ci: add HOL skill-publish validate workflow

.github/workflows/hol-skill-validate.yml

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+name: Validate Skill
+on:
+  push:
+    branches: [main, master]
+  pull_request:
+  workflow_dispatch:
+
+concurrency:
+  group: skill-validate-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+      - name: Validate skill
+        uses: hashgraph-online/skill-publish@8f3c91d7d4cde7b104549e5f0cccdbb4cd7ee58d # v1
+        with:
+          skill-dir: .
+          mode: validate

SKILL.md

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+---
+name: pal-mcp-server
+description: The power of Claude Code / GeminiCLI / CodexCLI + [Gemini / OpenAI / OpenRouter / Azure / Grok / Ollama / Custom Model / All Of The Above] working as one.
+---
+
+# PAL MCP Server
+
+The power of Claude Code / GeminiCLI / CodexCLI + [Gemini / OpenAI / OpenRouter / Azure / Grok / Ollama / Custom Model / All Of The Above] working as one.
+
+## Installation
+
+See https://github.com/BeehiveInnovations/pal-mcp-server for setup instructions.
+
+## Available Tools
+
+See the project README for the complete list of available MCP tools.

skill.json

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+{
+  "name": "pal-mcp-server",
+  "version": "0.1.0",
+  "description": "The power of Claude Code / GeminiCLI / CodexCLI + various AI models working as one.",
+  "author": {
+    "name": "BeehiveInnovations",
+    "url": "https://github.com/BeehiveInnovations"
+  },
+  "homepage": "https://github.com/BeehiveInnovations/pal-mcp-server",
+  "repository": "https://github.com/BeehiveInnovations/pal-mcp-server",
+  "keywords": ["mcp", "codex"],
+  "license": "MIT"
+}