Add new skill for finding and recovering content from Claude Code session history files (.claude/projects/). Features: - Search sessions by keywords across project history - Recover deleted files from Write tool calls - Analyze session statistics and tool usage - Track file evolution across multiple sessions Best practice improvements applied: - Third-person description in frontmatter - Imperative writing style throughout - Progressive disclosure (workflows in references/) - No content duplication between SKILL.md and references - Proper exception handling in scripts - Documented magic numbers Marketplace integration: - Updated marketplace.json (v1.13.0, 20 plugins) - Updated README.md badges, skill section, use cases - Updated README.zh-CN.md with Chinese translations - Updated CLAUDE.md skill count and available skills list - Updated CHANGELOG.md with v1.13.0 entry 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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Changelog
All notable changes to this project will be documented in this file.
The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.
Unreleased
Added
- None
Changed
- None
Deprecated
- None
Removed
- None
Fixed
- None
Security
- None
[1.13.0] - 2025-12-09
Added
-
New Skill: claude-code-history-files-finder - Session history recovery for Claude Code
- Search sessions by keywords with frequency ranking
- Recover deleted files from Write tool calls with automatic deduplication
- Analyze session statistics (message counts, tool usage, file operations)
- Batch operations for processing multiple sessions
- Streaming processing for large session files (>100MB)
- Bundled scripts: analyze_sessions.py, recover_content.py
- Bundled references: session_file_format.md, workflow_examples.md
- Follows Anthropic skill authoring best practices (third-person description, imperative style, progressive disclosure)
-
New Skill: docs-cleaner - Documentation consolidation
- Consolidate redundant documentation while preserving valuable content
- Redundancy detection for overlapping documents
- Smart merging with structure preservation
- Validation for consolidated documents
Changed
- Updated marketplace skills count from 18 to 20
- Updated marketplace version from 1.11.0 to 1.13.0
- Updated README.md badges (skills count: 20, version: 1.13.0)
- Updated README.md to include claude-code-history-files-finder in skills listing (skill 18)
- Updated README.md to include docs-cleaner in skills listing (skill 19)
- Updated README.zh-CN.md badges (skills count: 20, version: 1.13.0)
- Updated README.zh-CN.md to include both new skills with Chinese translations
- Updated CLAUDE.md skills count from 18 to 20
- Added session history recovery use case section to README.md
- Added documentation maintenance use case section to README.md
- Added corresponding use case sections to README.zh-CN.md
- Added installation commands for both new skills
- Added quick links for documentation references
[youtube-downloader-1.1.0] - 2025-11-19
Changed
- youtube-downloader v1.0.0 → v1.1.0: Enhanced with HLS streaming support
- Added comprehensive HLS stream download support (m3u8 format)
- Added support for platforms like Mux, Vimeo, and other HLS-based services
- Added ffmpeg-based download workflow with authentication headers
- Added Referer header configuration for protected streams
- Added protocol whitelisting guidance
- Added separate audio/video stream handling and merging workflow
- Added troubleshooting for 403 Forbidden errors
- Added troubleshooting for yt-dlp stuck on cookie extraction
- Added troubleshooting for expired signatures
- Added performance tips (10-15x realtime speed)
- Updated skill description to include HLS streams and authentication
- Updated "When to Use" triggers to include m3u8/HLS downloads
- Updated Overview to mention multiple streaming platforms
[1.11.0] - 2025-11-16
Added
- New Skill: prompt-optimizer - Transform vague prompts into precise EARS specifications
- EARS (Easy Approach to Requirements Syntax) transformation methodology
- 6-step optimization workflow: analyze, transform, identify theories, extract examples, enhance, present
- 5 EARS sentence patterns (ubiquitous, event-driven, state-driven, conditional, unwanted behavior)
- Domain theory grounding with 10+ categories (productivity, UX, gamification, learning, e-commerce, security)
- 40+ industry frameworks mapped to use cases (GTD, BJ Fogg, Gestalt, AIDA, Zero Trust, etc.)
