feat(db): add pricing config fields to proxy_config table

- Add default_cost_multiplier field per app type
- Add pricing_model_source field (request/response)
- Add request_model field to proxy_request_logs table
- Implement schema migration v5

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

@@ -4,6 +4,7 @@
 
 use crate::error::AppError;
 use crate::proxy::types::*;
+use rust_decimal::Decimal;
 
 use super::super::{lock_conn, Database};
 
@@ -75,6 +76,101 @@ impl Database {
         Ok(())
     }
 
+    /// 获取默认成本倍率
+    pub async fn get_default_cost_multiplier(&self, app_type: &str) -> Result<String, AppError> {
+        let result = {
+            let conn = lock_conn!(self.conn);
+            conn.query_row(
+                "SELECT default_cost_multiplier FROM proxy_config WHERE app_type = ?1",
+                [app_type],
+                |row| row.get(0),
+            )
+        };
+
+        match result {
+            Ok(value) => Ok(value),
+            Err(rusqlite::Error::QueryReturnedNoRows) => {
+                self.init_proxy_config_rows().await?;
+                Ok("1".to_string())
+            }
+            Err(e) => Err(AppError::Database(e.to_string())),
+        }
+    }
+
+    /// 设置默认成本倍率
+    pub async fn set_default_cost_multiplier(
+        &self,
+        app_type: &str,
+        value: &str,
+    ) -> Result<(), AppError> {
+        let trimmed = value.trim();
+        if trimmed.is_empty() {
+            return Err(AppError::InvalidInput("倍率不能为空".to_string()));
+        }
+        trimmed
+            .parse::<Decimal>()
+            .map_err(|e| AppError::InvalidInput(format!("无效倍率: {value} - {e}")))?;
+
+        let conn = lock_conn!(self.conn);
+        conn.execute(
+            "UPDATE proxy_config SET
+                default_cost_multiplier = ?2,
+                updated_at = datetime('now')
+             WHERE app_type = ?1",
+            rusqlite::params![app_type, trimmed],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
+
+        Ok(())
+    }
+
+    /// 获取计费模式来源
+    pub async fn get_pricing_model_source(&self, app_type: &str) -> Result<String, AppError> {
+        let result = {
+            let conn = lock_conn!(self.conn);
+            conn.query_row(
+                "SELECT pricing_model_source FROM proxy_config WHERE app_type = ?1",
+                [app_type],
+                |row| row.get(0),
+            )
+        };
+
+        match result {
+            Ok(value) => Ok(value),
+            Err(rusqlite::Error::QueryReturnedNoRows) => {
+                self.init_proxy_config_rows().await?;
+                Ok("response".to_string())
+            }
+            Err(e) => Err(AppError::Database(e.to_string())),
+        }
+    }
+
+    /// 设置计费模式来源
+    pub async fn set_pricing_model_source(
+        &self,
+        app_type: &str,
+        value: &str,
+    ) -> Result<(), AppError> {
+        let trimmed = value.trim();
+        if !matches!(trimmed, "response" | "request") {
+            return Err(AppError::InvalidInput(format!(
+                "无效计费模式: {value}"
+            )));
+        }
+
+        let conn = lock_conn!(self.conn);
+        conn.execute(
+            "UPDATE proxy_config SET
+                pricing_model_source = ?2,
+                updated_at = datetime('now')
+             WHERE app_type = ?1",
+            rusqlite::params![app_type, trimmed],
+        )
+        .map_err(|e| AppError::Database(e.to_string()))?;
+
+        Ok(())
+    }
+
     /// 获取应用级代理配置
     pub async fn get_proxy_config_for_app(
         &self,
@@ -662,3 +758,56 @@ impl Database {
         Ok(())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::database::Database;
+    use crate::error::AppError;
+
+    #[tokio::test]
+    async fn test_default_cost_multiplier_round_trip() -> Result<(), AppError> {
+        let db = Database::memory()?;
+
+        let default = db.get_default_cost_multiplier("claude").await?;
+        assert_eq!(default, "1");
+
+        db.set_default_cost_multiplier("claude", "1.5").await?;
+        let updated = db.get_default_cost_multiplier("claude").await?;
+        assert_eq!(updated, "1.5");
+
+        Ok(())
+    }
+
+    #[tokio::test]
+    async fn test_default_cost_multiplier_validation() -> Result<(), AppError> {
+        let db = Database::memory()?;
+
+        let err = db
+            .set_default_cost_multiplier("claude", "not-a-number")
+            .await
+            .unwrap_err();
+        assert!(matches!(err, AppError::InvalidInput(_)));
+
+        Ok(())
+    }
+
+    #[tokio::test]
+    async fn test_pricing_model_source_round_trip_and_validation() -> Result<(), AppError> {
+        let db = Database::memory()?;
+
+        let default = db.get_pricing_model_source("claude").await?;
+        assert_eq!(default, "response");
+
+        db.set_pricing_model_source("claude", "request").await?;
+        let updated = db.get_pricing_model_source("claude").await?;
+        assert_eq!(updated, "request");
+
+        let err = db
+            .set_pricing_model_source("claude", "invalid")
+            .await
+            .unwrap_err();
+        assert!(matches!(err, AppError::InvalidInput(_)));
+
+        Ok(())
+    }
+}

