Update @github/copilot to 1.0.64-1

.github/actions/setup-copilot/action.yml

@@ -22,7 +22,16 @@ runs:
       shell: bash
     - name: Set CLI path
       id: cli-path
-      run: echo "path=$(pwd)/nodejs/node_modules/@github/copilot/index.js" >> $GITHUB_OUTPUT
+      run: |
+        # As of CLI 1.0.64-1 the @github/copilot package is a thin loader; the
+        # runnable index.js ships in the installed platform package
+        # (e.g. @github/copilot-linux-x64). Exactly one is installed.
+        cli_path=$(ls "$(pwd)"/nodejs/node_modules/@github/copilot-*/index.js 2>/dev/null | head -n1)
+        if [ -z "$cli_path" ]; then
+          echo "Could not find @github/copilot platform package (index.js) under nodejs/node_modules" >&2
+          exit 1
+        fi
+        echo "path=$cli_path" >> $GITHUB_OUTPUT
       shell: bash
     - name: Verify CLI works
       run: node ${{ steps.cli-path.outputs.path }} --version

.github/workflows/java-sdk-tests.yml

@@ -72,7 +72,7 @@ jobs:
         run: mvn javadoc:javadoc -q
 
       - name: Verify CLI works
-        run: node ../nodejs/node_modules/@github/copilot/index.js --version
+        run: node ../nodejs/node_modules/@github/copilot/npm-loader.js --version
 
       - name: Run spotless check
         if: matrix.test-jdk == '25'

docs/features/image-input.md

@@ -345,7 +345,7 @@ func main() {
 		Prompt: "Describe what you see in this image",
 		Attachments: []copilot.Attachment{
             &copilot.AttachmentBlob{
-                Data:        base64ImageData,
+                Data:        &base64ImageData,
                 MIMEType:    mimeType,
 				DisplayName: &displayName,
 			},
@@ -362,7 +362,7 @@ session.Send(ctx, copilot.MessageOptions{
     Prompt: "Describe what you see in this image",
     Attachments: []copilot.Attachment{
         &copilot.AttachmentBlob{
-            Data:        base64ImageData, // base64-encoded string
+            Data:        &base64ImageData, // base64-encoded string
             MIMEType:    mimeType,
             DisplayName: &displayName,
         },

dotnet/test/Harness/E2ETestContext.cs

@@ -140,11 +140,21 @@ private static string GetCliPath(string repoRoot)
         var envPath = Environment.GetEnvironmentVariable("COPILOT_CLI_PATH");
         if (!string.IsNullOrEmpty(envPath)) return envPath;
 
-        var path = Path.Combine(repoRoot, "nodejs/node_modules/@github/copilot/index.js");
-        if (!File.Exists(path))
-            throw new InvalidOperationException($"CLI not found at {path}. Run 'npm install' in the nodejs directory first.");
+        // As of CLI 1.0.64-1 the @github/copilot package is a thin loader; the
+        // runnable index.js ships in the installed platform package
+        // (e.g. @github/copilot-linux-x64). Exactly one is installed.
+        var githubModules = Path.Join(repoRoot, "nodejs", "node_modules", "@github");
+        if (Directory.Exists(githubModules))
+        {
+            var candidate = Directory.EnumerateDirectories(githubModules, "copilot-*")
+                .Select(dir => Path.Join(dir, "index.js"))
+                .FirstOrDefault(File.Exists);
+            if (candidate != null)
+                return candidate;
+        }
 
-        return path;
+        throw new InvalidOperationException(
+            $"CLI not found under {githubModules}. Run 'npm install' in the nodejs directory first.");
     }
 
     public async Task ConfigureForTestAsync(string testFile, [CallerMemberName] string? testName = null)
@@ -173,6 +183,11 @@ public Dictionary<string, string> GetEnvironment()
             .ToDictionary(e => (string)e.Key, e => e.Value?.ToString());
 
         env["COPILOT_API_URL"] = ProxyUrl;
+        // Route GitHub API calls (e.g. the MCP registry policy check) to the
+        // replay proxy so MCP enablement stays hermetic. Without this the CLI
+        // reaches the real api.github.com, which is slow/unreachable on macOS
+        // CI runners and makes MCP servers time out before reaching connected.
+        env["COPILOT_DEBUG_GITHUB_API_URL"] = ProxyUrl;
         env["COPILOT_HOME"] = HomeDir;
         env["GH_CONFIG_DIR"] = HomeDir;
         env["XDG_CONFIG_HOME"] = HomeDir;

go/client_test.go

@@ -420,18 +420,16 @@ func TestClient_SessionIdleTimeoutSeconds(t *testing.T) {
 }
 
 func findCLIPathForTest() string {
-	abs, _ := filepath.Abs("../nodejs/node_modules/@github/copilot/index.js")
-	if fileExistsForTest(abs) {
-		return abs
+	base, err := filepath.Abs("../nodejs/node_modules/@github")
+	if err == nil {
+		matches, _ := filepath.Glob(filepath.Join(base, "copilot-*", "index.js"))
+		if len(matches) > 0 {
+			return matches[0]
+		}
 	}
 	return ""
 }
 
