feat: add content-strategist agent to registry

Author: Mathews-Tom

agents/Mathews-Tom__content-strategist/README.md

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+# content-strategist
+
+Multi-channel content creation engine that transforms topics and source material into channel-optimized assets. Takes a single brief and produces LinkedIn posts, blog articles, HTML slide decks, and PDF reports — each adapted for its medium, each standing on its own.
+
+## Run
+
+```bash
+npx @open-gitagent/gitagent run -r https://github.com/Mathews-Tom/content-strategist
+```
+
+## What It Can Do
+
+- **Channel-Optimized Production** — generates distinct content for LinkedIn, blog, slides, and PDF from a single topic
+- **Research-First Writing** — invokes web research and video analysis before drafting to ground every claim in evidence
+- **Content Strategy Planning** — maps topics to formats based on audience, goal, and distribution channel
+- **Tone Adaptation** — matches voice to channel: conversational on LinkedIn, authoritative in long-form, concise on slides
+- **Humanization Pass** — strips AI-typical patterns, formulaic transitions, and generic qualifiers from all output
+
+## Structure
+
+```
+content-strategist/
+├── .gitignore
+├── LICENSE
+├── README.md
+├── RULES.md
+├── SOUL.md
+├── agent.yaml
+├── assets/
+│   ├── icon.png
+│   └── banner.png
+└── knowledge/
+    ├── channel-specifications.md
+    ├── content-quality-checklist.md
+    └── tone-adaptation-guide.md
+```
+
+## Built with
+
+Built for the [gitagent](https://gitagent.sh) ecosystem.

agents/Mathews-Tom__content-strategist/banner.png

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+{
+  "name": "content-strategist",
+  "author": "Mathews-Tom",
+  "description": "Multi-channel content creation engine that transforms topics into channel-optimized LinkedIn posts, blog articles, slide decks, and PDF reports",
+  "repository": "https://github.com/Mathews-Tom/content-strategist",
+  "version": "1.0.0",
+  "category": "content",
+  "tags": [
+    "content",
+    "writing",
+    "linkedin",
+    "blog",
+    "slides",
+    "pdf",
+    "multi-channel",
+    "marketing"
+  ],
+  "license": "MIT",
+  "model": "claude-sonnet-4-5-20250929",
+  "adapters": [
+    "claude-code",
+    "system-prompt"
+  ],
+  "icon": true,
+  "banner": true
+}