♻️ refactor: make BDD test setup DRY with shared testsetup package

- Create pkg/bdd/testsetup package with shared test configuration functions
- Refactor all feature test files to use shared setup (70+ lines reduced)
- Implement dynamic feature path detection by scanning filesystem for directories
- Add getProjectRoot() function to find project root via go.mod
- Maintain all existing functionality (tags, stop on failure, etc.)
- Add fallback to hardcoded paths if filesystem access fails
- Sort feature paths for consistent test execution order

Before: ~35 lines per test file with duplicated setup code
After: ~5 lines per test file using shared functions

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistralai.com>

features/greet/greet_test.go

@@ -1,45 +1,14 @@
 package greet
 
 import (
-	"os"
 	"testing"
 
-	"dance-lessons-coach/pkg/bdd"
-
-	"github.com/cucumber/godog"
+	"dance-lessons-coach/pkg/bdd/testsetup"
 )
 
 func TestGreetBDD(t *testing.T) {
-	// Set FEATURE environment variable for feature-specific configuration
-	os.Setenv("FEATURE", "greet")
-
-	// Allow tag override via environment variable
-	tags := os.Getenv("GODOG_TAGS")
-	if tags == "" {
-		// Default tags if not overridden
-		tags = "~@flaky && ~@todo && ~@skip"
-	}
-
-	// Allow stop on failure override via environment variable
-	stopOnFailure := true // Default for greet tests
-	if envStop := os.Getenv("GODOG_STOP_ON_FAILURE"); envStop != "" {
-		stopOnFailure = envStop == "true" || envStop == "1"
-	}
-
-	suite := godog.TestSuite{
-		Name:                 "dance-lessons-coach BDD Tests - Greet Feature",
-		TestSuiteInitializer: bdd.InitializeTestSuite,
-		ScenarioInitializer:  bdd.InitializeScenario,
-		Options: &godog.Options{
-			Format:        "progress",
-			Paths:         []string{"."},
-			TestingT:      t,
-			Strict:        true,
-			Randomize:     -1,
-			StopOnFailure: stopOnFailure,
-			Tags:          tags,
-		},
-	}
+	config := testsetup.NewFeatureConfig("greet", "progress", true)
+	suite := testsetup.CreateTestSuite(t, config, "dance-lessons-coach BDD Tests - Greet Feature")
 
 	if suite.Run() != 0 {
 		t.Fatal("non-zero status returned, failed to run greet BDD tests")