-func fileExistsForTest(path string) bool {
-	_, err := os.Stat(path)
-	return err == nil
-}
-
 func TestCreateSessionRequest_ClientName(t *testing.T) {
 	t.Run("includes clientName in JSON when set", func(t *testing.T) {
 		req := createSessionRequest{ClientName: "my-app"}
@@ -1098,7 +1096,7 @@ func TestModelBillingTokenPricesJSON(t *testing.T) {
 				"inputPrice": 4.0,
 				"outputPrice": 16.0,
 				"cachePrice": 1.0,
-				"contextMax": 1000000
+				"maxPromptTokens": 1000000
 			}
 		}
 	}`
@@ -1109,10 +1107,10 @@ func TestModelBillingTokenPricesJSON(t *testing.T) {
 		BatchSize:   int64Ptr(1000000),
 		ContextMax:  int64Ptr(128000),
 		LongContext: &rpc.ModelBillingTokenPricesLongContext{
-			InputPrice:  Float64(4.0),
-			OutputPrice: Float64(16.0),
-			CachePrice:  Float64(1.0),
-			ContextMax:  int64Ptr(1000000),
+			InputPrice:      Float64(4.0),
+			OutputPrice:     Float64(16.0),
+			CachePrice:      Float64(1.0),
+			MaxPromptTokens: int64Ptr(1000000),
 		},
 	}
 
@@ -1135,8 +1133,8 @@ func TestModelBillingTokenPricesJSON(t *testing.T) {
 	if lc.InputPrice == nil || *lc.InputPrice != 4.0 {
 		t.Errorf("unexpected LongContext.InputPrice: %v", lc.InputPrice)
 	}
-	if lc.ContextMax == nil || *lc.ContextMax != 1000000 {
-		t.Errorf("unexpected LongContext.ContextMax: %v", lc.ContextMax)
+	if lc.MaxPromptTokens == nil || *lc.MaxPromptTokens != 1000000 {
+		t.Errorf("unexpected LongContext.MaxPromptTokens: %v", lc.MaxPromptTokens)
 	}
 
 	// Round-trip back to JSON and ensure the nested structure survives.

go/internal/e2e/session_e2e_test.go

@@ -1104,7 +1104,7 @@ func TestSessionBlobAttachmentE2E(t *testing.T) {
 			Prompt: "Describe this image",
 			Attachments: []copilot.Attachment{
 				&copilot.AttachmentBlob{
-					Data:        data,
+					Data:        &data,
 					MIMEType:    mimeType,
 					DisplayName: &displayName,
 				},

go/internal/e2e/testharness/context.go

@@ -29,11 +29,17 @@ func CLIPath() string {
 			return
 		}
 
-		// Look for CLI in sibling nodejs directory's node_modules
-		abs, err := filepath.Abs("../../../nodejs/node_modules/@github/copilot/index.js")
-		if err == nil && fileExists(abs) {
-			cliPath = abs
-			return
+		// Look for CLI in sibling nodejs directory's node_modules. As of CLI
+		// 1.0.64-1 the @github/copilot package is a thin loader; the runnable
+		// index.js ships in the installed platform package
+		// (e.g. @github/copilot-linux-x64).
+		base, err := filepath.Abs("../../../nodejs/node_modules/@github")
+		if err == nil {
+			matches, _ := filepath.Glob(filepath.Join(base, "copilot-*", "index.js"))
+			if len(matches) > 0 {
+				cliPath = matches[0]
+				return
+			}
 		}
 	})
 	return cliPath
@@ -207,6 +213,11 @@ func (c *TestContext) Env() []string {
 	env = append(env, c.proxy.ProxyEnv()...)
 	env = append(env,
 		"COPILOT_API_URL="+c.ProxyURL,
+		// Route GitHub API calls (e.g. the MCP registry policy check) to the
+		// replay proxy so MCP enablement stays hermetic. Without this the CLI
+		// reaches the real api.github.com, which is slow/unreachable on macOS
+		// CI runners and makes MCP servers time out before reaching connected.
+		"COPILOT_DEBUG_GITHUB_API_URL="+c.ProxyURL,
 		"COPILOT_HOME="+c.HomeDir,
 		"COPILOT_SDK_AUTH_TOKEN="+defaultGitHubToken,
 		"GH_CONFIG_DIR="+c.HomeDir,