Merge branch 'github:main' into main

Author: AgentiLoop

.agent-plugin/.acp.json

@@ -0,0 +1,20 @@
+{
+  "github-copilot": {
+    "distribution": {
+      "binary": {
+        "darwin-aarch64": {
+          "archive": "https://github.com/github/copilot-cli/releases/download/v1.0.78/copilot-darwin-arm64.tar.gz",
+          "cmd": "./copilot",
+          "args": ["--acp"],
+          "env": {}
+        }
+      }
+    },
+    "extendedFeatures": {
+      "userConfigFile": {
+        "path": "~/.copilot/settings.json",
+        "description": "GitHub Copilot configuration and authentication credentials. Populated automatically by `copilot login`; set `store_token_plaintext: true` and add a token under `copilot_tokens` to supply credentials without an interactive session."
+      }
+    }
+  }
+}

.agent-plugin/icon.svg

@@ -0,0 +1,17 @@
+{
+  "name": "GitHub Copilot",
+  "slug": "github-copilot",
+  "description": "GitHub's AI pair programmer",
+  "version": "0.1.0",
+  "author": {
+    "name": "GitHub",
+    "url": "https://github.com/github"
+  },
+  "repository": "https://github.com/github/CopilotForXcode",
+  "homepage": "https://github.com/features/copilot/",
+  "license": "proprietary",
+  "icon": "https://raw.githubusercontent.com/github/CopilotForXcode/main/.agent-plugin/icon.svg",
+  "tags": ["copilot", "github", "acp", "ai-assistant"],
+  "category": "ai-agent",
+  "platforms": ["darwin-aarch64"]
+}

.agent-plugin/plugin.json

@@ -1,5 +1,5 @@
 blank_issues_enabled: false
 contact_links:
   - name: Questions
-    url: https://github.com/orgs/community/discussions/categories/copilot
+    url: https://github.com/github/CopilotForXcode/discussions
     about: Please ask and answer questions about GitHub Copilot here

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7

.github/dependabot.yml

@@ -27,17 +27,21 @@ jobs:
       fail-fast: false
       matrix:
         include:
+        - language: actions
+          build-mode: none
+        - language: javascript-typescript
+          build-mode: none
         - language: python
           build-mode: none
         - language: swift
           build-mode: manual
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@b96794f015dfd88f77b49b1c93e0fa7110f94c63 # v4.38.0
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
@@ -66,6 +70,6 @@ jobs:
           CODE_SIGNING_ALLOWED="NO"
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@b96794f015dfd88f77b49b1c93e0fa7110f94c63 # v4.38.0
       with:
         category: "/language:${{matrix.language}}"

