feat: New Copilot-CLI Module (#441)

## Description

New Copilot-CLI Module using AgentAPI

Need to test once AgentAPI Changes are pushed.

## Type of Change

- [X] New module
- [ ] Bug fix
- [ ] Feature/enhancement
- [ ] Documentation
- [ ] Other

## Module Information

**Path:** `registry/coder-labs/modules/copilot-cli`  
**New version:** `v0.1.0`  
**Breaking change:** [ ] Yes [ ] No

## Testing & Validation

- [X] Tests pass (`bun test`)
- [X] Code formatted (`bun run fmt`)
- [ ] Changes tested locally

## Related Issues

<!-- Link related issues or write "None" if not applicable -->

---------

Co-authored-by: Atif Ali <[email protected]>

Author: DevelopmentCats

registry/coder-labs/modules/copilot/README.md

@@ -0,0 +1,210 @@
+---
+display_name: Copilot
+description: GitHub Copilot CLI agent for AI-powered terminal assistance
+icon: ../../../../.icons/github.svg
+verified: false
+tags: [agent, copilot, ai, github, tasks]
+---
+
+# Copilot
+
+Run [GitHub Copilot CLI](https://docs.github.com/copilot/concepts/agents/about-copilot-cli) in your workspace for AI-powered coding assistance directly from the terminal. This module integrates with [AgentAPI](https://github.com/coder/agentapi) for task reporting in the Coder UI.
+
+```tf
+module "copilot" {
+  source   = "registry.coder.com/coder-labs/copilot/coder"
+  version  = "0.1.0"
+  agent_id = coder_agent.example.id
+  workdir  = "/home/coder/projects"
+}
+```
+
+> [!IMPORTANT]
+> This example assumes you have [Coder external authentication](https://coder.com/docs/admin/external-auth) configured with `id = "github"`. If not, you can provide a direct token using the `github_token` variable or provide the correct external authentication id for GitHub by setting `external_auth_id = "my-github"`.
+
+> [!NOTE]
+> By default, this module is configured to run the embedded chat interface as a path-based application. In production, we recommend that you configure a [wildcard access URL](https://coder.com/docs/admin/setup#wildcard-access-url) and set `subdomain = true`. See [here](https://coder.com/docs/tutorials/best-practices/security-best-practices#disable-path-based-apps) for more details.
+
+## Prerequisites
+
+- **Node.js v22+** and **npm v10+**
+- **[Active Copilot subscription](https://docs.github.com/en/copilot/about-github-copilot/subscription-plans-for-github-copilot)** (GitHub Copilot Pro, Pro+, Business, or Enterprise)
+- **GitHub authentication** via one of:
+  - [Coder external authentication](https://coder.com/docs/admin/external-auth) (recommended)
+  - Direct token via `github_token` variable
+  - Interactive login in Copilot
+
+## Examples
+
+### Usage with Tasks
+
+For development environments where you want Copilot to have full access to tools and automatically resume sessions:
+
+```tf
+data "coder_parameter" "ai_prompt" {
+  type        = "string"
+  name        = "AI Prompt"
+  default     = ""
+  description = "Initial task prompt for Copilot."
+  mutable     = true
+}
+
+module "copilot" {
+  source   = "registry.coder.com/coder-labs/copilot/coder"
+  version  = "0.1.0"
+  agent_id = coder_agent.example.id
+  workdir  = "/home/coder/projects"
+
+  ai_prompt       = data.coder_parameter.ai_prompt.value
+  copilot_model   = "claude-sonnet-4.5"
+  allow_all_tools = true
+  resume_session  = true
+
+  trusted_directories = ["/home/coder/projects", "/tmp"]
+}
+```
+
+### Advanced Configuration
+
+Customize tool permissions, MCP servers, and Copilot settings:
+
+```tf
+module "copilot" {
+  source   = "registry.coder.com/coder-labs/copilot/coder"
+  version  = "0.1.0"
+  agent_id = coder_agent.example.id
+  workdir  = "/home/coder/projects"
+
+  # Version pinning (defaults to "0.0.334", use "latest" for newest version)
+  copilot_version = "latest"
+
+  # Tool permissions
+  allow_tools         = ["shell(git)", "shell(npm)", "write"]
+  trusted_directories = ["/home/coder/projects", "/tmp"]
+
+  # Custom Copilot configuration
+  copilot_config = jsonencode({
+    banner = "never"
+    theme  = "dark"
+  })
+
+  # MCP server configuration
+  mcp_config = jsonencode({
+    mcpServers = {
+      filesystem = {
+        command     = "npx"
