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internal/backend/server/config/store.go

@@ -2,6 +2,7 @@ package config
 
 import (
 	"context"
+	"cursor/internal/securefile"
 	"errors"
 	"fmt"
 	"os"
@@ -75,7 +76,7 @@ func (store *Store) Load(_ context.Context) (Config, error) {
 			if err := store.saveLocked(defaultConfig); err != nil {
 				return DefaultConfig(), err
 			}
-			return defaultConfig, nil
+			return withRevision(defaultConfig), nil
 		}
 		return DefaultConfig(), fmt.Errorf("读取用户配置失败: %w", err)
 	}
@@ -93,7 +94,7 @@ func (store *Store) Load(_ context.Context) (Config, error) {
 			return DefaultConfig(), err
 		}
 	}
-	return normalized, nil
+	return withRevision(normalized), nil
 }
 
 func (store *Store) Save(_ context.Context, cfg Config) (Config, error) {
@@ -109,10 +110,20 @@ func (store *Store) Save(_ context.Context, cfg Config) (Config, error) {
 	store.mu.Lock()
 	defer store.mu.Unlock()
 
+	if cfg.Revision != "" {
+		existing, err := store.readCurrentLocked()
+		if err != nil {
+			return Config{}, err
+		}
+		if withRevision(existing).Revision != cfg.Revision {
+			return Config{}, ErrConfigConflict
+		}
+		normalized.LastAgentModelHash = existing.LastAgentModelHash
+	}
 	if err := store.saveLocked(normalized); err != nil {
 		return Config{}, err
 	}
-	return normalized, nil
+	return withRevision(normalized), nil
 }
 
 func (store *Store) saveLocked(normalized Config) error {
@@ -125,11 +136,7 @@ func (store *Store) saveLocked(normalized Config) error {
 		return fmt.Errorf("序列化用户配置失败: %w", err)
 	}
 
-	tempPath := store.path + ".tmp"
-	if err := writeFileSync(tempPath, data); err != nil {
-		return fmt.Errorf("写入临时配置失败: %w", err)
-	}
-	if err := os.Rename(tempPath, store.path); err != nil {
+	if err := securefile.Write(store.path, data); err != nil {
 		return fmt.Errorf("保存用户配置失败: %w", err)
 	}
 	return nil
@@ -181,3 +188,31 @@ func yamlHasKey(raw []byte, key string) bool {
 	}
 	return false
 }
+
+func (store *Store) readCurrentLocked() (Config, error) {
+	data, err := os.ReadFile(store.path)
+	if errors.Is(err, os.ErrNotExist) {
+		return DefaultConfig(), nil
+	}
+	if err != nil {
+		return Config{}, err
+	}
+	var current Config
+	if err = yaml.Unmarshal(data, &current); err != nil {
+		return Config{}, err
+	}
+	return NormalizeConfig(current)
+}
+func (store *Store) updateLastAgentModelHash(value string) (Config, error) {
+	store.mu.Lock()
+	defer store.mu.Unlock()
+	cfg, err := store.readCurrentLocked()
+	if err != nil {
+		return Config{}, err
+	}
+	cfg.LastAgentModelHash = value
+	if err = store.saveLocked(cfg); err != nil {
+		return Config{}, err
+	}
+	return withRevision(cfg), nil
+}