fix(pricing): align backfill cost calculation with real-time logic

- Fix backfill to deduct cache_read_tokens from input (avoid double billing)
- Apply multiplier only to total cost, not to each item
- Add multiplier display in request detail panel with i18n support
- Use AppError::localized for backend error messages
- Fix init_proxy_config_rows to use per-app default values
- Fix silent failure in set_default_cost_multiplier/set_pricing_model_source
- Add clippy allow annotation for test mutex across await

src-tauri/src/database/dao/proxy.rs

@@ -105,11 +105,22 @@ impl Database {
     ) -> Result<(), AppError> {
         let trimmed = value.trim();
         if trimmed.is_empty() {
-            return Err(AppError::InvalidInput("倍率不能为空".to_string()));
+            return Err(AppError::localized(
+                "error.multiplierEmpty",
+                "倍率不能为空",
+                "Multiplier cannot be empty",
+            ));
         }
-        trimmed
-            .parse::<Decimal>()
-            .map_err(|e| AppError::InvalidInput(format!("无效倍率: {value} - {e}")))?;
+        trimmed.parse::<Decimal>().map_err(|e| {
+            AppError::localized(
+                "error.invalidMultiplier",
+                format!("无效倍率: {value} - {e}"),
+                format!("Invalid multiplier: {value} - {e}"),
+            )
+        })?;
+
+        // 确保行存在
+        self.ensure_proxy_config_row_exists(app_type)?;
 
         let conn = lock_conn!(self.conn);
         conn.execute(
@@ -153,11 +164,16 @@ impl Database {
     ) -> Result<(), AppError> {
         let trimmed = value.trim();
         if !matches!(trimmed, "response" | "request") {
-            return Err(AppError::InvalidInput(format!(
-                "无效计费模式: {value}"
-            )));
+            return Err(AppError::localized(
+                "error.invalidPricingMode",
+                format!("无效计费模式: {value}"),
+                format!("Invalid pricing mode: {value}"),
+            ));
         }
 
+        // 确保行存在
+        self.ensure_proxy_config_row_exists(app_type)?;
+
         let conn = lock_conn!(self.conn);
         conn.execute(
             "UPDATE proxy_config SET
@@ -273,17 +289,90 @@ impl Database {
         Ok(())
     }
 
+    /// 确保指定 app_type 的 proxy_config 行存在（同步版本，用于 set_* 函数）
+    ///
+    /// 使用与 schema.rs seed 相同的 per-app 默认值
+    fn ensure_proxy_config_row_exists(&self, app_type: &str) -> Result<(), AppError> {
+        let conn = self
+            .conn
+            .lock()
+            .map_err(|e| AppError::Lock(e.to_string()))?;
+
+        // 根据 app_type 使用不同的默认值（与 schema.rs seed 保持一致）
+        let (retries, fb_timeout, idle_timeout, cb_fail, cb_succ, cb_timeout, cb_rate, cb_min) =
+            match app_type {
+                "claude" => (6, 90, 180, 8, 3, 90, 0.7, 15),
+                "codex" => (3, 60, 120, 4, 2, 60, 0.6, 10),
+                "gemini" => (5, 60, 120, 4, 2, 60, 0.6, 10),
+                _ => (3, 60, 120, 4, 2, 60, 0.6, 10), // 默认值
+            };
+
+        conn.execute(
+            "INSERT OR IGNORE INTO proxy_config (
+                app_type, max_retries,
+                streaming_first_byte_timeout, streaming_idle_timeout, non_streaming_timeout,
+                circuit_failure_threshold, circuit_success_threshold, circuit_timeout_seconds,
+                circuit_error_rate_threshold, circuit_min_requests
+            ) VALUES (?1, ?2, ?3, ?4, 600, ?5, ?6, ?7, ?8, ?9)",
+            rusqlite::params![
+                app_type,
+                retries,
+                fb_timeout,
+                idle_timeout,
+                cb_fail,
+                cb_succ,
+                cb_timeout,
+                cb_rate,
+                cb_min
+            ],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
+
+        Ok(())
+    }
+
     /// 初始化 proxy_config 表的三行数据
+    ///
+    /// 使用与 schema.rs seed 相同的 per-app 默认值
     async fn init_proxy_config_rows(&self) -> Result<(), AppError> {
         let conn = lock_conn!(self.conn);
 
-        for app_type in &["claude", "codex", "gemini"] {
-            conn.execute(
-                "INSERT OR IGNORE INTO proxy_config (app_type) VALUES (?1)",
-                [app_type],
-            )
-            .map_err(|e| AppError::Database(e.to_string()))?;
-        }
+        // 使用与 schema.rs seed 相同的 per-app 默认值
+        // claude: 更激进的重试和超时配置
+        conn.execute(
+            "INSERT OR IGNORE INTO proxy_config (
+                app_type, max_retries,
+                streaming_first_byte_timeout, streaming_idle_timeout, non_streaming_timeout,
+                circuit_failure_threshold, circuit_success_threshold, circuit_timeout_seconds,
+                circuit_error_rate_threshold, circuit_min_requests
+            ) VALUES ('claude', 6, 90, 180, 600, 8, 3, 90, 0.7, 15)",
+            [],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
+
+        // codex: 默认配置
+        conn.execute(
+            "INSERT OR IGNORE INTO proxy_config (
+                app_type, max_retries,
+                streaming_first_byte_timeout, streaming_idle_timeout, non_streaming_timeout,
+                circuit_failure_threshold, circuit_success_threshold, circuit_timeout_seconds,
+                circuit_error_rate_threshold, circuit_min_requests
+            ) VALUES ('codex', 3, 60, 120, 600, 4, 2, 60, 0.6, 10)",
+            [],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
+
+        // gemini: 稍高的重试次数
+        conn.execute(
+            "INSERT OR IGNORE INTO proxy_config (
+                app_type, max_retries,
+                streaming_first_byte_timeout, streaming_idle_timeout, non_streaming_timeout,
+                circuit_failure_threshold, circuit_success_threshold, circuit_timeout_seconds,
+                circuit_error_rate_threshold, circuit_min_requests
+            ) VALUES ('gemini', 5, 60, 120, 600, 4, 2, 60, 0.6, 10)",
+            [],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
 
         Ok(())
     }