.github/workflows/auto-close-pr.yml

@@ -123,3 +123,4 @@ Server/dist
 /releases/
 /release/
 /appcast.xml
+

.github/workflows/codeql.yml

@@ -5,6 +5,120 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.51.0 - August 12, 2026
+### Added
+- Support for Kimi K3 through the updated Copilot language server.
+- Agent Client Protocol (ACP) plugin metadata for GitHub Copilot.
+
+### Changed
+- Updated the Copilot language server from 1.488.0 to 1.523.3.
+- Updated the ACP plugin to use Copilot CLI 1.0.78.
+
+### Fixed
+- Fixed model pricing tooltips for the latest token pricing metadata.
+
+## 0.50.0 - May 20, 2026
+### Added
+- Reasoning effort control for supported models: Low, Medium, or High from the model picker to balance response speed and quality.
+- Added internal support for upcoming usage-based billing, including billing updates for the usage panel, usage notifications, and model picker. This will be visible to the user once usage-based billing rolls out.
+
+### Changed
+- Bring Your Own Key (BYOK) is now generally available.
+
+## 0.49.0 - May 15, 2026
+### Added
+- Native Anthropic Messages API (`/v1/messages`) endpoint support.
+- Thinking support in chat for reasoning-capable models.
+- Enhanced rate limit notifications and error messages.
+
+### Changed
+- Refined tool call item UI in agent progress: removed border and divider, repositioned chevron, and adjusted spacing for better readability.
+- Updated Copilot language server to 1.465.5.
+
+## 0.48.0 - April 23, 2026
+### Added
+- Context window usage details in chat, including a token breakdown for system instructions, messages, attached files, and tool results.
+- Auto Compress setting to compact conversation history and save context tokens.
+- Install flow for Xcode's built-in MCP server from settings.
+
+### Changed
+- Custom agents and the Auto model are now generally available.
+- Removed support for macOS 12.
+- Improved UI for model picker tooltips.
+
+### Fixed
+- Fixed an issue where GPT-5.4 requests could return a 400 error.
+- Fixed an issue where the MCP allowlist did not work correctly.
+
+## 0.47.0 - February 4, 2026
+### Added
+- Auto approval for MCP tools, sensitive files, and terminal commands.
+- MCP registry and allowlist are now available (requires editor preview feature flag).
+
+### Changed
+- Improved UI for MCP tool call details.
+- Improved UI for working set header.
+
+### Fixed
+- Fixed toolcall layout issue.
+- Fixed NES display issue.
+- Fixed error message for SSL certificate errors.
+- Fixed several performance issues.
+
+## 0.46.0 - December 11, 2025
+### Added
+- MCP: Support delete MCP server from list.
+
+### Changed
+- Refine built-in tools layout and displaying error and output details.
+- Better support toolCallingLoop continue operation for subagent turn.
+- Update feedback forum link.
+- Update client-side MCP restore and persist.
+- Adopt NES notification.
+
+### Fixed
+- Disable auto focus for fix error window.
+- Fixed an issue where no file change was made when insert_edit_into_file tool succeeds.
+- Fixed an issue where insert edit was applied to the incorrect file.
+- Fixed model picker to use model id instead of model family.
+- Fixed read_file, read_directory tool randomly failing.
+
+## 0.45.0 - November 14, 2025
+### Added
+- New models: GPT-5.1, GPT-5.1-Codex, GPT-5.1-Codex-Mini, Claude Haiku 4.5, and Auto (preview).
+- Added support for custom agents (preview).
+- Introduced the built-in Plan agent (preview).
+- Added support for subagent execution (preview).
+- Added support for Next Edit Suggestions (preview).
+
+### Changed
+- MCP servers now support dynamic OAuth setup for third-party authentication providers.
+- Added a setting to configure the maximum number of tool requests allowed.
+
+### Fixed
+- Fixed an issue that the terminal view in Agent conversation was clipped
+- Fixed an issue that the Chat panel failed to recognize newly created workspaces.
+
+## 0.44.0 - October 15, 2025
+### Added
+- Added support for new models in Chat: Grok Code Fast 1, Claude Sonnet 4.5, Claude Opus 4, Claude Opus 4.1 and GPT-5 mini.
+- Added support for restoring to a saved checkpoint snapshot.
+- Added support for tool selection in agent mode.
+- Added the ability to adjust the chat panel font size.
+- Added the ability to edit a previous chat message and resend it.
+- Introduced a new setting to disable the Copilot “Fix Error” button.
+- Added support for custom instructions in the Code Review feature.
+
+### Changed
+- Switched authentication to a new OAuth app "GitHub Copilot IDE Plugin".
+- Updated the chat layout to a messenger-style conversation view (user messages on the right, responses on the left).
+- Now shows a clearer, more user-friendly message when Copilot finishes responding.
+- Added support for skipping a tool call without ending the conversation.
+
+### Fixed
+- Fixed a command injection vulnerability when opening referenced chat files.
+- Resolved display issues in the chat view on macOS 26.
+
 ## 0.43.0 - September 4, 2025
 ### Fixed
 - Cannot type non-Latin characters in the chat input field.

.gitignore

@@ -175,7 +175,7 @@ actor ExtensionServiceLauncher {
                                     return configuration
                                 }()
                             ) { app, error in
-                                if let error = error {
+                                if error != nil {
                                     continuation.resume(returning: nil)
                                 } else {
                                     continuation.resume(returning: app)