feat: multi-language support — PHP, Ruby, Perl, Go (binary-env)

- PHP: ghcr.io/fission/php-env, entrypoint main.php::handler
- Ruby: ghcr.io/fission/ruby-env, entrypoint handler (single-word)
- Perl: ghcr.io/fission/perl-env (version=1), sub {} return value
- Go: ghcr.io/fission/binary-env with pre-compiled binary (shell script placeholder)

Provider changes:
- package_resource: added main.php, main.rb, main.pl to source_dir candidates
- function_resource: relaxed entrypoint validation to allow PHP (::), Ruby, Perl (single-word)
- function_resource_test: updated BadFormat test to reflect new valid formats

terraform/provider/internal/resources/function_resource.go

@@ -290,9 +290,16 @@ func unstructuredToFunctionModel(functionObject *unstructured.Unstructured, base
 }
 
 func validateEntrypointAgainstPackageSource(entrypoint string, pkg *unstructured.Unstructured) error {
+	if entrypoint == "" {
+		return fmt.Errorf("entrypoint не может быть пустым")
+	}
+
+	// Для Python/Go/JS: валидируем формат module.function и наличие функции в исходнике.
+	// Для PHP (module::function), Ruby (function), Perl (function) — допускаем любой непустой формат.
 	parts := strings.Split(entrypoint, ".")
 	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
-		return fmt.Errorf("entrypoint %q должен иметь формат module.function", entrypoint)
+		// Не стандартный module.function — допускаем (PHP, Ruby, Perl и др.)
+		return nil
 	}
 
 	if parts[0] != "main" {

terraform/provider/internal/resources/function_resource_test.go

@@ -70,7 +70,12 @@ func TestValidateEntrypointAgainstPackageSourcePythonMissing(t *testing.T) {
 
 func TestValidateEntrypointAgainstPackageSourceBadFormat(t *testing.T) {
 	pkg := &unstructured.Unstructured{}
-	if err := validateEntrypointAgainstPackageSource("main", pkg); err == nil {
-		t.Fatalf("expected validation error for bad entrypoint format")
+	// Пустой entrypoint должен быть ошибкой
+	if err := validateEntrypointAgainstPackageSource("", pkg); err == nil {
+		t.Fatalf("expected validation error for empty entrypoint")
+	}
+	// Одиночное слово допустимо (Ruby, Perl)
+	if err := validateEntrypointAgainstPackageSource("handler", pkg); err != nil {
+		t.Fatalf("unexpected error for single-word entrypoint: %v", err)
 	}
 }

terraform/provider/internal/resources/package_resource.go

@@ -71,7 +71,7 @@ func (r *PackageResource) Schema(_ context.Context, _ resource.SchemaRequest, re
 			},
 			"source_dir": schema.StringAttribute{
 				Optional:    true,
-				Description: "Путь к директории с кодом (поддерживаются main.py, main.js, main.go).",
+				Description: "Путь к директории с кодом (поддерживаются main.py, main.js, main.go, main.php, main.rb, main.pl).",
 			},
 			"code_path": schema.StringAttribute{
 				Optional:    true,
@@ -355,7 +355,7 @@ func loadPackageLiteral(sourceDir, codePath string) ([]byte, error) {
 
 // resolveMainSourceFile выбирает основной файл исходника из source_dir.
 func resolveMainSourceFile(sourceDir string) (string, error) {
-	candidates := []string{"main.py", "main.js", "main.go"}
+	candidates := []string{"main.py", "main.js", "main.go", "main.php", "main.rb", "main.pl"}
 	for _, candidate := range candidates {
 		candidatePath := filepath.Join(sourceDir, candidate)
 		fileInfo, err := os.Stat(candidatePath)
@@ -364,7 +364,7 @@ func resolveMainSourceFile(sourceDir string) (string, error) {
 		}
 	}
 
-	return "", fmt.Errorf("source_dir %q must contain one of: main.py, main.js, main.go", sourceDir)
+	return "", fmt.Errorf("source_dir %q must contain one of: main.py, main.js, main.go, main.php, main.rb, main.pl", sourceDir)
 }
 
 // packageToUnstructured преобразует Terraform model в Kubernetes CRD payload.