feat: enhance desktop application startup diagnostics and logging

- Introduced a new `startup` module to capture and manage startup diagnostics.
- Implemented logging functionality with daily rotation and error reporting for application startup failures.
- Updated the main application run function to return an exit code based on startup success or failure.
- Added new dependencies for logging and diagnostics in `Cargo.toml`.
- Increased request timeout in the control service for improved stability.
- Expanded maximum search results in the federation module for better search capabilities.

Cargo.lock

@@ -97,6 +97,28 @@ dependencies = [
  "x11rb",
 ]
 
+[[package]]
+name = "ashpd"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2f3f79755c74fd155000314eb349864caa787c6592eace6c6882dad873d9c39"
+dependencies = [
+ "async-fs",
+ "async-net",
+ "enumflags2",
+ "futures-channel",
+ "futures-util",
+ "rand 0.9.5",
+ "raw-window-handle",
+ "serde",
+ "serde_repr",
+ "url",
+ "wayland-backend",
+ "wayland-client",
+ "wayland-protocols",
+ "zbus",
+]
+
 [[package]]
 name = "asn1-rs"
 version = "0.7.2"
@@ -186,6 +208,17 @@ dependencies = [
  "slab",
 ]
 
+[[package]]
+name = "async-fs"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8034a681df4aed8b8edbd7fbe472401ecf009251c8b40556b304567052e294c5"
+dependencies = [
+ "async-lock",
+ "blocking",
+ "futures-lite",
+]
+
 [[package]]
 name = "async-io"
 version = "2.6.0"
@@ -215,6 +248,17 @@ dependencies = [
  "pin-project-lite",
 ]
 
+[[package]]
+name = "async-net"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b948000fad4873c1c9339d60f2623323a0cfd3816e5181033c6a5cb68b2accf7"
+dependencies = [
+ "async-io",
+ "blocking",
+ "futures-lite",
+]
+
 [[package]]
 name = "async-process"
 version = "2.5.0"
@@ -1132,6 +1176,7 @@ version = "0.1.5-beta.1"
 dependencies = [
  "axum",
  "cursor-server",
+ "rfd",
  "serde",
  "serde_json",
  "tauri",
@@ -1145,6 +1190,7 @@ dependencies = [
  "tokio",
  "tokio-util",
  "tracing",
+ "tracing-appender",
  "tracing-subscriber",
  "url",
 ]
@@ -1520,6 +1566,15 @@ dependencies = [
  "syn 3.0.3",
 ]
 
+[[package]]
+name = "dlib"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab8ecd87370524b461f8557c119c405552c396ed91fc0a8eec68679eab26f94a"
+dependencies = [
+ "libloading",
+]
+
 [[package]]
 name = "dlopen2"
 version = "0.8.2"
@@ -4555,6 +4610,12 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "pollster"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f3a9f18d041e6d0e102a0a46750538147e5e8992d3b4873aaafee2520b00ce3"
+
 [[package]]
 name = "portable-atomic"
 version = "1.15.0"
@@ -5196,6 +5257,30 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "rfd"
+version = "0.15.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef2bee61e6cffa4635c72d7d81a84294e28f0930db0ddcb0f66d10244674ebed"
+dependencies = [
+ "ashpd",
+ "block2",
+ "dispatch2",
+ "js-sys",
+ "log",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-core-foundation",
+ "objc2-foundation",
+ "pollster",
+ "raw-window-handle",
+ "urlencoding",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "windows-sys 0.59.0",
+]
+
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -6289,6 +6374,12 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "symlink"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7973cce6668464ea31f176d85b13c7ab3bba2cb3b77a2ed26abd7801688010a"
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -7262,6 +7353,19 @@ dependencies = [
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-appender"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "050686193eb999b4bb3bc2acfa891a13da00f79734704c4b8b4ef1a10b368a3c"
+dependencies = [
+ "crossbeam-channel",
+ "symlink",
+ "thiserror 2.0.20",
+ "time",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "tracing-attributes"
 version = "0.1.31"
@@ -7636,6 +7740,12 @@ dependencies = [
  "serde_derive",
 ]
 
+[[package]]
+name = "urlencoding"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "daf8dba3b7eb870caf1ddeed7bc9d2a049f3cfdfae7cb521b087cc33ae4c49da"
+
 [[package]]
 name = "urlpattern"
 version = "0.3.0"
@@ -7852,6 +7962,7 @@ dependencies = [
  "cc",
  "downcast-rs",
  "rustix",
+ "scoped-tls",
  "smallvec",
  "wayland-sys",
 ]
@@ -7910,6 +8021,8 @@ version = "0.31.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d8eab23fefc9e41f8e841df4a9c707e8a8c4ed26e944ef69297184de2785e3be"
 dependencies = [
+ "dlib",
+ "log",
  "pkg-config",
 ]
 
