[BE-API-009] be-api: Implement track search endpoint

- Added GET /tracks/search route in setupTrackRoutes
- Initialized TrackSearchService and set it in TrackHandler
- Handler SearchTracks and TrackSearchService already existed
- Supports query params: q, genre, artist, page, limit
- Service handles pagination, filtering, and returns tracks with pagination metadata

Phase: PHASE-2
Priority: P1
Progress: 18/267 (6.7%)

VEZA_COMPLETE_MVP_TODOLIST.json

@@ -1512,7 +1512,17 @@
       "description": "GET /api/v1/tracks/search with query params (q, genre, artist, page, limit)",
       "owner": "backend",
       "estimated_hours": 4,
-      "status": "todo",
+      "status": "completed",
+      "completion": {
+        "completed_at": "2025-12-23T09:44:12Z",
+        "actual_hours": 0.5,
+        "commits": [],
+        "files_changed": [
+          "veza-backend-api/internal/api/router.go"
+        ],
+        "notes": "Handler SearchTracks and TrackSearchService already existed and were fully implemented. Added GET /tracks/search route in setupTrackRoutes. Initialized TrackSearchService and set it in TrackHandler via SetSearchService. Handler supports query params: q (search query), genre, artist (via TrackSearchParams), page, limit. Service handles pagination, filtering, and returns tracks with pagination metadata.",
+        "issues_encountered": []
+      },
       "files_involved": [],
       "implementation_steps": [
         {

veza-backend-api/internal/api/router.go

@@ -459,10 +459,15 @@ func (r *APIRouter) setupTrackRoutes(router *gin.RouterGroup) {
 	}
 	trackHandler.SetUploadValidator(uploadValidator)
 
+	// BE-API-009: Initialize TrackSearchService for track search functionality
+	trackSearchService := services.NewTrackSearchService(r.db.GormDB)
+	trackHandler.SetSearchService(trackSearchService)
+
 	tracks := router.Group("/tracks")
 	{
 		// Public routes
 		tracks.GET("", trackHandler.ListTracks)
+		tracks.GET("/search", trackHandler.SearchTracks) // BE-API-009: Track search endpoint
 		tracks.GET("/:id", trackHandler.GetTrack)
 		tracks.GET("/:id/stats", trackHandler.GetTrackStats)
 		tracks.GET("/:id/history", trackHandler.GetTrackHistory)

veza-backend-api/internal/services/user_service_search.go

@@ -66,4 +66,3 @@ func (s *UserService) SearchUsers(ctx context.Context, params SearchUsersParams)
 
 	return users, total, nil
 }
-