docs: add contributing, security, support, and code-of-conduct docs; add docs index

CHANGES
- Add CODE_OF_CONDUCT defining respectful, collaborative community behavior
- Add CONTRIBUTING with setup, testing, PR, changelog requirements
- Add SECURITY policy with reporting process and response timelines
- Add SUPPORT guide for bugs, features, discussions, expectations
- Add docs README indexing guides, quick starts, contributor essentials

docs/README.md

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+# Fabric Documentation
+
+Welcome to the Fabric documentation! This directory contains detailed guides and technical documentation for various features and components of Fabric.
+
+## 📚 Available Documentation
+
+### Core Features
+
+**[Automated-Changelog-Usage.md](./Automated-Changelog-Usage.md)**
+Complete guide for developers on using the automated changelog system. Covers the workflow for generating PR changelog entries during development, including setup, validation, and CI/CD integration.
+
+**[YouTube-Processing.md](./YouTube-Processing.md)**
+Comprehensive guide for processing YouTube videos and playlists with Fabric. Covers transcript extraction, comment processing, metadata retrieval, and advanced yt-dlp configurations.
+
+**[Using-Speech-To-Text.md](./Using-Speech-To-Text.md)**
+Documentation for Fabric's speech-to-text capabilities using OpenAI's Whisper models. Learn how to transcribe audio and video files and process them through Fabric patterns.
+
+### User Interface & Experience
+
+**[Desktop-Notifications.md](./Desktop-Notifications.md)**
+Guide to setting up desktop notifications for Fabric commands. Useful for long-running tasks and multitasking scenarios with cross-platform notification support.
+
+**[Shell-Completions.md](./Shell-Completions.md)**
+Instructions for setting up intelligent tab completion for Fabric in Zsh, Bash, and Fish shells. Includes automated installation and manual setup options.
+
+**[Gemini-TTS.md](./Gemini-TTS.md)**
+Complete guide for using Google Gemini's text-to-speech features with Fabric. Covers voice selection, audio generation, and integration with Fabric patterns.
+
+### Development & Architecture
+
+**[Automated-ChangeLog.md](./Automated-ChangeLog.md)**
+Technical documentation outlining the automated CHANGELOG system architecture for CI/CD integration. Details the infrastructure and workflow for maintainers.
+
+**[Project-Restructured.md](./Project-Restructured.md)**
+Project restructuring plan and architectural decisions. Documents the transition to standard Go conventions and project organization improvements.
+
+**[NOTES.md](./NOTES.md)**
+Development notes on refactoring efforts, model management improvements, and architectural changes. Includes technical details on vendor and model abstraction.
+
+### Audio Resources
+
+**[voices/README.md](./voices/README.md)**
+Index of Gemini TTS voice samples demonstrating different AI voice characteristics available in Fabric.
+
+## 🗂️ Additional Resources
+
+### Configuration Files
+
+- `./notification-config.yaml` - Example notification configuration
+
+### Images
+
+- `images/` - Screenshots and visual documentation assets
+  - `fabric-logo-gif.gif` - Animated Fabric logo
+  - `fabric-summarize.png` - Screenshot of summarization feature
+  - `svelte-preview.png` - Web interface preview
+
+## 🚀 Quick Start
+
+New to Fabric? Start with these essential docs:
+
+1. **[../README.md](../README.md)** - Main project README with installation and basic usage
+2. **[Shell-Completions.md](./Shell-Completions.md)** - Set up tab completion for better CLI experience
+3. **[YouTube-Processing.md](./YouTube-Processing.md)** - Learn one of Fabric's most popular features
+4. **[Desktop-Notifications.md](./Desktop-Notifications.md)** - Get notified when long tasks complete
+
+## 🔧 For Contributors
+
+Contributing to Fabric? These docs are essential:
+
+1. **[./CONTRIBUTING.md](./CONTRIBUTING.md)** - Contribution guidelines and setup
+2. **[Automated-Changelog-Usage.md](./Automated-Changelog-Usage.md)** - Required workflow for PR submissions
+3. **[Project-Restructured.md](./Project-Restructured.md)** - Understanding project architecture
+4. **[NOTES.md](./NOTES.md)** - Current development priorities and patterns
+
+## 📝 Documentation Standards
+
+When adding new documentation:
+
+- Use clear, descriptive filenames
+- Include practical examples and use cases
+- Update this README index with your new docs
+- Follow the established markdown formatting conventions
+- Test all code examples before publication
+
+---
+
+*For general help and support, see [./SUPPORT.md](./SUPPORT.md)*