fix(analyzers): Prefer NestJS provider analysis

NestJS imports are a stronger framework signal than Angular's shared decorator names. Give the NestJS analyzer precedence so providers keep their Nest-specific classification and metadata.

Author: aolin480

src/analyzers/nestjs/index.ts

@@ -93,7 +93,7 @@ export class NestJsAnalyzer implements FrameworkAnalyzer {
   readonly name = 'nestjs';
   readonly version = '1.0.0';
   readonly supportedExtensions = ['.ts', '.js', '.mjs', '.cjs', '.mts', '.cts'];
-  readonly priority = 85;
+  readonly priority = 105;
 
   canAnalyze(filePath: string, content?: string): boolean {
     const extension = path.extname(filePath).toLowerCase();

src/core/indexer.ts

@@ -283,7 +283,7 @@ export class CodebaseIndexer {
       analyzers: {
         angular: { enabled: true, priority: 100 },
         nextjs: { enabled: false, priority: 90 },
-        nestjs: { enabled: false, priority: 85 },
+        nestjs: { enabled: false, priority: 105 },
         react: { enabled: false, priority: 90 },
         vue: { enabled: false, priority: 90 },
         generic: { enabled: true, priority: 10 }

tests/analyzer-registry.test.ts

@@ -94,10 +94,26 @@ describe('AnalyzerRegistry', () => {
       expect(react).toBeDefined();
       expect(generic).toBeDefined();
       expect(angular!.priority).toBeGreaterThan(generic!.priority);
-      expect(nextjs!.priority).toBeGreaterThan(nestjs!.priority);
+      expect(nestjs!.priority).toBeGreaterThan(angular!.priority);
       expect(nestjs!.priority).toBeGreaterThan(react!.priority);
       expect(nextjs!.priority).toBeGreaterThan(react!.priority);
       expect(react!.priority).toBeGreaterThan(generic!.priority);
     });
+
+    it('should prefer NestJS when framework decorators overlap with Angular', () => {
+      const content = `
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class PaymentsService {}
+`;
+
+      expect(
+        analyzerRegistry.findAllAnalyzers('/tmp/payments.service.ts', content).map((a) => a.name)
+      ).toEqual(['nestjs', 'angular', 'generic']);
+      expect(analyzerRegistry.findAnalyzer('/tmp/payments.service.ts', content)?.name).toBe(
+        'nestjs'
+      );
+    });
   });
 });