feat: add per-platform INSTALL.md for AI-driven installation

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

understand-anything-plugin/.codex/INSTALL.md

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+# Installing Understand-Anything for Codex
+
+## Prerequisites
+
+- Git
+
+## Installation
+
+1. **Clone the repository:**
+   ```bash
+   git clone https://github.com/Lum1104/Understand-Anything.git ~/.codex/understand-anything
+   ```
+
+2. **Create the skills symlink:**
+   ```bash
+   mkdir -p ~/.agents/skills
+   ln -s ~/.codex/understand-anything/understand-anything-plugin/skills ~/.agents/skills/understand-anything
+   ```
+
+   **Windows (PowerShell):**
+   ```powershell
+   New-Item -ItemType Directory -Force -Path "$env:USERPROFILE\.agents\skills"
+   cmd /c mklink /J "$env:USERPROFILE\.agents\skills\understand-anything" "$env:USERPROFILE\.codex\understand-anything\understand-anything-plugin\skills"
+   ```
+
+3. **Restart Codex** to discover the skills.
+
+## Verify
+
+```bash
+ls -la ~/.agents/skills/understand-anything
+```
+
+You should see a symlink pointing to the skills directory.
+
+## Usage
+
+Skills activate automatically when relevant. You can also invoke directly:
+- "Analyze this codebase and build a knowledge graph"
+- "Help me understand this project's architecture"
+
+## Updating
+
+```bash
+cd ~/.codex/understand-anything && git pull
+```
+
+Skills update instantly through the symlink.
+
+## Uninstalling
+
+```bash
+rm ~/.agents/skills/understand-anything
+rm -rf ~/.codex/understand-anything
+```

understand-anything-plugin/.cursor/INSTALL.md

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+# Installing Understand-Anything for Cursor
+
+## Prerequisites
+
+- Git
+
+## Installation
+
+1. **Clone the repository:**
+   ```bash
+   git clone https://github.com/Lum1104/Understand-Anything.git ~/.cursor/understand-anything
+   ```
+
+2. **Create the plugin symlink:**
+   ```bash
+   mkdir -p ~/.cursor/plugins
+   ln -s ~/.cursor/understand-anything/understand-anything-plugin ~/.cursor/plugins/understand-anything
+   ```
+
+3. **Restart Cursor** to discover the plugin.
+
+## Usage
+
+Skills activate automatically when relevant. Use `/understand` to analyze a codebase.
+
+## Updating
+
+```bash
+cd ~/.cursor/understand-anything && git pull
+```
+
+## Uninstalling
+
+```bash
+rm ~/.cursor/plugins/understand-anything
+rm -rf ~/.cursor/understand-anything
+```

understand-anything-plugin/.openclaw/INSTALL.md

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+# Installing Understand-Anything for OpenClaw
+
+## Prerequisites
+
+- Git
+
+## Installation
+
+1. **Clone the repository:**
+   ```bash
+   git clone https://github.com/Lum1104/Understand-Anything.git ~/.openclaw/understand-anything
+   ```
+
+2. **Create the skills symlink:**
+   ```bash
+   mkdir -p ~/.openclaw/skills
+   ln -s ~/.openclaw/understand-anything/understand-anything-plugin/skills ~/.openclaw/skills/understand-anything
+   ```
+
+3. **Restart OpenClaw** to discover the skills.
+
+## Usage
+
+- `@understand` — Analyze the current codebase
+- `@understand-chat` — Ask questions about the knowledge graph
+- `@understand-dashboard` — Launch the interactive dashboard
+
+## Updating
+
+```bash
+cd ~/.openclaw/understand-anything && git pull
+```
+
+## Uninstalling
+
+```bash
+rm ~/.openclaw/skills/understand-anything
+rm -rf ~/.openclaw/understand-anything
+```

understand-anything-plugin/.opencode/INSTALL.md

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+# Installing Understand-Anything for OpenCode
+
+## Prerequisites
+
+- [OpenCode.ai](https://opencode.ai) installed
+
+## Installation
+
+Add understand-anything to the `plugin` array in your `opencode.json` (global or project-level):
+
+```json
+{
+  "plugin": ["understand-anything@git+https://github.com/Lum1104/Understand-Anything.git"]
+}
+```
+
+Restart OpenCode. The plugin auto-installs and registers all skills.
+
+## Verify
+
+Ask: "List available skills" — you should see understand, understand-chat, understand-dashboard, etc.
+
+## Usage
+
+```
+use skill tool to load understand-anything/understand
+```
+
+Or just ask: "Analyze this codebase and build a knowledge graph"
+
+## Updating
+
+Restart OpenCode — the plugin re-installs from git automatically.
+
+## Uninstalling
+
+Remove the plugin line from `opencode.json` and restart.