fix: resolve proxy transport false-positives

pkg/desktop/transport/transport.go

@@ -140,18 +140,20 @@ func (f *fallbackTransport) RoundTrip(req *http.Request) (*http.Response, error)
 }
 
 // isProxySocketError checks if the error indicates the proxy socket is unavailable.
-// This includes:
-// - "no such file or directory" - socket file was deleted
-// - "connection refused" - socket exists but nothing is listening
-// - "dial unix" errors - general Unix socket connection failures
+// Direct target TCP dial errors (e.g. dial tcp) return false to avoid disabling the proxy.
 func isProxySocketError(err error) bool {
 	if err == nil {
 		return false
 	}
 
 	errStr := strings.ToLower(err.Error())
 
-	// Check for common proxy socket failure patterns
+	// A bare "dial tcp" error is a target host failure, not a proxy socket failure:
+	// the proxy is only reached via Unix socket or named pipe, never plain TCP.
+	if strings.Contains(errStr, "dial tcp") && !strings.Contains(errStr, "proxyconnect tcp") {
+		return false
+	}
+
 	proxyErrorPatterns := []string{
 		"no such file or directory",   // Socket file deleted
 		"connect: connection refused", // Socket exists but no listener

pkg/desktop/transport/transport_test.go

@@ -83,16 +83,37 @@ func TestIsProxySocketError(t *testing.T) {
 			errStr:   "Post https://api.anthropic.com/v1/messages: proxyconnect tcp: some error",
 			expected: true,
 		},
+		{
+			name:     "proxyconnect tcp with dial tcp error",
+			errStr:   "proxyconnect tcp: dial tcp 10.0.0.1:443: connect: connection refused",
+			expected: true,
+		},
 		{
 			name:     "dial unix error",
 			errStr:   "dial unix /var/run/docker.sock: operation timed out",
 			expected: true,
 		},
+		{
+			name:     "bare connection refused (unix socket missing listener)",
+			errStr:   "connect: connection refused",
+			expected: true,
+		},
+		{
+			name:     "bare-TCP proxy failure (unsupported, should be rejected by guard)",
+			errStr:   "dial tcp 127.0.0.1:8080: connect: connection refused",
+			expected: false, // hit guard, returns false
+		},
 		{
 			name:     "regular network error",
 			errStr:   "dial tcp 192.168.1.1:443: i/o timeout",
 			expected: false,
 		},
+
+		{
+			name:     "target HTTP request dial refusal",
+			errStr:   "Get \"http://127.0.0.1:8080\": dial tcp 127.0.0.1:8080: connect: connection refused",
+			expected: false,
+		},
 		{
 			name:     "HTTP error",
 			errStr:   "HTTP 500: internal server error",

pkg/environment/credential_helper_test.go

@@ -1,6 +1,7 @@
 package environment
 
 import (
+	"runtime"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -17,6 +18,19 @@ func TestNewCredentialHelperProvider(t *testing.T) {
 func TestCredentialHelperProvider_Get(t *testing.T) {
 	t.Parallel()
 