@@ -9028,6 +9141,7 @@ dependencies = [
  "endi",
  "enumflags2",
  "serde",
+ "url",
  "winnow 1.0.4",
  "zcheapstr",
  "zvariant_derive",

apps/desktop/src-tauri/Cargo.toml

@@ -14,6 +14,7 @@ tauri-build = { version = "2", features = [] }
 [dependencies]
 axum = "0.8"
 cursor-server = { path = "../../../server" }
+rfd = "0.15"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 tauri = { version = "2", features = ["tray-icon"] }
@@ -26,5 +27,6 @@ tauri-plugin-updater = "2"
 tokio = { version = "1", features = ["time"] }
 tokio-util = "0.7"
 tracing = "0.1"
+tracing-appender = "0.2"
 tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 url = "2"

apps/desktop/src-tauri/src/desktop.rs

@@ -1,5 +1,5 @@
 use std::{
-    process::Command,
+    process::{Command, ExitCode},
     sync::{
         atomic::{AtomicBool, Ordering},
         Mutex,
@@ -19,7 +19,6 @@ use tauri::{
 };
 use tauri_plugin_opener::OpenerExt;
 use tokio_util::sync::CancellationToken;
-use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
 
 #[cfg(dev)]
 use cursor_server::config::ConsoleSource;
@@ -27,6 +26,7 @@ use cursor_server::{App, Config, Result};
 
 #[cfg(not(dev))]
 use crate::frontend;
+use crate::startup::{self, StartupDiagnostics};
 use crate::tray;
 
 pub(crate) const MAIN_WINDOW_LABEL: &str = "main";
@@ -141,16 +141,23 @@ fn create_main_window(
     builder.build()
 }
 
-pub fn run() {
+pub fn run() -> ExitCode {
-    let started_by_autostart = std::env::args_os().any(|arg| arg == AUTOSTART_ARG);
+    let diagnostics = match StartupDiagnostics::initialize() {
+        Ok(diagnostics) => diagnostics,
+        Err(error) => {
+            startup::report_logging_failure(error.as_ref());
+            return ExitCode::FAILURE;
+        }
+    };
+    tracing::info!(
+        version = env!("CARGO_PKG_VERSION"),
+        os = std::env::consts::OS,
+        architecture = std::env::consts::ARCH,
+        log_directory = %diagnostics.log_directory().display(),
+        "desktop starting"
+    );
 
-    tracing_subscriber::registry()
+    let started_by_autostart = std::env::args_os().any(|arg| arg == AUTOSTART_ARG);
-        .with(
-            tracing_subscriber::EnvFilter::try_from_default_env()
-                .unwrap_or_else(|_| "cursor_server=info".into()),
-        )
-        .with(tracing_subscriber::fmt::layer())
-        .init();
 
     let app = tauri::Builder::default()
         .invoke_handler(tauri::generate_handler![open_terminal_with_command])
@@ -218,8 +225,14 @@ pub fn run() {
             tray::create(app)?;
             Ok(())
         })
-        .build(tauri::generate_context!())
+        .build(tauri::generate_context!());
-        .expect("failed to build Cursor BYOK desktop app");
+    let app = match app {
+        Ok(app) => app,
+        Err(error) => {
+            diagnostics.report_fatal(&error);
+            return ExitCode::FAILURE;
+        }
+    };
 
     app.run(|app, event| match event {
         RunEvent::WindowEvent {
@@ -264,4 +277,6 @@ pub fn run() {
         } => tray::show_main_window(app),
         _ => {}
     });
+
+    ExitCode::SUCCESS
 }

apps/desktop/src-tauri/src/lib.rs

@@ -1,6 +1,7 @@
 mod desktop;
 #[cfg(not(dev))]
 mod frontend;
+mod startup;
 mod tray;
 
 pub use desktop::run;

apps/desktop/src-tauri/src/main.rs

@@ -1,5 +1,5 @@
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
-fn main() {
+fn main() -> std::process::ExitCode {
-    cursor_byok_desktop::run();
+    cursor_byok_desktop::run()
 }

