feat: add social-publisher skill via SocialClaw

skills/social-publisher/SKILL.md

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+---
+name: social-publisher
+description: >
+  Schedule and publish social media posts across 13 platforms (X, LinkedIn, Instagram,
+  Facebook Pages, TikTok, Discord, Telegram, YouTube, Reddit, WordPress, Pinterest) via
+  the SocialClaw API. Use this skill when you need to announce a launch, share product
+  updates, run a content campaign, or build social presence for your startup — from a
+  single workspace API key, no per-platform OAuth required.
+---
+
+# Social Publisher
+
+Publish and schedule social media posts for your startup across 13 platforms using [SocialClaw](https://getsocialclaw.com). One API key covers everything.
+
+## Why this skill exists
+
+Startups need social presence but setting up 13 separate platform integrations is painful. SocialClaw solves the auth problem with a single workspace key, while this skill teaches Claude how to orchestrate campaigns, schedule posts, and pull analytics — all from your terminal.
+
+## Supported Platforms
+
+- X (Twitter)
+- LinkedIn (Profile + Page)
+- Instagram (Business + Standalone)
+- Facebook Pages
+- TikTok
+- Discord
+- Telegram
+- YouTube
+- Reddit
+- WordPress
+- Pinterest
+
+## Setup
+
+```bash
+# Install skill
+npx skills add ndesv21/socialclaw
+
+# Set your SocialClaw workspace API key
+export SOCIALCLAW_API_KEY=your_api_key_here
+```
+
+Get your API key at [getsocialclaw.com](https://getsocialclaw.com).
+
+## Workflow
+
+### Phase 1: Define Your Campaign
+
+Tell Claude which platforms, what message, and when to post. Claude will draft
+platform-optimized copy for each channel (character limits, hashtag norms, etc.).
+
+### Phase 2: Upload Media (Optional)
+
+Upload images or videos once — SocialClaw stores them for reuse across platforms.
+
+### Phase 3: Validate & Schedule
+
+Claude validates timing rules and platform constraints before confirming the schedule.
+
+### Phase 4: Monitor & Iterate
+
+Pull post-level analytics after publishing to see what's resonating.
+
+## Trigger Phrases
+
+This skill activates when you say things like:
+- "Post our launch announcement to Twitter and LinkedIn"
+- "Schedule a product update across all social channels"
+- "Create a 5-day launch campaign for [feature]"
+- "Publish to Discord and Telegram at 9am"
+
+## Example Usage
+
+```
+We're launching our beta tomorrow. Write and schedule posts for X, LinkedIn,
+and our Discord community. Message: "Our beta is live! Sign up at example.com
+— 100 spots available. #startup #launch"
+```
+
+Claude will:
+1. Draft platform-appropriate versions of the message
+2. Validate the schedule against platform rate limits
+3. Queue the posts via SocialClaw
+4. Confirm delivery and return post URLs
+
+## Source
+
+- GitHub: [ndesv21/socialclaw](https://github.com/ndesv21/socialclaw)
+- Website: [getsocialclaw.com](https://getsocialclaw.com)