fix: auto-discover CLI path in scenario test harness

The main verify.sh now auto-discovers COPILOT_CLI_PATH from the Node
SDK's bundled @github/copilot package using ESM import.meta.resolve.
This fixes TS, Python, and C# scenarios that were failing with
ERR_MODULE_NOT_FOUND / 'CLI not found' because the bundled CLI binary
wasn't resolvable from the scenario directory's node_modules.

Also fix 6 individual scenario verify.sh scripts that used the broken
require.resolve('@github/copilot') CJS pattern (fails due to package
exports restrictions) with the working ESM resolution.

Go scenarios were unaffected — they embed the CLI binary at compile time.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: patniko

test/scenarios/bundling/app-backend-to-server/verify.sh

@@ -31,7 +31,7 @@ if [ -z "${COPILOT_CLI_PATH:-}" ]; then
   # Try to resolve from the TypeScript sample node_modules
   TS_DIR="$SCRIPT_DIR/typescript"
   if [ -d "$TS_DIR/node_modules/@github/copilot" ]; then
-    COPILOT_CLI_PATH="$(node -e "console.log(require.resolve('@github/copilot'))" 2>/dev/null || true)"
+    COPILOT_CLI_PATH="$(node --input-type=module -e "import{fileURLToPath}from'url';import{dirname,join}from'path';const u=import.meta.resolve('@github/copilot/sdk');console.log(join(dirname(dirname(fileURLToPath(u))),'index.js'));" 2>/dev/null || true)"
   fi
   # Fallback: check PATH
   if [ -z "${COPILOT_CLI_PATH:-}" ]; then

test/scenarios/bundling/app-direct-server/verify.sh

@@ -26,7 +26,7 @@ if [ -z "${COPILOT_CLI_PATH:-}" ]; then
   # Try to resolve from the TypeScript sample node_modules
   TS_DIR="$SCRIPT_DIR/typescript"
   if [ -d "$TS_DIR/node_modules/@github/copilot" ]; then
-    COPILOT_CLI_PATH="$(node -e "console.log(require.resolve('@github/copilot'))" 2>/dev/null || true)"
+    COPILOT_CLI_PATH="$(node --input-type=module -e "import{fileURLToPath}from'url';import{dirname,join}from'path';const u=import.meta.resolve('@github/copilot/sdk');console.log(join(dirname(dirname(fileURLToPath(u))),'index.js'));" 2>/dev/null || true)"
   fi
   # Fallback: check PATH
   if [ -z "${COPILOT_CLI_PATH:-}" ]; then

test/scenarios/sessions/multi-user-long-lived/verify.sh

@@ -28,7 +28,7 @@ if [ -z "${COPILOT_CLI_PATH:-}" ]; then
   # Try to resolve from the TypeScript sample node_modules
   TS_DIR="$SCRIPT_DIR/typescript"
   if [ -d "$TS_DIR/node_modules/@github/copilot" ]; then
-    COPILOT_CLI_PATH="$(node -e "console.log(require.resolve('@github/copilot'))" 2>/dev/null || true)"
+    COPILOT_CLI_PATH="$(node --input-type=module -e "import{fileURLToPath}from'url';import{dirname,join}from'path';const u=import.meta.resolve('@github/copilot/sdk');console.log(join(dirname(dirname(fileURLToPath(u))),'index.js'));" 2>/dev/null || true)"
   fi
   # Fallback: check PATH
   if [ -z "${COPILOT_CLI_PATH:-}" ]; then

test/scenarios/sessions/multi-user-short-lived/verify.sh

@@ -26,7 +26,7 @@ if [ -z "${COPILOT_CLI_PATH:-}" ]; then
   # Try to resolve from the TypeScript sample node_modules
   TS_DIR="$SCRIPT_DIR/typescript"
   if [ -d "$TS_DIR/node_modules/@github/copilot" ]; then
-    COPILOT_CLI_PATH="$(node -e "console.log(require.resolve('@github/copilot'))" 2>/dev/null || true)"
+    COPILOT_CLI_PATH="$(node --input-type=module -e "import{fileURLToPath}from'url';import{dirname,join}from'path';const u=import.meta.resolve('@github/copilot/sdk');console.log(join(dirname(dirname(fileURLToPath(u))),'index.js'));" 2>/dev/null || true)"
   fi
   # Fallback: check PATH
   if [ -z "${COPILOT_CLI_PATH:-}" ]; then

test/scenarios/transport/reconnect/verify.sh

@@ -26,7 +26,7 @@ if [ -z "${COPILOT_CLI_PATH:-}" ]; then
   # Try to resolve from the TypeScript sample node_modules
   TS_DIR="$SCRIPT_DIR/typescript"
   if [ -d "$TS_DIR/node_modules/@github/copilot" ]; then
-    COPILOT_CLI_PATH="$(node -e "console.log(require.resolve('@github/copilot'))" 2>/dev/null || true)"
+    COPILOT_CLI_PATH="$(node --input-type=module -e "import{fileURLToPath}from'url';import{dirname,join}from'path';const u=import.meta.resolve('@github/copilot/sdk');console.log(join(dirname(dirname(fileURLToPath(u))),'index.js'));" 2>/dev/null || true)"
   fi
   # Fallback: check PATH
   if [ -z "${COPILOT_CLI_PATH:-}" ]; then

test/scenarios/transport/tcp/verify.sh

@@ -26,7 +26,7 @@ if [ -z "${COPILOT_CLI_PATH:-}" ]; then
   # Try to resolve from the TypeScript sample node_modules
   TS_DIR="$SCRIPT_DIR/typescript"
   if [ -d "$TS_DIR/node_modules/@github/copilot" ]; then
-    COPILOT_CLI_PATH="$(node -e "console.log(require.resolve('@github/copilot'))" 2>/dev/null || true)"
+    COPILOT_CLI_PATH="$(node --input-type=module -e "import{fileURLToPath}from'url';import{dirname,join}from'path';const u=import.meta.resolve('@github/copilot/sdk');console.log(join(dirname(dirname(fileURLToPath(u))),'index.js'));" 2>/dev/null || true)"
   fi
   # Fallback: check PATH
   if [ -z "${COPILOT_CLI_PATH:-}" ]; then

test/scenarios/verify.sh

@@ -13,7 +13,19 @@ trap cleanup EXIT
 if [ -n "${COPILOT_CLI_PATH:-}" ]; then
   echo "Using CLI override: $COPILOT_CLI_PATH"
 else
-  echo "No COPILOT_CLI_PATH set — SDKs will use their bundled CLI."
+  # Auto-discover CLI from the Node SDK's bundled @github/copilot package
+  DISCOVERED_CLI=$(node --input-type=module -e "
+    import { fileURLToPath } from 'url';
+    import { dirname, join } from 'path';
+    const sdkUrl = import.meta.resolve('@github/copilot/sdk');
+    console.log(join(dirname(dirname(fileURLToPath(sdkUrl))), 'index.js'));
+  " 2>/dev/null || true)
+  if [ -n "$DISCOVERED_CLI" ] && [ -f "$DISCOVERED_CLI" ]; then
+    export COPILOT_CLI_PATH="$DISCOVERED_CLI"
+    echo "Auto-discovered CLI: $COPILOT_CLI_PATH"
+  else
+    echo "⚠️  Could not auto-discover CLI — SDKs will attempt bundled CLI resolution."
+  fi
 fi
 
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