apps/desktop/src-tauri/src/startup.rs

@@ -0,0 +1,139 @@
+//! Captures startup diagnostics before the database and desktop runtime initialize.
+use std::{error::Error, path::PathBuf};
+
+use rfd::{MessageButtons, MessageDialog, MessageLevel};
+use tracing_appender::{
+    non_blocking::WorkerGuard,
+    rolling::{RollingFileAppender, Rotation},
+};
+use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
+
+const LOG_DIRECTORY_NAME: &str = "logs";
+const LOG_FILE_PREFIX: &str = "cursor-byok";
+const LOG_FILE_SUFFIX: &str = "log";
+const RETAINED_LOG_FILES: usize = 15;
+
+type BoxError = Box<dyn Error + Send + Sync>;
+
+pub(crate) struct StartupDiagnostics {
+    log_directory: PathBuf,
+    _writer_guard: WorkerGuard,
+}
+
+impl StartupDiagnostics {
+    pub(crate) fn initialize() -> Result<Self, BoxError> {
+        let log_directory = cursor_server::config::managed_data_dir()?.join(LOG_DIRECTORY_NAME);
+        std::fs::create_dir_all(&log_directory)?;
+
+        let file_appender = RollingFileAppender::builder()
+            .rotation(Rotation::DAILY)
+            .filename_prefix(LOG_FILE_PREFIX)
+            .filename_suffix(LOG_FILE_SUFFIX)
+            .max_log_files(RETAINED_LOG_FILES)
+            .build(&log_directory)?;
+        let (file_writer, writer_guard) = tracing_appender::non_blocking(file_appender);
+        let filter = tracing_subscriber::EnvFilter::try_from_default_env()
+            .unwrap_or_else(|_| "cursor_byok_desktop=info,cursor_server=info".into());
+
+        tracing_subscriber::registry()
+            .with(filter)
+            .with(tracing_subscriber::fmt::layer())
+            .with(
+                tracing_subscriber::fmt::layer()
+                    .with_ansi(false)
+                    .with_writer(file_writer),
+            )
+            .try_init()?;
+
+        Ok(Self {
+            log_directory,
+            _writer_guard: writer_guard,
+        })
+    }
+
+    pub(crate) fn log_directory(&self) -> &std::path::Path {
+        &self.log_directory
+    }
+
+    pub(crate) fn report_fatal(&self, error: &(dyn Error + 'static)) {
+        let details = error_chain(error);
+        tracing::error!(
+            error = %details,
+            log_directory = %self.log_directory.display(),
+            "desktop failed to start"
+        );
+        show_fatal_dialog(&details, Some(&self.log_directory));
+    }
+}
+
+pub(crate) fn report_logging_failure(error: &(dyn Error + 'static)) {
+    let details = error_chain(error);
+    eprintln!("Cursor BYOK failed to initialize logging: {details}");
+    show_fatal_dialog(&details, None);
+}
+
+fn show_fatal_dialog(details: &str, log_directory: Option<&std::path::Path>) {
+    let log_guidance = match log_directory {
+        Some(directory) => format!(
+            "日志目录 / Log directory:\n{}\n\n请将最新的日志文件发送给开发者。\nPlease send the latest log file to the developer.",
+            directory.display()
+        ),
+        None => "日志系统也未能启动，因此没有生成日志文件。\nLogging also failed to initialize, so no log file was created."
+            .to_owned(),
+    };
+    let description = format!(
+        "Cursor BYOK 无法启动 / failed to start.\n\n错误 / Error:\n{details}\n\n{log_guidance}"
+    );
+
+    let _ = MessageDialog::new()
+        .set_level(MessageLevel::Error)
+        .set_title("Cursor BYOK 启动失败 / Startup Error")
+        .set_description(description)
+        .set_buttons(MessageButtons::Ok)
+        .show();
+}
+
+fn error_chain(error: &(dyn Error + 'static)) -> String {
+    let mut details = error.to_string();
+    let mut source = error.source();
+    while let Some(cause) = source {
+        details.push_str("\nCaused by: ");
+        details.push_str(&cause.to_string());
+        source = cause.source();
+    }
+    details
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fmt;
+
+    #[derive(Debug)]
+    struct OuterError(std::io::Error);
+
+    impl fmt::Display for OuterError {
+        fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
+            formatter.write_str("database initialization failed")
+        }
+    }
+
+    impl Error for OuterError {
+        fn source(&self) -> Option<&(dyn Error + 'static)> {
+            Some(&self.0)
+        }
+    }
+
+    #[test]
+    fn fatal_report_includes_the_complete_error_chain() {
+        let error = OuterError(std::io::Error::new(
+            std::io::ErrorKind::PermissionDenied,
+            "database file is read-only",
+        ));
+
+        assert_eq!(
+            error_chain(&error),
+            "database initialization failed\nCaused by: database file is read-only"
+        );
+    }
+}

apps/docs/scripts/build-product-demo.mjs

@@ -12,7 +12,11 @@ if (!existsSync(vite)) run(['ci'], desktopRoot);
 run(['run', 'build:demo'], desktopRoot);
 
 function run(args, cwd) {
-  const result = spawnSync(npm, args, { cwd, stdio: 'inherit' });
+  const result = spawnSync(npm, args, {
+    cwd,
+    stdio: 'inherit',
+    shell: process.platform === 'win32',
+  });
   if (result.error) throw result.error;
   if (result.status !== 0) process.exit(result.status ?? 1);
 }

server/prompt/cursor/agent/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are an AI coding assistant, powered by {{FAKE_MODEL_NAME}}. You operate in Cursor.
 