src-tauri/src/database/mod.rs

@@ -47,7 +47,7 @@ const DB_BACKUP_RETAIN: usize = 10;
 
 /// 当前 Schema 版本号
 /// 每次修改表结构时递增，并在 schema.rs 中添加相应的迁移逻辑
-pub(crate) const SCHEMA_VERSION: i32 = 4;
+pub(crate) const SCHEMA_VERSION: i32 = 5;
 
 /// 安全地序列化 JSON，避免 unwrap panic
 pub(crate) fn to_json_string<T: Serialize>(value: &T) -> Result<String, AppError> {

src-tauri/src/database/schema.rs

@@ -120,6 +120,8 @@ impl Database {
             circuit_failure_threshold INTEGER NOT NULL DEFAULT 4, circuit_success_threshold INTEGER NOT NULL DEFAULT 2,
             circuit_timeout_seconds INTEGER NOT NULL DEFAULT 60, circuit_error_rate_threshold REAL NOT NULL DEFAULT 0.6,
             circuit_min_requests INTEGER NOT NULL DEFAULT 10,
+            default_cost_multiplier TEXT NOT NULL DEFAULT '1',
+            pricing_model_source TEXT NOT NULL DEFAULT 'response',
             created_at TEXT NOT NULL DEFAULT (datetime('now')), updated_at TEXT NOT NULL DEFAULT (datetime('now'))
         )", []).map_err(|e| AppError::Database(e.to_string()))?;
 
@@ -170,6 +172,7 @@ impl Database {
         // 10. Proxy Request Logs 表
         conn.execute("CREATE TABLE IF NOT EXISTS proxy_request_logs (
             request_id TEXT PRIMARY KEY, provider_id TEXT NOT NULL, app_type TEXT NOT NULL, model TEXT NOT NULL,
+            request_model TEXT,
             input_tokens INTEGER NOT NULL DEFAULT 0, output_tokens INTEGER NOT NULL DEFAULT 0,
             cache_read_tokens INTEGER NOT NULL DEFAULT 0, cache_creation_tokens INTEGER NOT NULL DEFAULT 0,
             input_cost_usd TEXT NOT NULL DEFAULT '0', output_cost_usd TEXT NOT NULL DEFAULT '0',
@@ -352,6 +355,11 @@ impl Database {
                         Self::migrate_v3_to_v4(conn)?;
                         Self::set_user_version(conn, 4)?;
                     }
+                    4 => {
+                        log::info!("迁移数据库从 v4 到 v5（计费模式支持）");
+                        Self::migrate_v4_to_v5(conn)?;
+                        Self::set_user_version(conn, 5)?;
+                    }
                     _ => {
                         return Err(AppError::Database(format!(
                             "未知的数据库版本 {version}，无法迁移到 {SCHEMA_VERSION}"
@@ -521,6 +529,7 @@ impl Database {
         // proxy_request_logs 表
         conn.execute("CREATE TABLE IF NOT EXISTS proxy_request_logs (
             request_id TEXT PRIMARY KEY, provider_id TEXT NOT NULL, app_type TEXT NOT NULL, model TEXT NOT NULL,
+            request_model TEXT,
             input_tokens INTEGER NOT NULL DEFAULT 0, output_tokens INTEGER NOT NULL DEFAULT 0,
             cache_read_tokens INTEGER NOT NULL DEFAULT 0, cache_creation_tokens INTEGER NOT NULL DEFAULT 0,
             input_cost_usd TEXT NOT NULL DEFAULT '0', output_cost_usd TEXT NOT NULL DEFAULT '0',
@@ -677,6 +686,8 @@ impl Database {
             circuit_failure_threshold INTEGER NOT NULL DEFAULT 4, circuit_success_threshold INTEGER NOT NULL DEFAULT 2,
             circuit_timeout_seconds INTEGER NOT NULL DEFAULT 60, circuit_error_rate_threshold REAL NOT NULL DEFAULT 0.6,
             circuit_min_requests INTEGER NOT NULL DEFAULT 10,
+            default_cost_multiplier TEXT NOT NULL DEFAULT '1',
+            pricing_model_source TEXT NOT NULL DEFAULT 'response',
             created_at TEXT NOT NULL DEFAULT (datetime('now')), updated_at TEXT NOT NULL DEFAULT (datetime('now'))
         )", [])?;
 
