docs(linkedin-thought-leadership): register in marketplace

Add plugin entry to marketplace.json and README.md catalogue.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -24,6 +24,11 @@
       "name": "ultraplan-local",
       "source": "./plugins/ultraplan-local",
       "description": "Deep implementation planning with interview, specialized agent swarms, external research, adversarial review, session decomposition, and headless execution support"
+    },
+    {
+      "name": "linkedin-thought-leadership",
+      "source": "./plugins/linkedin-thought-leadership",
+      "description": "Build LinkedIn thought leadership with algorithmic understanding, strategic consistency, and authentic engagement. Updated for the January 2026 360Brew algorithm change."
     }
   ]
 }

README.md

@@ -98,6 +98,27 @@ Key commands: `/architect`, `/architect:ros`, `/architect:security`, `/architect
 
 ---
 
+### [LinkedIn Thought Leadership](plugins/linkedin-thought-leadership/) `v1.0.0`
+
+Build authentic LinkedIn authority through algorithmic understanding, strategic consistency, and AI-assisted content creation.
+
+Updated for the January 2026 360Brew algorithm change, which validates your creator profile before distributing content. This plugin audits all five criteria and guides you to an optimized profile.
+
+- **360Brew profile optimization** — audit your profile against LinkedIn's creator validation criteria
+- **Full content pipeline** — ideation, drafting, publishing, 48-hour monitoring, and analytics
+- **Content Matrix System** — 40+ post ideas from a single topic using 8 universal angles
+- **Voice training** — learns your authentic writing style and detects drift
+- **Analytics pipeline** — import LinkedIn CSV exports, generate weekly performance reports
+- **Growth strategy** — phase-specific guidance from foundation (0-1K followers) through authority (10K+)
+
+Key commands: `/linkedin:profile`, `/linkedin:setup`, `/linkedin:post`, `/linkedin:quick`, `/linkedin:batch`, `/linkedin:strategy`
+
+16 specialized agents · 25 commands · 6 skills · 9 hooks · 24 reference docs
+
+→ [Full documentation](plugins/linkedin-thought-leadership/README.md)
+
+---
+
 ## Installation
 
 ```bash