Add a command-line cline powered by deno

cli/README.md

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+# Cline CLI
+
+A command-line interface for Cline, powered by Deno.
+
+## Installation
+
+1. Make sure you have [Deno](https://deno.land/) installed
+2. Install the CLI globally:
+   ```bash
+   cd cli
+   deno task install
+   ```
+
+If you get a PATH warning during installation, add Deno's bin directory to your PATH:
+```bash
+echo 'export PATH="$HOME/.deno/bin:$PATH"' >> ~/.bashrc  # or ~/.zshrc
+source ~/.bashrc  # or ~/.zshrc
+```
+
+## Usage
+
+```bash
+cline <task> [options]
+```
+
+### Security Model
+
+The CLI implements several security measures:
+
+1. File Operations:
+   - Read/write access limited to working directory (--allow-read=., --allow-write=.)
+   - Prevents access to files outside the project
+
+2. Command Execution:
+   - Strict allowlist of safe commands:
+     * npm (install, run, test, build)
+     * git (status, add, commit, push, pull, clone, checkout, branch)
+     * deno (run, test, fmt, lint, check, compile, bundle)
+     * ls (-l, -a, -la, -lh)
+     * cat, echo
+   - Interactive prompts for non-allowlisted commands:
+     * y - Run once
+     * n - Cancel execution
+     * always - Remember for session
+   - Clear warnings and command details shown
+   - Session-based memory for approved commands
+
+3. Required Permissions:
+   - --allow-read=. - Read files in working directory
+   - --allow-write=. - Write files in working directory
+   - --allow-run - Execute allowlisted commands
+   - --allow-net - Make API calls
+   - --allow-env - Access environment variables
+
+### Options
+
+- `-m, --model <model>` - LLM model to use (default: "anthropic/claude-3.5-sonnet")
+- `-k, --key <key>` - OpenRouter API key (required, or set OPENROUTER_API_KEY env var)
+- `-h, --help` - Display help for command
+
+### Examples
+
+Analyze code:
+```bash
+export OPENROUTER_API_KEY=sk-or-v1-...
+cline "Analyze this codebase"
+```
+
+Create files:
+```bash
+cline "Create a React component"
+```
+
+Run allowed command:
+```bash
+cline "Run npm install"
+```
+
+Run non-allowlisted command (will prompt for decision):
+```bash
+cline "Run yarn install"
+# Responds with:
+# Warning: Command not in allowlist
+# Command: yarn install
+# Do you want to run this command? (y/n/always)
+```
+
+## Development
+
+The CLI is built with Deno. Available tasks:
+
+```bash
+# Run in development mode
+deno task dev "your task here"
+
+# Install globally
+deno task install
+
+# Type check the code
+deno task check
+```
+
+### Security Features
+
+- File operations restricted to working directory
+- Command execution controlled by allowlist
+- Interactive prompts for unknown commands
+- Session-based command approval
+- Clear warnings and command details
+- Permission validation at runtime