@@ -879,6 +890,30 @@ impl Database {
         Ok(())
     }
 
+    /// v4 -> v5 迁移：新增计费模式配置与请求模型字段
+    fn migrate_v4_to_v5(conn: &Connection) -> Result<(), AppError> {
+        if Self::table_exists(conn, "proxy_config")? {
+            Self::add_column_if_missing(
+                conn,
+                "proxy_config",
+                "default_cost_multiplier",
+                "TEXT NOT NULL DEFAULT '1'",
+            )?;
+            Self::add_column_if_missing(
+                conn,
+                "proxy_config",
+                "pricing_model_source",
+                "TEXT NOT NULL DEFAULT 'response'",
+            )?;
+        }
+        if Self::table_exists(conn, "proxy_request_logs")? {
+            Self::add_column_if_missing(conn, "proxy_request_logs", "request_model", "TEXT")?;
+        }
+
+        log::info!("v4 -> v5 迁移完成：已添加计费模式与请求模型字段");
+        Ok(())
+    }
+
     /// 插入默认模型定价数据
     /// 格式: (model_id, display_name, input, output, cache_read, cache_creation)
     /// 注意: model_id 使用短横线格式（如 claude-haiku-4-5），与 API 返回的模型名称标准化后一致

src-tauri/src/database/tests.rs

@@ -151,7 +151,7 @@ fn normalize_default(default: &Option<String>) -> Option<String> {
 }
 
 #[test]
-fn migration_sets_user_version_when_missing() {
+fn schema_migration_sets_user_version_when_missing() {
     let conn = Connection::open_in_memory().expect("open memory db");
 
     Database::create_tables_on_conn(&conn).expect("create tables");
@@ -169,7 +169,7 @@ fn migration_sets_user_version_when_missing() {
 }
 
 #[test]
-fn migration_rejects_future_version() {
+fn schema_migration_rejects_future_version() {
     let conn = Connection::open_in_memory().expect("open memory db");
     Database::create_tables_on_conn(&conn).expect("create tables");
     Database::set_user_version(&conn, SCHEMA_VERSION + 1).expect("set future version");
@@ -183,7 +183,7 @@ fn migration_rejects_future_version() {
 }
 
 #[test]
-fn migration_adds_missing_columns_for_providers() {
+fn schema_migration_adds_missing_columns_for_providers() {
     let conn = Connection::open_in_memory().expect("open memory db");
 
     // 创建旧版 providers 表，缺少新增列
@@ -224,7 +224,7 @@ fn migration_adds_missing_columns_for_providers() {
 }
 
 #[test]
-fn migration_aligns_column_defaults_and_types() {
+fn schema_migration_aligns_column_defaults_and_types() {
     let conn = Connection::open_in_memory().expect("open memory db");
     conn.execute_batch(LEGACY_SCHEMA_SQL)
         .expect("seed old schema");
@@ -268,7 +268,73 @@ fn migration_aligns_column_defaults_and_types() {
 }
 
