feat: add 188+ agent skills (.agents/) and update project guidelines

- Add 188+ AI agent skill files across 11 categories (Development, DevOps, Security, Data, Design, Writing, Integrations, Documents & Media, Education)
- Update CLAUDE.md with new CI/CD Builder skill reference
- Update AGENTS.md with complete skill index organized by category
- Update .cursorrules configuration file
- Add .gitea/ workflows directory

.agents/claude-api.md

@@ -0,0 +1,67 @@
+---
+name: claude-api
+display_name: Claude API
+description: Build apps with the Anthropic Claude API — chat completions, tool use, streaming, vision, and multi-turn conversations.
+category: Development
+platforms: [claude.ai, claude-code, api]
+version: 1.0.0
+author: Claude Code
+tags: [claude-api]
+---
+
+# Claude API
+
+## Overview
+
+Build apps with the Anthropic Claude API — chat completions, tool use, streaming, vision, and multi-turn conversations.
+
+## When to Use This Skill
+
+Use **Claude API** when you need to:
+
+- Work with claude api tasks in your project or workflow
+- Automate claude api operations at scale
+- Generate production-quality claude api output quickly
+
+## Instructions
+
+When this skill is active, Claude will:
+
+1. Understand the full context of your claude api request
+2. Apply best practices and conventions for Development
+3. Produce clean, well-structured, production-ready output
+4. Explain key decisions and offer alternatives where relevant
+
+## Examples
+
+### Example 1 — Basic Usage
+
+**User:** Help me get started with claude api.
+
+**Claude:** I'll walk you through the essential steps for claude api in your context...
+
+### Example 2 — Advanced Usage
+
+**User:** I need a production-ready claude api setup with full error handling.
+
+**Claude:** Here's a complete, production-hardened claude api implementation...
+
+## Guidelines
+
+- Always validate inputs before processing
+- Follow the conventions of the target platform or language
+- Prefer explicit over implicit — clarity beats cleverness
+- Include comments for non-obvious logic
+- Suggest tests or validation steps where appropriate
+
+## Dependencies
+
+Required: python, typescript, anthropic-sdk
+
+## Platforms
+
+Available on: claude.ai, claude-code, api
+
+---
+
+*Part of the [claude-skills](https://github.com/inbharatai/claude-skills) collection — 183+ skills for Claude.*