- Role/Skills/Workflows/Examples/Formats prompt enhancement framework
- Advanced optimization techniques (multi-stakeholder, non-functional requirements, complex logic)
- Bundled references: ears_syntax.md, domain_theories.md, examples.md
- Complete transformation examples (procrastination app, e-commerce, learning platform, password reset)
- Progressive disclosure pattern (metadata → SKILL.md → bundled resources)
Changed
- Updated marketplace skills count from 17 to 18
- Updated marketplace version from 1.10.0 to 1.11.0
- Updated README.md badges (skills count, version)
- Updated README.md to include prompt-optimizer in skills listing
- Updated README.zh-CN.md badges (skills count, version)
- Updated README.zh-CN.md to include prompt-optimizer in skills listing
- Updated CLAUDE.md skills count from 17 to 18
- Added prompt-optimizer use case section to README.md
- Added prompt-optimizer use case section to README.zh-CN.md
- Enhanced marketplace metadata description to include prompt optimization capability
- prompt-optimizer v1.1.0: Improved skill following Anthropic best practices
- Reduced SKILL.md from 369 to 195 lines (47% reduction) using progressive disclosure
- Added new reference: advanced_techniques.md (325 lines) for multi-stakeholder, non-functional, and complex logic patterns
- Added 4th complete example (password reset security) to examples.md
- Added attribution to 阿星AI工作室 (A-Xing AI Studio) for EARS methodology inspiration
- Enhanced reference loading guidance with specific triggers for each file
- Improved conciseness and clarity following skill authoring best practices
1.10.0 - 2025-11-10
Added
- New Skill: qa-expert - Comprehensive QA testing infrastructure with autonomous LLM execution
- One-command QA project initialization with complete templates and tracking CSVs
- Google Testing Standards implementation (AAA pattern, 90% coverage targets)
- Autonomous LLM-driven test execution via master prompts (100x speed improvement)
- OWASP Top 10 security testing framework (90% coverage target)
- Bug tracking with P0-P4 severity classification
- Quality gates enforcement (100% execution, ≥80% pass rate, 0 P0 bugs, ≥80% code coverage)
- Ground Truth Principle for preventing doc/CSV sync issues
- Day 1 onboarding guide for new QA engineers (5-hour timeline)
- Bundled scripts:
init_qa_project.py,calculate_metrics.py - Bundled references: master_qa_prompt.md, google_testing_standards.md, day1_onboarding.md, ground_truth_principle.md, llm_prompts_library.md
- Complete test case and bug tracking templates
- 30+ ready-to-use LLM prompts for QA tasks
- Progressive disclosure pattern (metadata → SKILL.md → bundled resources)
Changed
- Updated marketplace skills count from 16 to 17
- Updated marketplace version from 1.9.0 to 1.10.0
- Updated README.md badges (skills count, version)
- Updated README.md to include qa-expert in skills listing
- Updated CLAUDE.md skills count from 16 to 17
- Added qa-expert use case section to README.md
- Enhanced marketplace metadata description to include QA testing capability
1.9.0 - 2025-10-29
Added
- New Skill: video-comparer - Video comparison and quality analysis tool
- Compare original and compressed videos with interactive HTML reports
- Calculate quality metrics (PSNR, SSIM) for compression analysis
- Generate frame-by-frame visual comparisons with three viewing modes (slider, side-by-side, grid)
- Extract video metadata (codec, resolution, bitrate, duration, file size)
- Multi-platform FFmpeg installation instructions (macOS, Linux, Windows)
- Bundled Python script:
compare.pywith security features (path validation, resource limits) - Comprehensive reference documentation (video metrics interpretation, FFmpeg commands, configuration)
- Self-contained HTML output with embedded frames (no server required)
Changed
- Updated marketplace skills count from 15 to 16
- Updated marketplace version from 1.8.0 to 1.9.0
- Updated README.md badges (skills count, version)
- Updated README.md to include video-comparer in skills listing
- Updated CLAUDE.md skills count from 15 to 16
- Added video-comparer use case section to README.md
- Added FFmpeg to requirements section
1.6.0 - 2025-10-26
Added
- New Skill: youtube-downloader - YouTube video and audio downloading with yt-dlp
- Download YouTube videos and playlists with robust error handling
- Audio-only download with MP3 conversion
- Android client workaround for nsig extraction issues (automatic)
- Format listing and custom format selection
- Network error handling for proxy/restricted environments
- Bundled Python script:
download_video.pywith yt-dlp availability check - Comprehensive troubleshooting documentation for common yt-dlp issues
- Demo tape file and GIF showing download workflow
Changed
- Updated marketplace.json from 12 to 13 skills
- Updated marketplace version from 1.5.0 to 1.6.0
- Enhanced marketplace metadata description to include YouTube downloading capability
- Updated CLAUDE.md with complete 13-skill listing
- Updated CLAUDE.md marketplace version to v1.6.0
- Updated README.md to reflect 13 available skills