 #[test]
-fn create_tables_repairs_legacy_proxy_config_singleton_to_per_app() {
+fn schema_create_tables_include_pricing_model_columns() {
+    let conn = Connection::open_in_memory().expect("open memory db");
+    Database::create_tables_on_conn(&conn).expect("create tables");
+
+    let multiplier = get_column_info(&conn, "proxy_config", "default_cost_multiplier");
+    assert_eq!(multiplier.r#type, "TEXT");
+    assert_eq!(multiplier.notnull, 1);
+    assert_eq!(
+        normalize_default(&multiplier.default).as_deref(),
+        Some("1")
+    );
+
+    let pricing_source = get_column_info(&conn, "proxy_config", "pricing_model_source");
+    assert_eq!(pricing_source.r#type, "TEXT");
+    assert_eq!(pricing_source.notnull, 1);
+    assert_eq!(
+        normalize_default(&pricing_source.default).as_deref(),
+        Some("response")
+    );
+
+    let request_model = get_column_info(&conn, "proxy_request_logs", "request_model");
+    assert_eq!(request_model.r#type, "TEXT");
+    assert_eq!(request_model.notnull, 0);
+}
+
+#[test]
+fn schema_migration_v4_adds_pricing_model_columns() {
+    let conn = Connection::open_in_memory().expect("open memory db");
+    conn.execute_batch(
+        r#"
+        CREATE TABLE proxy_config (app_type TEXT PRIMARY KEY);
+        CREATE TABLE proxy_request_logs (request_id TEXT PRIMARY KEY, model TEXT NOT NULL);
+        "#,
+    )
+    .expect("seed v4 schema");
+
+    Database::set_user_version(&conn, 4).expect("set user_version=4");
+    Database::apply_schema_migrations_on_conn(&conn).expect("apply migrations");
+
+    let multiplier = get_column_info(&conn, "proxy_config", "default_cost_multiplier");
+    assert_eq!(multiplier.r#type, "TEXT");
+    assert_eq!(multiplier.notnull, 1);
+    assert_eq!(
+        normalize_default(&multiplier.default).as_deref(),
+        Some("1")
+    );
+
+    let pricing_source = get_column_info(&conn, "proxy_config", "pricing_model_source");
+    assert_eq!(pricing_source.r#type, "TEXT");
+    assert_eq!(pricing_source.notnull, 1);
+    assert_eq!(
+        normalize_default(&pricing_source.default).as_deref(),
+        Some("response")
+    );
+
+    let request_model = get_column_info(&conn, "proxy_request_logs", "request_model");
+    assert_eq!(request_model.r#type, "TEXT");
+    assert_eq!(request_model.notnull, 0);
+
+    assert_eq!(
+        Database::get_user_version(&conn).expect("version after migration"),
+        SCHEMA_VERSION
+    );
+}
+
+#[test]
+fn schema_create_tables_repairs_legacy_proxy_config_singleton_to_per_app() {
     let conn = Connection::open_in_memory().expect("open memory db");
 
     // 模拟测试版 v2：user_version=2，但 proxy_config 仍是单例结构（无 app_type）
@@ -433,7 +499,7 @@ fn migration_from_v3_8_schema_v1_to_current_schema_v3() {
 }
 
 #[test]
-fn dry_run_does_not_write_to_disk() {
+fn schema_dry_run_does_not_write_to_disk() {
     // Create minimal valid config for migration
     let mut apps = HashMap::new();
     apps.insert("claude".to_string(), ProviderManager::default());
@@ -507,7 +573,7 @@ fn dry_run_validates_schema_compatibility() {
 }
 
 #[test]
-fn model_pricing_is_seeded_on_init() {
+fn schema_model_pricing_is_seeded_on_init() {
     let db = Database::memory().expect("create memory db");
 
     let conn = db.conn.lock().expect("lock conn");

src-tauri/tests/proxy_commands.rs

@@ -0,0 +1,68 @@
+use cc_switch_lib::{
+    get_default_cost_multiplier_test_hook, get_pricing_model_source_test_hook,
+    set_default_cost_multiplier_test_hook, set_pricing_model_source_test_hook, AppError,
+};
+
+#[path = "support.rs"]
+mod support;
+use support::{create_test_state, ensure_test_home, reset_test_fs, test_mutex};
+
+#[tokio::test]
+async fn default_cost_multiplier_commands_round_trip() {
+    let _guard = test_mutex().lock().expect("acquire test mutex");
+    reset_test_fs();
+    let _home = ensure_test_home();
+
+    let state = create_test_state().expect("create test state");
+
+    let default = get_default_cost_multiplier_test_hook(&state, "claude")
+        .await
+        .expect("read default multiplier");
+    assert_eq!(default, "1");
+
+    set_default_cost_multiplier_test_hook(&state, "claude", "1.5")
+        .await
+        .expect("set multiplier");
+    let updated = get_default_cost_multiplier_test_hook(&state, "claude")
+        .await
+        .expect("read updated multiplier");
+    assert_eq!(updated, "1.5");
+
+    let err = set_default_cost_multiplier_test_hook(&state, "claude", "not-a-number")
+        .await
+        .expect_err("invalid multiplier should error");
+    match err {
+        AppError::InvalidInput(_) => {}
+        other => panic!("expected invalid input error, got {other:?}"),
+    }
+}
+
+#[tokio::test]
+async fn pricing_model_source_commands_round_trip() {
+    let _guard = test_mutex().lock().expect("acquire test mutex");
+    reset_test_fs();
+    let _home = ensure_test_home();
+
+    let state = create_test_state().expect("create test state");
+
+    let default = get_pricing_model_source_test_hook(&state, "claude")
+        .await
+        .expect("read default pricing model source");
+    assert_eq!(default, "response");
+
+    set_pricing_model_source_test_hook(&state, "claude", "request")
+        .await
+        .expect("set pricing model source");
+    let updated = get_pricing_model_source_test_hook(&state, "claude")
+        .await
+        .expect("read updated pricing model source");
+    assert_eq!(updated, "request");
+
+    let err = set_pricing_model_source_test_hook(&state, "claude", "invalid")
+        .await
+        .expect_err("invalid pricing model source should error");
+    match err {
+        AppError::InvalidInput(_) => {}
+        other => panic!("expected invalid input error, got {other:?}"),
+    }
+}

