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/statistical-analyzer.md

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+---
+name: statistical-analyzer
+display_name: Statistical Analyzer
+description: Run statistical analyses — hypothesis tests, regressions, ANOVA, confidence intervals, and power calculations.
+category: Data & Analytics
+platforms: [claude.ai, claude-code, api]
+version: 1.0.0
+author: Claude Code
+tags: [statistical-analyzer]
+---
+
+# Statistical Analyzer
+
+## Overview
+
+Run statistical analyses — hypothesis tests, regressions, ANOVA, confidence intervals, and power calculations.
+
+## When to Use This Skill
+
+Use **Statistical Analyzer** when you need to:
+
+- Work with statistical analyzer tasks in your project or workflow
+- Automate statistical analyzer operations at scale
+- Generate production-quality statistical analyzer output quickly
+
+## Instructions
+
+When this skill is active, Claude will:
+
+1. Understand the full context of your statistical analyzer request
+2. Apply best practices and conventions for Data & Analytics
+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 statistical analyzer.
+
+**Claude:** I'll walk you through the essential steps for statistical analyzer in your context...
+
+### Example 2 — Advanced Usage
+
+**User:** I need a production-ready statistical analyzer setup with full error handling.
+
+**Claude:** Here's a complete, production-hardened statistical analyzer 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, scipy, statsmodels
+
+## Platforms
+
+Available on: claude.ai, claude-code, api
+
+---
+
+*Part of the [claude-skills](https://github.com/inbharatai/claude-skills) collection — 183+ skills for Claude.*