feat(linkedin-studio): S14 — journey layer (create/measure front-doors + 5-journey router), v4.1.0

14a's cold command-rationalization found ZERO redundancy across the 27 commands
(no defensible merge/cut), so the operator reframed S14 from "merge/cut" to
"add a journey layer over the kept atomics".

- Add /linkedin:create + /linkedin:measure — delegate-only guided front-doors
  (Read/Glob/AskUserQuestion only; route to the command that owns the work)
- Re-tier commands/linkedin.md into 5 journeys (Start/Create/Engage/Measure/Grow);
  onboarding/strategy elevated as Start/Grow front-doors; Engage = calendar+firsthour tier
- 14a honesty nits: router now lists firsthour; calendar cross-links to firsthour;
  competitive confirmed UNGATED (the claimed 1K-gating inconsistency was unfounded)
- Lockstep: EXPECT_COMMANDS 27->29, v4.0.0->4.1.0 across plugin.json / README badges /
  plugin+root CLAUDE.md / README / CHANGELOG; new README commands-badge lint guard
- 14a deliverable corrected: multiplatform entry added (26/27 -> 27/27), header counts,
  competitive nit withdrawn
- Independent /trekreview (2 Opus reviewers) raised 3 MAJORs (stale commands badge,
  router competitive self-contradiction, STATE.md count) — ALL remediated in-session;
  verdict ALLOW

Gate: test-runner.sh 74/0/0; node --test 98/98; commands=29; v4.1.0 consistent.
Additive/minor — no command removed/renamed/behavior-changed; reload registers create+measure.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -114,7 +114,7 @@ Key commands: `/architect`, `/architect:ros`, `/architect:security`, `/architect
 
 ---
 
-### [LinkedIn Studio](plugins/linkedin-studio/) `v4.0.0`
+### [LinkedIn Studio](plugins/linkedin-studio/) `v4.1.0`
 
 Build authentic LinkedIn authority through algorithmic understanding, strategic consistency, and AI-assisted content creation.
 
@@ -123,9 +123,9 @@ Build authentic LinkedIn authority through algorithmic understanding, strategic
 - **Content engine** — Content Matrix (40+ ideas from one topic), voice training with drift detection, full ideation → publish → 48-hour monitoring → analytics
 - **Growth and monetization** — phase-specific guidance from 0 to 10K+ followers; topic-relevance profile optimization aligned to LinkedIn's 2026 ranking model
 
-Key commands: `/linkedin:onboarding`, `/linkedin:post`, `/linkedin:quick`, `/linkedin:newsletter`, `/linkedin:carousel`, `/linkedin:report`
+Key commands: `/linkedin:create` + `/linkedin:measure` (journey front-doors), `/linkedin:onboarding`, `/linkedin:post`, `/linkedin:newsletter`, `/linkedin:report`
 
-19 agents · 27 commands · 6 skills · 9 hooks · [Full documentation →](plugins/linkedin-studio/README.md)
+19 agents · 29 commands (five journeys) · 6 skills · 9 hooks · [Full documentation →](plugins/linkedin-studio/README.md)
 
 ---