tests/components/GlobalProxySettings.test.tsx

@@ -0,0 +1,83 @@
+import { render, screen, fireEvent, waitFor } from "@testing-library/react";
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { GlobalProxySettings } from "@/components/settings/GlobalProxySettings";
+
+vi.mock("react-i18next", () => ({
+  useTranslation: () => ({ t: (key: string) => key }),
+}));
+
+const mutateAsyncMock = vi.fn();
+const testMutateAsyncMock = vi.fn();
+const scanMutateAsyncMock = vi.fn();
+
+vi.mock("@/hooks/useGlobalProxy", () => ({
+  useGlobalProxyUrl: () => ({ data: "http://127.0.0.1:7890", isLoading: false }),
+  useSetGlobalProxyUrl: () => ({
+    mutateAsync: mutateAsyncMock,
+    isPending: false,
+  }),
+  useTestProxy: () => ({
+    mutateAsync: testMutateAsyncMock,
+    isPending: false,
+  }),
+  useScanProxies: () => ({
+    mutateAsync: scanMutateAsyncMock,
+    isPending: false,
+  }),
+}));
+
+describe("GlobalProxySettings", () => {
+  beforeEach(() => {
+    mutateAsyncMock.mockReset();
+    testMutateAsyncMock.mockReset();
+    scanMutateAsyncMock.mockReset();
+  });
+
+  it("renders proxy URL input with saved value", async () => {
+    render(<GlobalProxySettings />);
+
+    const urlInput = screen.getByPlaceholderText(
+      "http://127.0.0.1:7890 / socks5://127.0.0.1:1080",
+    );
+    // URL 对象会在末尾添加斜杠
+    await waitFor(() =>
+      expect(urlInput).toHaveValue("http://127.0.0.1:7890/"),
+    );
+  });
+
+  it("saves proxy URL when save button is clicked", async () => {
+    render(<GlobalProxySettings />);
+
+    const urlInput = screen.getByPlaceholderText(
+      "http://127.0.0.1:7890 / socks5://127.0.0.1:1080",
+    );
+
+    fireEvent.change(urlInput, { target: { value: "http://localhost:8080" } });
+
+    const saveButton = screen.getByRole("button", { name: "common.save" });
+    fireEvent.click(saveButton);
+
+    await waitFor(() => expect(mutateAsyncMock).toHaveBeenCalled());
+    // 没有用户名时，URL 不经过 URL 对象解析，所以没有尾部斜杠
+    expect(mutateAsyncMock).toHaveBeenCalledWith("http://localhost:8080");
+  });
+
+  it("clears proxy URL when clear button is clicked", async () => {
+    render(<GlobalProxySettings />);
+
+    const urlInput = screen.getByPlaceholderText(
+      "http://127.0.0.1:7890 / socks5://127.0.0.1:1080",
+    );
+
+    // Wait for initial value to load
+    await waitFor(() =>
+      expect(urlInput).toHaveValue("http://127.0.0.1:7890/"),
+    );
+
+    // Click clear button
+    const clearButton = screen.getByTitle("settings.globalProxy.clear");
+    fireEvent.click(clearButton);
+
+    expect(urlInput).toHaveValue("");
+  });
+});

tests/setupGlobals.ts

@@ -0,0 +1,26 @@
+const storage = new Map<string, string>();
+
+if (
+  typeof globalThis.localStorage === "undefined" ||
+  typeof globalThis.localStorage?.getItem !== "function"
+) {
+  Object.defineProperty(globalThis, "localStorage", {
+    value: {
+      getItem: (key: string) => storage.get(key) ?? null,
+      setItem: (key: string, value: string) => {
+        storage.set(key, String(value));
+      },
+      removeItem: (key: string) => {
+        storage.delete(key);
+      },
+      clear: () => {
+        storage.clear();
+      },
+      key: (index: number) => Array.from(storage.keys())[index] ?? null,
+      get length() {
+        return storage.size;
+      },
+    },
+    configurable: true,
+  });
+}