Fix startup failure from fd exhaustion when launched via Finder (#500)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

crates-tauri/yaak-app-client/Cargo.toml

@@ -24,6 +24,9 @@ tauri-build = { version = "2.6.1", features = [] }
 [target.'cfg(target_os = "linux")'.dependencies]
 openssl-sys = { version = "0.9.105", features = ["vendored"] } # For Ubuntu installation to work
 
+[target.'cfg(any(target_os = "macos", target_os = "linux"))'.dependencies]
+rlimit = "0.11" # Raise the launchd 256 open-file soft limit at startup
+
 [dependencies]
 charset = "0.1.5"
 chrono = { workspace = true, features = ["serde"] }

crates-tauri/yaak-app-client/src/lib.rs

@@ -1676,6 +1676,14 @@ async fn cmd_check_for_updates<R: Runtime>(
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 #[cfg_attr(feature = "cef", tauri::cef_entry_point)]
 pub fn run() {
+    // GUI apps launched via Finder/launchd inherit a 256 open-file soft limit on macOS
+    // (1024 on most Linux desktops). SQLite WAL connections hold ~3 fds each, so raise
+    // the limit toward the hard cap before opening any DB pools.
+    #[cfg(any(target_os = "macos", target_os = "linux"))]
+    if let Err(e) = rlimit::increase_nofile_limit(10240) {
+        eprintln!("Failed to raise open-file limit: {e}");
+    }
+
     let mut builder = tauri::Builder::<TauriRuntime>::default().plugin(
         Builder::default()
             .targets([