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  competitive nit withdrawn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>

plugins/linkedin-studio/commands/onboarding.md

@@ -3,7 +3,7 @@ name: linkedin:onboarding
 description: |
   Multi-step onboarding wizard that guides new users through profile → setup → first-post
   as one cohesive flow. Designed for users who have just installed the plugin and want a
-  single guided path instead of navigating 27 commands on their own.
+  single guided path instead of navigating 29 commands on their own.
   Triggers on: "onboarding", "get started", "new user", "setup wizard", "start from scratch",
   "just installed", "how do I start", "walk me through", "linkedin onboarding".
 allowed-tools:
@@ -214,4 +214,4 @@ First post:       [Published DATE / Pending — run /linkedin:first-post]
 - `/linkedin:batch` — Plan a full week of content in one session
 - `/linkedin:react` — Turn articles and news into posts
 - `/linkedin:strategy` — Growth strategy tailored to your follower level
-- `/linkedin` — See all 27 commands anytime
+- `/linkedin` — See all 29 commands anytime