default: inherits from session)
 - `isolation`: Set to `"worktree"` to run in a temporary git worktree
 - `color`: CLI output color for visual distinction