chore(linkedin-studio): re-baseline 4.1.0 → 0.4.0 (honest pre-1.0 maturity)

Reset version declarations to v0.4.0 across plugin.json, README badge + version-history, CLAUDE.md header, and the root marketplace README entry. The 1.0.0–4.1.0 numbering reflected ambition, not maturity: user data still lives inside the plugin tree (.gitignore-defended), no command has passed the hardening quality-gate, command testing is incomplete, and there is no GUI. A deliberate marketplace downgrade (existing installs will not auto-pull a lower number). Path to v1.0.0 = architecture (M0 per-user data-dir migration) + hardening + command testing + GUI. No functionality changed — only version declarations; all prior changelog/history preserved. Lint green (Passed 74 / Failed 0).

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

plugins/linkedin-studio/.claude-plugin/plugin.json

@@ -1,6 +1,6 @@
 {
   "name": "linkedin-studio",
-  "version": "4.1.0",
+  "version": "0.4.0",
   "description": "LinkedIn Studio — full-spectrum LinkedIn content engine: feed posts, carousels, video scripts, and long-form newsletter editions, with the 2026 relevance-ranking model baked in. v4.0.0 is an audit-remediation release (Voyage Phase 0–3): every user-facing claim is made honest or removed, all 11 previously-orphaned agents are wired (→ 19 agents), a `/linkedin:firsthour` post-publish command is added (→ 27 commands), the algorithm-signal claims are reconciled to one sourced statement (no unpublishable model name or date), short-form de-AI and video quality gates are added, and the structure lint is rebuilt to guard the real layout plus version/count/stat consistency. Breaking: the newly-wired agents register only on reinstall/reload, and this consolidates the v3.0.0 identity break (slug, agent namespace `linkedin-studio:<agent>`, state-file path `~/.claude/linkedin-studio.local.md`). v3.1.0 added the cold adversarial review package (`/linkedin:headless-review` + Step 6.5 + `/linkedin:pivot` + per-artifact personas); the `/linkedin:*` commands are unchanged. v4.1.0 adds a journey layer: two guided front-doors (`/linkedin:create`, `/linkedin:measure`) plus a router re-tiered into five journeys (Start · Create · Engage · Measure · Grow), with the 27 existing commands kept as the execution tier (→ 29 commands; additive, reload registers the two new commands).",
   "author": {
     "name": "Kjell Tore Guttormsen"