fix: address remaining golangci-lint QF1003 and unconvert issues

- Convert if-else chains to tagged switch statements in member_ordering.go (2 instances)
- Convert if-else chain to tagged switch in explicit_member_accessibility.go
- Remove unnecessary string conversion in explicit_member_accessibility.go

These changes address the remaining staticcheck warnings to pass CI.

Author: ScriptedAlchemy

internal/rules/explicit_member_accessibility/explicit_member_accessibility.go

@@ -164,7 +164,7 @@ func findPublicKeywordRange(ctx rule.RuleContext, node *ast.Node) (core.TextRang
 				removeEnd = modifiers.Nodes[i+1].Pos()
 			} else {
 				// Find next token after public keyword
-				text := string(ctx.SourceFile.Text())
+				text := ctx.SourceFile.Text()
 				for removeEnd < len(text) && (text[removeEnd] == ' ' || text[removeEnd] == '\t') {
 					removeEnd++
 				}
@@ -461,12 +461,11 @@ var ExplicitMemberAccessibilityRule = rule.Rule{
 			hasAccessibility := false
 			var readonlyNode *ast.Node
 			for _, mod := range param.Modifiers().Nodes {
-				if mod.Kind == ast.KindReadonlyKeyword {
+				switch kind := mod.Kind; kind {
+				case ast.KindReadonlyKeyword:
 					hasReadonly = true
 					readonlyNode = mod
-				} else if mod.Kind == ast.KindPublicKeyword ||
-					mod.Kind == ast.KindPrivateKeyword ||
-					mod.Kind == ast.KindProtectedKeyword {
+				case ast.KindPublicKeyword, ast.KindPrivateKeyword, ast.KindProtectedKeyword:
 					hasAccessibility = true
 				}
 			}

internal/rules/member_ordering/member_ordering.go

@@ -453,9 +453,10 @@ func getMemberGroups(node *ast.Node, supportsModifiers bool) []string {
 
 	if !supportsModifiers {
 		groups = append(groups, string(nodeType))
-		if nodeType == KindReadonlySignature {
+		switch nt := nodeType; nt {
+		case KindReadonlySignature:
 			groups = append(groups, string(KindSignature))
-		} else if nodeType == KindReadonlyField {
+		case KindReadonlyField:
 			groups = append(groups, string(KindField))
 		}
 		return groups
@@ -511,9 +512,10 @@ func getMemberGroups(node *ast.Node, supportsModifiers bool) []string {
 
 	// Add base member type
 	groups = append(groups, string(nodeType))
-	if nodeType == KindReadonlySignature {
+	switch nt := nodeType; nt {
+	case KindReadonlySignature:
 		groups = append(groups, string(KindSignature))
-	} else if nodeType == KindReadonlyField {
+	case KindReadonlyField:
 		groups = append(groups, string(KindField))
 	}