 Your main goal is to follow the USER's instructions, which are denoted by the <user_query> tag.

server/prompt/cursor/agent/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<system_reminder>
 You are now in Agent mode. You have EXITED your previous mode. Continue with the task in the new mode.
 </system_reminder>

server/prompt/cursor/ask/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are an AI coding assistant, powered by {{FAKE_MODEL_NAME}}. You operate in Cursor.
 
 Your main goal is to follow the USER's instructions, which are denoted by the <user_query> tag.

server/prompt/cursor/ask/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<system_reminder>
 You are now in Ask mode. You have EXITED your previous mode. Continue with the task in the new mode.
 </system_reminder>

server/prompt/cursor/compaction/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are compacting conversation history for future model turns.
 Produce a concise plain-text summary that preserves durable context: user goals, constraints, facts, decisions, files, commands, errors, tool outcomes, and pending follow-ups.
 Do not address the user. Do not mention compaction, summarization, or token limits.

server/prompt/cursor/compaction/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<timestamp>{{TIMESTAMP}}</timestamp>
 <user_query>
 {{USER_QUERY}}

server/prompt/cursor/debug/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are an AI coding assistant, powered by {{FAKE_MODEL_NAME}}. You operate in Cursor.
 
 Your main goal is to follow the USER's instructions, which are denoted by the <user_query> tag.

server/prompt/cursor/debug/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<system_reminder>
 You are now in Debug mode. You have EXITED your previous mode. Continue with the task in the new mode.
 </system_reminder>

server/prompt/cursor/multitask/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are an AI coding assistant, powered by Cursor {{FAKE_MODEL_NAME}}. You operate in Cursor.
 
 Your main goal is to follow the USER's instructions, which are denoted by the <user_query> tag.

server/prompt/cursor/multitask/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<system_reminder>
 You are now in Multitask mode. You have EXITED your previous mode. Continue with the task in the new mode.
 </system_reminder>

server/prompt/cursor/plan/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are an AI coding assistant, powered by {{FAKE_MODEL_NAME}}. You operate in Cursor.
 
 Your main goal is to follow the USER's instructions, which are denoted by the <user_query> tag.

server/prompt/cursor/plan/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<system_reminder>
 You are now in Plan mode. You have EXITED your previous mode. Continue with the task in the new mode.
 </system_reminder>

server/prompt/cursor/subagent/prompt.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 You are an AI coding assistant, powered by {{FAKE_MODEL_NAME}}. You operate in Cursor.
 
 Your main goal is to follow the USER's instructions, which are denoted by the <user_query> tag.

server/prompt/cursor/subagent/runtime.md

@@ -1,4 +1,3 @@
-<!-- Defines stable Cursor prompt content embedded by the server. -->
 {{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<system_reminder>
 You are currently working inside a Task subagent. Your parent agent has delegated a clearly bounded assignment to you. Complete that assignment directly with the tools available in this session. The Task tool is unavailable inside subagents, so delegation cannot be nested.
 </system_reminder>

server/src/control/service.rs

@@ -169,7 +169,7 @@ impl ControlService {
             .header(OS_HEADER, std::env::consts::OS)
             .header(APP_VERSION_HEADER, env!("CARGO_PKG_VERSION"))
             .header(LANGUAGE_HEADER, language)
-            .timeout(std::time::Duration::from_secs(5));
+            .timeout(std::time::Duration::from_secs(60));
         if let Some(disabled_ad_ids) = disabled_ad_ids.filter(|value| !value.is_empty()) {
             request = request.header(DISABLED_AD_IDS_HEADER, disabled_ad_ids);
         }

server/src/search/federation.rs

@@ -8,7 +8,7 @@ use crate::store::Store;
 use super::{catalog, SearchEngine, SearchHit};
 
 const RRF_K: f64 = 60.0;
-const MAX_RESULTS: usize = 10;
+const MAX_RESULTS: usize = 30;
 
 #[derive(Clone)]
 pub struct WebSearch {

server/src/store/sqlite.rs

@@ -28,7 +28,9 @@ impl Store {
             .max_connections(8)
             .connect_with(options)
             .await?;
+        tracing::info!("running database migrations");
         sqlx::migrate!("./migrations").run(&pool).await?;
+        tracing::info!("database migrations completed");
         Ok(Self {
             pool,
             writes: WriteCoordinator::default(),