Adds a new plugin enabling AI agents to leverage reusable skills following the Agent Skills specification.

New Plugin: BotSharp.Plugin.AgentSkills

Core Components

• SkillLoader/SkillParser - Discovers and parses SKILL.md files with YAML frontmatter from user (~/.botsharp/skills/) and project-level directories
• SkillValidator - Validates skill names (lowercase alphanumeric + hyphens, max 64 chars), descriptions, and file sizes

Agent Functions

• skill-read_skill - Read full SKILL.md content for a skill
• skill-read_skill_file - Read files within a skill directory
• skill-list_skill_directory - List skill directory contents

Security

• Path traversal protection via ResolveSafePath
• Symlink validation for external targets
• File size limits (10 MB) and output truncation

Usage

Create skills in ~/.botsharp/skills/{skill-name}/SKILL.md:

---
name: web-research
description: Performs web research and summarizes findings
license: MIT
allowed-tools: http_* search_*
---

# Web Research Skill

Instructions for the agent...

Configure via AgentSkillsSettings:

{
  "AgentSkills": {
    "EnableUserSkills": true,
    "EnableProjectSkills": true,
    "SkillsCacheDurationSeconds": 300
  }
}

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