docs: streamline install process with one-line installer scripts and update documentation

- Add markdown file triggers to GitHub workflow
- Update VSCode settings with new spell entries
- Simplify README installation with one-line installers
- Add bash installer script for Unix systems
- Add PowerShell installer script for Windows
- Create installer documentation with usage examples
- Remove redundant pattern from pattern explanations

scripts/installer/README.md

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+# Fabric One-Line Installer
+
+This directory contains the official one-line installer scripts for Fabric.
+
+## Quick Start
+
+### Unix/Linux/macOS
+
+Install Fabric with a single command:
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/danielmiessler/fabric/main/scripts/installer/install.sh | bash
+```
+
+### Windows (PowerShell)
+
+Install Fabric with a single PowerShell command:
+
+```powershell
+iwr -useb https://raw.githubusercontent.com/danielmiessler/fabric/main/scripts/installer/install.ps1 | iex
+```
+
+## Custom Installation Directory
+
+### Unix/Linux/macOS
+
+By default, Fabric is installed to `~/.local/bin`. To install elsewhere:
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/danielmiessler/fabric/main/scripts/installer/install.sh | INSTALL_DIR=/usr/local/bin bash
+```
+
+For system-wide installation (requires sudo):
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/danielmiessler/fabric/main/scripts/installer/install.sh | sudo INSTALL_DIR=/usr/local/bin bash
+```
+
+### Windows (PowerShell)
+
+By default, Fabric is installed to `%USERPROFILE%\.local\bin`. To install elsewhere:
+
+```powershell
+$env:INSTALL_DIR="C:\tools"; iwr -useb https://raw.githubusercontent.com/danielmiessler/fabric/main/scripts/installer/install.ps1 | iex
+```
+
+## Supported Systems
+
+- **Operating Systems**: Darwin (macOS), Linux, Windows
+- **Architectures**: x86_64, arm64, i386 (Windows only)
+
+## What It Does
+
+1. **Detects** your OS and architecture automatically
+2. **Downloads** the latest Fabric release from GitHub
+3. **Extracts** only the `fabric` binary (not the full archive)
+4. **Installs** to your chosen directory (default: `~/.local/bin`)
+5. **Verifies** the installation works correctly
+6. **Provides** PATH setup instructions if needed
+
+## Features
+
+- ✅ **Cross-platform** - Unix/Linux/macOS (bash) and Windows (PowerShell)
+- ✅ **Zero dependencies** - No additional tools required
+- ✅ **Automatic detection** - OS and architecture
+- ✅ **Smart extraction** - Only the binary, not extra files
+- ✅ **Error handling** - Clear messages and graceful failures
+- ✅ **PATH guidance** - Helps you set up your environment
+- ✅ **Verification** - Tests the installation before completing
+
+## Requirements
+
+### Unix/Linux/macOS
+
+- `curl` or `wget` for downloading
+- `tar` for extraction (standard on all Unix systems)
+- Write permissions to the installation directory
+
+### Windows
+
+- PowerShell (built into Windows)
+- Write permissions to the installation directory
+
+## After Installation
+
+1. **Configure Fabric**: Run `fabric --setup`
+2. **Add API keys**: Follow the setup prompts
+3. **Start using**: Try `fabric --help` or `fabric --listpatterns`
+
+## Troubleshooting
+
+**Permission denied?**
+
+- Try with `sudo` for system directories
+- Or choose a directory you can write to: `INSTALL_DIR=~/bin`
+
+**Binary not found after install?**
+
+- Add the install directory to your PATH
+- The installer provides specific instructions for your shell
+
+**Download fails?**
+
+- Check your internet connection
+- Verify GitHub is accessible from your network
+
+## Alternative Installation Methods
+
+If the one-liner doesn't work for you, see the main [Installation Guide](../../README.md#installation) for:
+
+- Binary downloads
+- Package managers (Homebrew, winget, AUR)
+- Docker images
+- Building from source