fix(detection): support multi-line trait use statements

Fixes issue #129: trait use statements formatted across multiple lines were
not being detected, causing false "not used" warnings on their imports.

- Handle multi-line trait use by continuing to read lines until ; or { is found
- Same pattern used for multi-line grouped namespace imports
- Add test for multi-line trait use detection

Author: MehediDracula

src/core/PhpClassDetector.ts

@@ -323,7 +323,8 @@ export class PhpClassDetector {
         const lines = text.split('\n');
         let pastClassDeclaration = false;
 
-        for (const line of lines) {
+        for (let i = 0; i < lines.length; i++) {
+            const line = lines[i];
             if (!pastClassDeclaration) {
                 if (/^\s*(?:abstract\s+|final\s+|readonly\s+)*(?:class|trait|interface|enum)\s+\w+/.test(line)) {
                     pastClassDeclaration = true;
@@ -332,7 +333,19 @@ export class PhpClassDetector {
             }
 
             if (/^\s*use\s+/.test(line) && !/^\s*use\s*\(/.test(line)) {
-                const match = line.match(/^\s*use\s+(.+?)\s*[;{]/);
+                // Handle multi-line trait use statements
+                let fullLine = line;
+                if (!line.match(/[;{]/)) {
+                    for (let j = i + 1; j < lines.length; j++) {
+                        fullLine += ' ' + lines[j].trim();
+                        if (lines[j].match(/[;{]/)) {
+                            i = j;
+                            break;
+                        }
+                    }
+                }
+
+                const match = fullLine.match(/^\s*use\s+(.+?)\s*[;{]/);
                 if (match) {
                     const traits = match[1].split(',');
                     for (const trait of traits) {

src/test/PhpClassDetector.test.ts

@@ -377,6 +377,14 @@ class UserController extends Controller {
             assert.ok(result.includes('A'));
             assert.ok(result.includes('B'));
         });
+
+        it('should detect multi-line trait use statements', () => {
+            const text = `class Foo {\n    use Sluggable,\n        HasMedia,\n        HasPreferences;\n}`;
+            const result = detector.getFromTraitUse(text);
+            assert.ok(result.includes('Sluggable'));
+            assert.ok(result.includes('HasMedia'));
+            assert.ok(result.includes('HasPreferences'));
+        });
     });
 
     describe('edge cases - empty and boundary inputs', () => {
@@ -892,7 +900,7 @@ class Foo {}`;
             assert.ok(result.includes('Bar'));
         });
 
-        it('should not detect class names in PHPDoc free-text descriptions (#124)', () => {
+        it('should not detect class names in PHPDoc free-text descriptions', () => {
             const text = `<?php
 /**
  * Returns a Logger or Formatter based on the config