feat(database): add repairSmokeAIAdviceIndexes function and corresponding tests

- Implemented repairSmokeAIAdviceIndexes to manage the unique index for fa_smoke_ai_advice.
- Added unit tests for the new function to ensure correct index recreation and validation.
- Updated AutoMigrate to include the new index repair function.

internal/smoke/service/smoke_ai_debug_log.go

@@ -0,0 +1,48 @@
+package service
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+const smokeAIDebugLogDir = "/www/wwwroot/code/wx_service/runtime_logs"
+
+func smokeAIDebugLogPath(now time.Time) string {
+	day := now.In(time.Local).Format("2006-01-02")
+	return filepath.Join(smokeAIDebugLogDir, fmt.Sprintf("smoke_ai_%s.log", day))
+}
+
+func appendSmokeAIDebugLog(scene string, payload map[string]interface{}) {
+	if payload == nil {
+		payload = map[string]interface{}{}
+	}
+	now := time.Now().In(time.Local)
+	payload["scene"] = scene
+	payload["ts"] = now.Format(time.RFC3339)
+
+	body, err := json.MarshalIndent(payload, "", "  ")
+	if err != nil {
+		log.Printf("[smoke_ai_debug] marshal failed scene=%s err=%v", scene, err)
+		return
+	}
+
+	if err := os.MkdirAll(smokeAIDebugLogDir, 0o755); err != nil {
+		log.Printf("[smoke_ai_debug] mkdir failed scene=%s err=%v", scene, err)
+		return
+	}
+
+	f, err := os.OpenFile(smokeAIDebugLogPath(now), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o644)
+	if err != nil {
+		log.Printf("[smoke_ai_debug] open failed scene=%s err=%v", scene, err)
+		return
+	}
+	defer f.Close()
+
+	if _, err := f.Write(append(body, '\n', '\n')); err != nil {
+		log.Printf("[smoke_ai_debug] write failed scene=%s err=%v", scene, err)
+	}
+}