+        args        = ["-y", "@modelcontextprotocol/server-filesystem", "/home/coder/projects"]
+        description = "Provides file system access to the workspace"
+        name        = "Filesystem"
+        timeout     = 3000
+        type        = "local"
+        tools       = ["*"]
+        trust       = true
+      }
+      playwright = {
+        command     = "npx"
+        args        = ["-y", "@playwright/mcp@latest", "--headless", "--isolated"]
+        description = "Browser automation for testing and previewing changes"
+        name        = "Playwright"
+        timeout     = 5000
+        type        = "local"
+        tools       = ["*"]
+        trust       = false
+      }
+    }
+  })
+
+  # Pre-install Node.js if needed
+  pre_install_script = <<-EOT
+    #!/bin/bash
+    curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash -
+    sudo apt-get install -y nodejs
+  EOT
+}
+```
+
+> [!NOTE]
+> GitHub Copilot CLI does not automatically install MCP servers. You have two options:
+>
+> - Use `npx -y` in the MCP config (shown above) to auto-install on each run
+> - Pre-install MCP servers in `pre_install_script` for faster startup (e.g., `npm install -g @modelcontextprotocol/server-filesystem`)
+
+### Direct Token Authentication
+
+Use this example when you want to provide a GitHub Personal Access Token instead of using Coder external auth:
+
+```tf
+variable "github_token" {
+  type        = string
+  description = "GitHub Personal Access Token"
+  sensitive   = true
+}
+
+module "copilot" {
+  source       = "registry.coder.com/coder-labs/copilot/coder"
+  version      = "0.1.0"
+  agent_id     = coder_agent.example.id
+  workdir      = "/home/coder/projects"
+  github_token = var.github_token
+}
+```
+
+### Standalone Mode
+
+Run Copilot as a command-line tool without task reporting or web interface. This installs and configures Copilot, making it available as a CLI app in the Coder agent bar that you can launch to interact with Copilot directly from your terminal. Set `report_tasks = false` to disable integration with Coder Tasks.
+
+```tf
+module "copilot" {
+  source       = "registry.coder.com/coder-labs/copilot/coder"
+  version      = "0.1.0"
+  agent_id     = coder_agent.example.id
+  workdir      = "/home/coder"
+  report_tasks = false
+  cli_app      = true
+}
+```
+
+## Authentication
+
+The module supports multiple authentication methods (in priority order):
+
+1. **[Coder External Auth](https://coder.com/docs/admin/external-auth) (Recommended)** - Automatic if GitHub external auth is configured in Coder
+2. **Direct Token** - Pass `github_token` variable (OAuth or Personal Access Token)
+3. **Interactive** - Copilot prompts for login via `/login` command if no auth found
+
+> [!NOTE]
+> OAuth tokens work best with Copilot. Personal Access Tokens may have limited functionality.
+
+## Session Resumption
+
+By default, the module resumes the latest Copilot session when the workspace restarts. Set `resume_session = false` to always start fresh sessions.
+
+> [!NOTE]
+> Session resumption requires persistent storage for the home directory or workspace volume. Without persistent storage, sessions will not resume across workspace restarts.
+
+## Troubleshooting
+
+If you encounter any issues, check the log files in the `~/.copilot-module` directory within your workspace for detailed information.
+
+```bash
+# Installation logs
+cat ~/.copilot-module/install.log
+
+# Startup logs
+cat ~/.copilot-module/agentapi-start.log
+
+# Pre/post install script logs
+cat ~/.copilot-module/pre_install.log
+cat ~/.copilot-module/post_install.log
+```
+
+> [!NOTE]
+> To use tasks with Copilot, you must have an active GitHub Copilot subscription.
+> The `workdir` variable is required and specifies the directory where Copilot will run.
+
+## References
+
+- [GitHub Copilot CLI Documentation](https://docs.github.com/en/copilot/concepts/agents/about-copilot-cli)
+- [Installing GitHub Copilot CLI](https://docs.github.com/en/copilot/how-tos/set-up/install-copilot-cli)
+- [AgentAPI Documentation](https://github.com/coder/agentapi)
+- [Coder AI Agents Guide](https://coder.com/docs/tutorials/ai-agents)