+	echoCmd := "echo"
+	echoArgs := func(v string) []string { return []string{v} }
+	falseCmd := "false"
+
+	if runtime.GOOS == "windows" {
+		echoCmd = "powershell"
+		echoArgs = func(v string) []string {
+			return []string{"-NoProfile", "-Command", "Write-Output '" + v + "'"}
+		}
+		falseCmd = "powershell"
+		// simulate 'false' by exiting with 1
+	}
+
 	tests := []struct {
 		name      string
 		command   string
@@ -25,11 +39,11 @@ func TestCredentialHelperProvider_Get(t *testing.T) {
 		wantValue string
 		wantFound bool
 	}{
-		{"ignores non-DOCKER_TOKEN vars", "echo", []string{"test-token"}, "OTHER_VAR", "", false},
-		{"success", "echo", []string{"my-secret-token"}, DockerDesktopTokenEnv, "my-secret-token", true},
-		{"trims whitespace", "echo", []string{"  token-with-spaces  "}, DockerDesktopTokenEnv, "token-with-spaces", true},
-		{"empty output", "echo", []string{""}, DockerDesktopTokenEnv, "", false},
-		{"command fails", "false", nil, DockerDesktopTokenEnv, "", false},
+		{"ignores non-DOCKER_TOKEN vars", echoCmd, echoArgs("test-token"), "OTHER_VAR", "", false},
+		{"success", echoCmd, echoArgs("my-secret-token"), DockerDesktopTokenEnv, "my-secret-token", true},
+		{"trims whitespace", echoCmd, echoArgs("  token-with-spaces  "), DockerDesktopTokenEnv, "token-with-spaces", true},
+		{"empty output", echoCmd, echoArgs(""), DockerDesktopTokenEnv, "", false},
+		{"command fails", falseCmd, []string{"-NoProfile", "-Command", "exit 1"}, DockerDesktopTokenEnv, "", false},
 		{"command not found", "nonexistent-command-12345", nil, DockerDesktopTokenEnv, "", false},
 	}
 

pkg/model/provider/gemini/schema_boolean_test.go

@@ -2,6 +2,8 @@ package gemini
 
 import (
 	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
 // A tool input schema containing a boolean sub-schema — the shape a JSON Schema
@@ -30,12 +32,8 @@ func TestConvertParametersToSchema_BooleanSubSchema(t *testing.T) {
 	}
 
 	schema, err := ConvertParametersToSchema(params)
-	if err != nil {
-		t.Fatalf("ConvertParametersToSchema: %v", err)
-	}
-	if schema == nil {
-		t.Fatal("nil schema")
-	}
+	require.NoError(t, err)
+	require.NotNil(t, schema)
 	if _, ok := schema.Properties["count"]; !ok {
 		t.Errorf("count property dropped; got %v", schema.Properties)
 	}

pkg/skills/skills_test.go

@@ -1011,6 +1011,13 @@ func TestSkill_IsFork(t *testing.T) {
 }
 
 func TestProjectSearchDirs(t *testing.T) {
+	// On Windows, t.TempDir() is often inside %USERPROFILE% (AppData\Local\Temp).
+	// To ensure the first three tests behave exactly as they do on Unix (where /tmp
+	// is outside $HOME), we mock HOME to a sibling temp directory.
+	fakeHome := t.TempDir()
+	t.Setenv("HOME", fakeHome)
+	t.Setenv("USERPROFILE", fakeHome)
+
 	t.Run("in git repo", func(t *testing.T) {
 		tmpRepo := t.TempDir()
 		require.NoError(t, os.Mkdir(filepath.Join(tmpRepo, ".git"), 0o755))

pkg/tools/builtin/shell/script_shell_test.go

@@ -290,7 +290,7 @@ func TestCreateScriptToolSet_EnvPrecedence(t *testing.T) {
 		},
 		Shell: map[string]latest.ScriptShellToolConfig{
 			"show_env": {
-				Cmd: "env",
+				Cmd: envDumpCmd(),
 				Env: map[string]string{
 					"SCRIPT_PREC_TOOL": "from-tool",
 				},

pkg/tui/components/reasoningblock/reasoningblock_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
+	pathx "github.com/docker/docker-agent/pkg/path"
 	"github.com/docker/docker-agent/pkg/paths"
 	"github.com/docker/docker-agent/pkg/session"
 	"github.com/docker/docker-agent/pkg/tools"
@@ -190,7 +191,7 @@ func TestReasoningBlockExpandedShowsFullToolRenderer(t *testing.T) {
 
 	stripped := ansi.Strip(block.View())
 	assert.Contains(t, stripped, "Edit")
-	assert.Contains(t, stripped, path)
+	assert.Contains(t, stripped, pathx.ShortenHome(path))
 	assert.Contains(t, stripped, "old line")
 	assert.Contains(t, stripped, "new line")
 }