Feat/provider individual config (#663)

* refactor(ui): simplify UpdateBadge to minimal dot indicator

* feat(provider): add individual test and proxy config for providers

Add support for provider-specific model test and proxy configurations:

- Add ProviderTestConfig and ProviderProxyConfig types in Rust and TypeScript
- Create ProviderAdvancedConfig component with collapsible panels
- Update stream_check service to merge provider config with global config
- Proxy config UI follows global proxy style (single URL input)

Provider-level configs stored in meta field, no database schema changes needed.

* feat(ui): add failover toggle and improve proxy controls

- Add FailoverToggle component with slide animation
- Simplify ProxyToggle style to match FailoverToggle
- Add usage statistics button when proxy is active
- Fix i18n parameter passing for failover messages
- Add missing failover translation keys (inQueue, addQueue, priority)
- Replace AboutSection icon with app logo

* fix(proxy): support system proxy fallback and provider-level proxy config

- Remove no_proxy() calls in http_client.rs to allow system proxy fallback
- Add get_for_provider() to build HTTP client with provider-specific proxy
- Update forwarder.rs and stream_check.rs to use provider proxy config
- Fix EditProviderDialog.tsx to include provider.meta in useMemo deps
- Add useEffect in ProviderAdvancedConfig.tsx to sync expand state

Fixes #636
Fixes #583

* fix(ui): sync toast theme with app setting

* feat(settings): add log config management

Fixes #612
Fixes #514

* fix(proxy): increase request body size limit to 200MB

Fixes #666

* docs(proxy): update timeout config descriptions and defaults

Fixes #612

* fix(proxy): filter x-goog-api-key header to prevent duplication

* fix(proxy): prevent proxy recursion when system proxy points to localhost

Detect if HTTP_PROXY, HTTPS_PROXY, or ALL_PROXY environment variables
point to loopback addresses (localhost, 127.0.0.1), and bypass system
proxy in such cases to avoid infinite request loops.

* fix(i18n): add providerAdvanced i18n keys and fix failover toast parameter

- Add providerAdvanced.* i18n keys to en.json, zh.json, and ja.json
- Fix failover toggleFailed toast to pass detail parameter
- Remove Chinese fallback text from UI for English/Japanese users

* fix(tray): restore tray-provider events and enable Auto failover properly

- Emit provider-switched event on tray provider click (backward compatibility)
- Auto button now: starts proxy, takes over live config, enables failover

* fix(log): enable dynamic log level and single file mode

- Initialize log at Trace level for dynamic adjustment
- Change rotation strategy to KeepSome(1) for single file
- Set max file size to 1GB
- Delete old log file on startup for clean start

* fix(tray): fix clippy uninlined format args warning

Use inline format arguments: {app_type_str} instead of {}

* fix(provider): allow typing :// in endpoint URL inputs

Change input type from "url" to "text" to prevent browser
URL validation from blocking :// input.

Closes #681

* fix(stream-check): use Gemini native streaming API format

- Change endpoint from OpenAI-compatible to native streamGenerateContent
- Add alt=sse parameter for SSE format response
- Use x-goog-api-key header instead of Bearer token
- Convert request body to Gemini contents/parts format

* feat(proxy): add request logging for debugging

Add debug logs for outgoing requests including URL and body content
with byte size, matching the existing response logging format.

* fix(log): prevent usize underflow in KeepSome rotation strategy

KeepSome(n) internally computes n-2, so n=1 causes underflow.
Use KeepSome(2) as the minimum safe value.

src-tauri/src/lib.rs

@@ -266,33 +266,41 @@ pub fn run() {
                     log::warn!("初始化 Updater 插件失败，已跳过：{e}");
                 }
             }
-            // 初始化日志（Debug 和 Release 模式都启用 Info 级别）
-            // 日志同时输出到控制台和文件（<app_config_dir>/logs/；若设置了覆盖则使用覆盖目录）
+            // 初始化日志（单文件输出到 <app_config_dir>/logs/cc-switch.log）
             {
                 use tauri_plugin_log::{RotationStrategy, Target, TargetKind, TimezoneStrategy};
 
                 let log_dir = panic_hook::get_log_dir();
 
+                // 确保日志目录存在
+                if let Err(e) = std::fs::create_dir_all(&log_dir) {
+                    eprintln!("创建日志目录失败: {e}");
+                }
+
+                // 启动时删除旧日志文件，实现单文件覆盖效果
+                let log_file_path = log_dir.join("cc-switch.log");
+                let _ = std::fs::remove_file(&log_file_path);
+
                 app.handle().plugin(
                     tauri_plugin_log::Builder::default()
-                        .level(log::LevelFilter::Info)
+                        // 初始化为 Trace，允许后续通过 log::set_max_level() 动态调整级别
+                        .level(log::LevelFilter::Trace)
                         .targets([
-                            // 输出到控制台
                             Target::new(TargetKind::Stdout),
-                            // 输出到日志文件
                             Target::new(TargetKind::Folder {
                                 path: log_dir,
                                 file_name: Some("cc-switch".into()),
                             }),
                         ])
-                        .rotation_strategy(RotationStrategy::KeepAll)
-                        .max_file_size(5_000_000) // 5MB 单文件上限
+                        // 单文件模式：启动时删除旧文件，达到大小时轮转
+                        // 注意：KeepSome(n) 内部会做 n-2 运算，n=1 会导致 usize 下溢
+                        // KeepSome(2) 是最小安全值，表示不保留轮转文件
+                        .rotation_strategy(RotationStrategy::KeepSome(2))
+                        // 单文件大小限制 1GB
+                        .max_file_size(1024 * 1024 * 1024)
                         .timezone_strategy(TimezoneStrategy::UseLocal)
                         .build(),
                 )?;
-
-                // 清理旧日志文件，只保留最近 2 个
-                panic_hook::cleanup_old_logs();
             }
 
             // 初始化数据库
@@ -660,6 +668,19 @@ pub fn run() {
             // 将同一个实例注入到全局状态，避免重复创建导致的不一致
             app.manage(app_state);
 
+            // 从数据库加载日志配置并应用
+            {
+                let db = &app.state::<AppState>().db;
+                if let Ok(log_config) = db.get_log_config() {
+                    log::set_max_level(log_config.to_level_filter());
+                    log::info!(
+                        "已加载日志配置: enabled={}, level={}",
+                        log_config.enabled,
+                        log_config.level
+                    );
+                }
+            }
+
             // 初始化 SkillService
             let skill_service = SkillService::new();
             app.manage(commands::skill::SkillServiceState(Arc::new(skill_service)));
@@ -757,6 +778,8 @@ pub fn run() {
             commands::save_settings,
             commands::get_rectifier_config,
             commands::set_rectifier_config,
+            commands::get_log_config,
+            commands::set_log_config,
             commands::restart_app,
             commands::check_for_updates,
             commands::is_portable_mode,