- Updated README.md badges (skills count, version)
- Added youtube-downloader to manual installation instructions
- Added youtube-downloader use case section in README
- Added youtube-downloader to documentation quick links
- Added yt-dlp to requirements section
1.5.0 - 2025-10-26
Added
- New Skill: ppt-creator - Professional presentation creation with dual-path PPTX generation
- Pyramid Principle structure (conclusion → reasons → evidence)
- Assertion-evidence slide framework
- Automatic data synthesis and chart generation (matplotlib)
- Dual-path PPTX creation (Marp CLI + document-skills:pptx)
- Complete orchestration: content → data → charts → PPTX with charts
- 45-60 second speaker notes per slide
- Quality scoring with auto-refinement (target: 75/100)
Changed
- Updated marketplace.json from 11 to 12 skills
- Updated marketplace version from 1.4.0 to 1.5.0
1.4.0 - 2025-10-25
Added
- New Skill: cloudflare-troubleshooting - API-driven Cloudflare diagnostics and troubleshooting
- Systematic investigation of SSL errors, DNS issues, and redirect loops
- Direct Cloudflare API integration for evidence-based troubleshooting
- Bundled Python scripts:
check_cloudflare_config.pyandfix_ssl_mode.py - Comprehensive reference documentation (SSL modes, API overview, common issues)
- New Skill: ui-designer - Design system extraction from UI mockups and screenshots
- Automated design system extraction (colors, typography, spacing)
- Design system documentation generation
- PRD and implementation prompt creation
- Bundled templates: design-system.md, vibe-design-template.md, app-overview-generator.md
- Enhanced
.gitignorepatterns for archives, build artifacts, and documentation files
Changed
- Updated marketplace.json from 9 to 11 skills
- Updated marketplace version from 1.3.0 to 1.4.0
- Enhanced marketplace metadata description to include new capabilities
- Updated CLAUDE.md with complete 11-skill listing
- Updated README.md to reflect 11 available skills
- Updated README.zh-CN.md to reflect 11 available skills
1.3.0 - 2025-10-23
Added
- New Skill: cli-demo-generator - Professional CLI demo generation with VHS automation
- Automated demo generation from command lists
- Batch processing with YAML/JSON configs
- Interactive recording with asciinema
- Smart timing and multiple output formats
- Comprehensive improvement plan with 5 implementation phases
- Automated installation scripts for macOS/Linux (
install.sh) and Windows (install.ps1) - Complete Chinese translation (README.zh-CN.md)
- Quick start guides in English and Chinese (QUICKSTART.md, QUICKSTART.zh-CN.md)
- VHS demo infrastructure for all skills
- Demo tape files for skill-creator, github-ops, and markdown-tools
- Automated demo generation script (
demos/generate_all_demos.sh) - GitHub issue templates (bug report, feature request)
- GitHub pull request template
- FAQ section in README
- Table of Contents in README
- Enhanced badges (Claude Code version, PRs welcome, maintenance status)
- Chinese user guide with CC-Switch recommendation
- Language switcher badges (English/简体中文)
Changed
- BREAKING: Restructured README.md to highlight skill-creator as essential meta-skill
- Moved skill-creator from position #7 to featured "Essential Skill" section
- Updated CLAUDE.md with new priorities and installation commands
- Enhanced documentation navigation and discoverability
- Improved README structure with better organization
Removed
- skill-creator from "Other Available Skills" numbered list (now featured separately)
1.2.0 - 2025-10-22
Added
- llm-icon-finder skill for AI/LLM brand icons
- Comprehensive marketplace structure with 8 skills
- Professional documentation for all skills
- CONTRIBUTING.md with quality standards
- INSTALLATION.md with detailed setup instructions
Changed
- Updated marketplace.json to v1.2.0
- Enhanced skill descriptions and metadata
1.1.0 - 2025-10-15
Added
- skill-creator skill with initialization, validation, and packaging scripts
- repomix-unmixer skill for extracting repomix packages
- teams-channel-post-writer skill for Teams communication
- Enhanced documentation structure
Changed
- Improved skill quality standards
- Updated all skill SKILL.md files with consistent formatting
1.0.0 - 2025-10-08
Added
- Initial release of Claude Code Skills Marketplace
- github-ops skill for GitHub operations
- markdown-tools skill for document conversion
- mermaid-tools skill for diagram generation
- statusline-generator skill for Claude Code customization
- MIT License
- README.md with comprehensive documentation
- Individual skill documentation (SKILL.md files)
Version Numbering
We use Semantic Versioning:
- MAJOR version when you make incompatible API changes
- MINOR version when you add functionality in a backward compatible manner
- PATCH version when you make backward compatible bug fixes
Release Process
- Update version in
.claude-plugin/marketplace.json - Update CHANGELOG.md with changes
- Update README.md version badge
- Create git tag:
git tag -a v1.x.x -m "Release v1.x.x" - Push tag:
git push origin v1.x.x