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>

changelog/best-practice/claude-commands/changelog.md

@@ -78,3 +78,13 @@
 | # | Priority | Type | Action | Status |
 |---|----------|------|--------|--------|
 | 1 | LOW | Frontmatter Scope | 6 skill-only fields absent from report (intentional scoping) | ❌ INVALID (skill-only fields — same determination as v2.1.74, v2.1.77, and v2.1.78 runs) |
+
+---
+
+## [2026-03-20 08:33 AM PKT] Claude Code v2.1.80
+
+| # | Priority | Type | Action | Status |
+|---|----------|------|--------|--------|
+| 1 | MED | New Field | Add `effort` to frontmatter table — override model effort level when command is invoked (v2.1.80) | ✅ COMPLETE (added as 5th field, then repositioned to 8th when full field set was added) |
+| 2 | HIGH | QA Correction | Add 6 missing fields (`name`, `disable-model-invocation`, `user-invocable`, `context`, `agent`, `hooks`) — official docs state commands support "the same frontmatter" as skills; previous INVALID determinations (v2.1.74–v2.1.79) were incorrect | ✅ COMPLETE (added all 6 fields, count updated 5 → 11, field order matches official docs) |
+| 3 | HIGH | Cross-Report Fix | Add `effort` to skills report (`claude-skills.md`) — field was missing there too | ✅ COMPLETE (added as 8th field in skills report, count updated 10 → 11) |