fix: cross-platform CI test fixes and parse bug fix

- Add .gitattributes to force LF in mock files (Windows autocrlf)
- Fix parse.go: detect line endings from content instead of runtime.GOOS
- Add fail-fast: false to CI matrix; trigger on all branch pushes
- Skip chmod-based tests on Windows (permissions work differently)
- Use filepath.Join for expected paths in Windows path tests
- Use platform-appropriate invalid paths in error tests
- Add Windows absolute path test case for ValidateSheetName
- Skip Unix-specific integration tests on Windows

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/config/config_extended_test.go

@@ -3,6 +3,7 @@ package config
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 
 	"github.com/cheat/cheat/internal/mock"
@@ -226,6 +227,10 @@ cheatpaths:
 
 // TestConfigGetCwdError tests error handling when os.Getwd fails
 func TestConfigGetCwdError(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Windows does not allow removing the current directory")
+	}
+
 	// This is difficult to test without being able to break os.Getwd
 	// We'll create a scenario where the current directory is removed
 

internal/config/config_test.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"path/filepath"
 	"reflect"
+	"runtime"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
@@ -78,6 +79,9 @@ func TestConfigFailure(t *testing.T) {
 // TestEmptyEditor asserts that envvars are respected if an editor is not
 // specified in the configs
 func TestEmptyEditor(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Editor() returns notepad on Windows before checking env vars")
+	}
 
 	// clear the environment variables
 	os.Setenv("VISUAL", "")

internal/config/init_test.go

@@ -3,6 +3,7 @@ package config
 import (
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 )
@@ -74,12 +75,18 @@ func TestInitCreateDirectory(t *testing.T) {
 // TestInitWriteError tests error handling when file write fails
 func TestInitWriteError(t *testing.T) {
 	// Skip this test if running as root (can write anywhere)
-	if os.Getuid() == 0 {
+	if runtime.GOOS != "windows" && os.Getuid() == 0 {
 		t.Skip("Cannot test write errors as root")
 	}
 
+	// Use a platform-appropriate invalid path
+	invalidPath := "/dev/null/impossible/path/conf.yml"
+	if runtime.GOOS == "windows" {
+		invalidPath = `NUL\impossible\path\conf.yml`
+	}
+
 	// Try to write to a read-only directory
-	err := Init("/dev/null/impossible/path/conf.yml", "test")
+	err := Init(invalidPath, "test")
 	if err == nil {
 		t.Error("expected error when writing to invalid path, got nil")
 	}

internal/config/paths_test.go

@@ -1,7 +1,9 @@
 package config
 
 import (
+	"path/filepath"
 	"reflect"
+	"runtime"
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
@@ -10,6 +12,9 @@ import (
 // TestValidatePathsNix asserts that the proper config paths are returned on
 // *nix platforms
 func TestValidatePathsNix(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("filepath.Join uses backslashes on Windows")
+	}
 
 	// mock the user's home directory
 	home := "/home/foo"
@@ -57,6 +62,9 @@ func TestValidatePathsNix(t *testing.T) {
 // TestValidatePathsNixNoXDG asserts that the proper config paths are returned
 // on *nix platforms when `XDG_CONFIG_HOME is not set
 func TestValidatePathsNixNoXDG(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("filepath.Join uses backslashes on Windows")
+	}
 
 	// mock the user's home directory
 	home := "/home/foo"
@@ -106,8 +114,8 @@ func TestValidatePathsWindows(t *testing.T) {
 
 	// mock some envvars
 	envvars := map[string]string{
-		"APPDATA":     "/apps",
-		"PROGRAMDATA": "/programs",
+		"APPDATA":     filepath.Join("C:", "apps"),
+		"PROGRAMDATA": filepath.Join("C:", "programs"),
 	}
 
 	// get the paths for the platform
@@ -118,8 +126,8 @@ func TestValidatePathsWindows(t *testing.T) {
 
 	// specify the expected output
 	want := []string{
-		"/apps/cheat/conf.yml",
-		"/programs/cheat/conf.yml",
+		filepath.Join("C:", "apps", "cheat", "conf.yml"),
+		filepath.Join("C:", "programs", "cheat", "conf.yml"),
 	}
 
 	// assert that output matches expectations