feat(logging): add crash logging and improve log management (#562)

* feat(logging): add crash logging and improve log management

- Add panic hook to capture crash info to ~/.cc-switch/crash.log
  - Records timestamp, app version, OS/arch, thread info
  - Full stack trace with force_capture for release builds
  - Safe error handling (no nested panics)

- Enable logging for both Debug and Release builds
  - Info level for all builds
  - Output to console and ~/.cc-switch/logs/
  - 5MB max file size with rotation

- Add log cleanup on startup
  - Keep only 2 most recent log files
  - Works on all platforms

- Change panic strategy from "abort" to "unwind"
  - Required for backtrace capture in release builds

* fix(logging): use OnceLock for config dir and add URL redaction

- Use OnceLock to support custom config directory override for crash.log
- Add redact_url_for_log() to protect sensitive URL parameters in logs
- Change verbose deep link logs from info to debug level
- Move Store refresh before panic_hook init to ensure correct path

---------

Co-authored-by: Jason <farion1231@gmail.com>

src-tauri/src/lib.rs

@@ -13,6 +13,7 @@ mod gemini_config;
 mod gemini_mcp;
 mod init_status;
 mod mcp;
+mod panic_hook;
 mod prompt;
 mod prompt_files;
 mod provider;
@@ -54,6 +55,37 @@ use tauri::tray::{TrayIconBuilder, TrayIconEvent};
 use tauri::RunEvent;
 use tauri::{Emitter, Manager};
 
+fn redact_url_for_log(url_str: &str) -> String {
+    match url::Url::parse(url_str) {
+        Ok(url) => {
+            let mut output = format!("{}://", url.scheme());
+            if let Some(host) = url.host_str() {
+                output.push_str(host);
+            }
+            output.push_str(url.path());
+
+            let mut keys: Vec<String> = url.query_pairs().map(|(k, _)| k.to_string()).collect();
+            keys.sort();
+            keys.dedup();
+
+            if !keys.is_empty() {
+                output.push_str("?[keys:");
+                output.push_str(&keys.join(","));
+                output.push(']');
+            }
+
+            output
+        }
+        Err(_) => {
+            let base = url_str.split('#').next().unwrap_or(url_str);
+            match base.split_once('?') {
+                Some((prefix, _)) => format!("{prefix}?[redacted]"),
+                None => base.to_string(),
+            }
+        }
+    }
+}
+
 /// 统一处理 ccswitch:// 深链接 URL
 ///
 /// - 解析 URL
@@ -69,7 +101,9 @@ fn handle_deeplink_url(
         return false;
     }
 
-    log::info!("✓ Deep link URL detected from {source}: {url_str}");
+    let redacted_url = redact_url_for_log(url_str);
+    log::info!("✓ Deep link URL detected from {source}: {redacted_url}");
+    log::debug!("Deep link URL (raw) from {source}: {url_str}");
 
     match crate::deeplink::parse_deeplink_url(url_str) {
         Ok(request) => {
@@ -150,15 +184,18 @@ fn macos_tray_icon() -> Option<Image<'static>> {
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
+    // 设置 panic hook，在应用崩溃时记录日志到 <app_config_dir>/crash.log（默认 ~/.cc-switch/crash.log）
+    panic_hook::setup_panic_hook();
+
     let mut builder = tauri::Builder::default();
 
     #[cfg(any(target_os = "macos", target_os = "windows", target_os = "linux"))]
     {
         builder = builder.plugin(tauri_plugin_single_instance::init(|app, args, _cwd| {
             log::info!("=== Single Instance Callback Triggered ===");
-            log::info!("Args count: {}", args.len());
+            log::debug!("Args count: {}", args.len());
             for (i, arg) in args.iter().enumerate() {
-                log::info!("  arg[{i}]: {arg}");
+                log::debug!("  arg[{i}]: {}", redact_url_for_log(arg));
             }
 
             // Check for deep link URL in args (mainly for Windows/Linux command line)
@@ -212,6 +249,10 @@ pub fn run() {
         .plugin(tauri_plugin_opener::init())
         .plugin(tauri_plugin_store::Builder::new().build())
         .setup(|app| {
+            // 预先刷新 Store 覆盖配置，确保后续路径读取正确（日志/数据库等）
+            app_store::refresh_app_config_dir_override(app.handle());
+            panic_hook::init_app_config_dir(crate::config::get_app_config_dir());
+
             // 注册 Updater 插件（桌面端）
             #[cfg(desktop)]
             {
@@ -223,17 +264,34 @@ pub fn run() {
                     log::warn!("初始化 Updater 插件失败，已跳过：{e}");
                 }
             }
-            // 初始化日志
-            if cfg!(debug_assertions) {
+            // 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）
+            {
+                use tauri_plugin_log::{RotationStrategy, Target, TargetKind, TimezoneStrategy};
+
+                let log_dir = panic_hook::get_log_dir();
+
                 app.handle().plugin(
                     tauri_plugin_log::Builder::default()
                         .level(log::LevelFilter::Info)
+                        .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
+                        .timezone_strategy(TimezoneStrategy::UseLocal)
                         .build(),
                 )?;
-            }
 
-            // 预先刷新 Store 覆盖配置，确保 AppState 初始化时可读取到最新路径
-            app_store::refresh_app_config_dir_override(app.handle());
+                // 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
             let app_config_dir = crate::config::get_app_config_dir();
@@ -529,7 +587,7 @@ pub fn run() {
 
                     for (i, url) in urls.iter().enumerate() {
                         let url_str = url.as_str();
-                        log::info!("  URL[{i}]: {url_str}");
+                        log::debug!("  URL[{i}]: {}", redact_url_for_log(url_str));
 
                         if handle_deeplink_url(&app_handle, url_str, true, "on_open_url") {
                             break; // Process only first ccswitch:// URL