refactor: replace standard log with zap logger and optimize code patterns

- Migrate all log.Printf/log.Println calls to structured zap logging
- Use cmp.Or for cleaner default value handling
- Replace manual loops with slices.ContainsFunc/IndexFunc
- Add batch query methods (IsLikedBatch, IsFavoritedBatch) to solve N+1 problem
- Update JSON tags from omitempty to omitzero for numeric fields
- Use errgroup-style wg.Go for worker goroutines
- Remove duplicate casbin/v2 dependency (keeping v3)
- Add plans/ to gitignore

internal/service/async_log_manager.go

@@ -1,6 +1,7 @@
 package service
 
 import (
+	"cmp"
 	"context"
 	"os"
 	"sync"
@@ -67,9 +68,11 @@ func NewAsyncLogManager(
 		}
 	}
 
-	for i := 0; i < cfg.WorkerCount; i++ {
-		m.wg.Add(1)
-		go m.worker(i, operationRepo, loginRepo, dataChangeRepo)
+	for i := range cfg.WorkerCount {
+		workerID := i
+		m.wg.Go(func() {
+			m.worker(workerID, operationRepo, loginRepo, dataChangeRepo)
+		})
 	}
 
 	go m.flushScheduler()
@@ -91,8 +94,6 @@ func (m *AsyncLogManager) worker(
 	loginRepo *repository.LoginLogRepository,
 	dataChangeRepo *repository.DataChangeLogRepository,
 ) {
-	defer m.wg.Done()
-
 	opBatch := make([]*model.OperationLog, 0, m.cfg.BatchSize)
 	loginBatch := make([]*model.LoginLog, 0, m.cfg.BatchSize)
 	changeBatch := make([]*model.DataChangeLog, 0, m.cfg.BatchSize)
@@ -228,9 +229,7 @@ func (m *AsyncLogManager) writeToFallback(logType string, logs interface{}) erro
 
 // initFallbackWriter 初始化降级写入器
 func (m *AsyncLogManager) initFallbackWriter() error {
-	if m.cfg.FallbackPath == "" {
-		m.cfg.FallbackPath = "./logs/fallback.log"
-	}
+	m.cfg.FallbackPath = cmp.Or(m.cfg.FallbackPath, "./logs/fallback.log")
 
 	dir := "./logs"
 	if _, err := os.Stat(dir); os.IsNotExist(err) {