chore: Release v2.8.0

Major feature release with enhanced code analysis and documentation.

Features:
- C3.9: Project documentation extraction
- Granular AI enhancement control (--enhance-level 0-3)
- C# language support for test extraction
- 6-12x faster parallel LOCAL mode AI enhancement
- Auto-enhancement and LOCAL mode fallbacks
- GLM-4.7 and custom Claude-compatible API support

Bug Fixes:
- Fixed C# test extraction language errors
- Fixed config type field mismatch
- Fixed LocalSkillEnhancer import issues
- Fixed critical linter errors

Contributors:
- @xuintl - Chinese README improvements
- @Zhichang Yu - GLM-4.7 support and PDF fixes
- @YusufKaraaslanSpyke - Core features and maintenance

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

CLAUDE.md

@@ -6,7 +6,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 **Skill Seekers** is a Python tool that converts documentation websites, GitHub repositories, and PDFs into LLM skills. It supports 4 platforms: Claude AI, Google Gemini, OpenAI ChatGPT, and Generic Markdown.
 
-**Current Version:** v2.8.0-dev
+**Current Version:** v2.8.0
 **Python Version:** 3.10+ required
 **Status:** Production-ready, published on PyPI
 **Website:** https://skillseekersweb.com/ - Browse configs, share, and access documentation
@@ -924,7 +924,7 @@ The `scripts/` directory contains utility scripts:
 
 ## 🎉 Recent Achievements
 
-**v2.8.0-dev (Current Development):**
+**v2.8.0 (February 1, 2026):**
 - Active development on next release
 
 **v2.7.1 (January 18, 2026 - Hotfix):**