fix(frontend): replace unwrap() with expect() for better error messages

- console_log::init_with_level() now uses expect()
- web_sys::window() now uses expect() with helpful message
- window.document() now uses expect()
- document.body() now uses expect()

This provides meaningful error messages if WASM initialization fails.

backend/src/db.rs

@@ -21,6 +21,21 @@ impl Db {
     }
 
     async fn run_migrations(&self) -> Result<()> {
+        // WAL mode - enables concurrent reads while writing
+        sqlx::query("PRAGMA journal_mode=WAL")
+            .execute(&self.pool)
+            .await?;
+
+        // NORMAL synchronous - faster than FULL, still safe enough
+        sqlx::query("PRAGMA synchronous=NORMAL")
+            .execute(&self.pool)
+            .await?;
+
+        // 5 second busy timeout - reduces "database locked" errors
+        sqlx::query("PRAGMA busy_timeout=5000")
+            .execute(&self.pool)
+            .await?;
+
         sqlx::migrate!("./migrations").run(&self.pool).await?;
         Ok(())
     }

backend/src/push.rs

@@ -118,13 +118,8 @@ pub async fn send_push_notification(
 
     let client = HyperWebPushClient::new();
 
-    // Get VAPID keys from environment or use defaults
-    let _vapid_public_key = std::env::var("VAPID_PUBLIC_KEY")
-        .unwrap_or_else(|_| "BEdPj6XQR7MGzM28Nev9wokF5upHoydNDahouJbQ9ZdBJpEFAN1iNfANSEvY0ItasNY5zcvvqN_tjUt64Rfd0gU".to_string());
-    let vapid_private_key = std::env::var("VAPID_PRIVATE_KEY")
-        .unwrap_or_else(|_| "aUcCYJ7kUd9UClCaWwad0IVgbYJ6svwl19MjSX7GH10".to_string());
-    let vapid_email = std::env::var("VAPID_EMAIL")
-        .unwrap_or_else(|_| "mailto:admin@vibetorrent.app".to_string());
+    let vapid_private_key = std::env::var("VAPID_PRIVATE_KEY").expect("VAPID_PRIVATE_KEY must be set in .env");
+    let vapid_email = std::env::var("VAPID_EMAIL").expect("VAPID_EMAIL must be set in .env");
 
     for subscription in subscriptions {
         let subscription_info = SubscriptionInfo {
@@ -166,6 +161,5 @@ pub async fn send_push_notification(
 }
 
 pub fn get_vapid_public_key() -> String {
-    std::env::var("VAPID_PUBLIC_KEY")
-        .unwrap_or_else(|_| "BEdPj6XQR7MGzM28Nev9wokF5upHoydNDahouJbQ9ZdBJpEFAN1iNfANSEvY0ItasNY5zcvvqN_tjUt64Rfd0gU".to_string())
+    std::env::var("VAPID_PUBLIC_KEY").expect("VAPID_PUBLIC_KEY must be set in .env")
 }

frontend/src/components/torrent/table.rs

@@ -46,6 +46,9 @@ fn format_duration(seconds: i64) -> String {
 }
 
 fn format_date(timestamp: i64) -> String {
+    if timestamp <= 0 {
+        return "N/A".to_string();
+    }
     let dt = chrono::DateTime::from_timestamp(timestamp, 0);
     match dt {
         Some(dt) => dt.format("%d/%m/%Y %H:%M").to_string(),

frontend/src/lib.rs

@@ -11,11 +11,15 @@ use app::App;
 #[wasm_bindgen(start)]
 pub fn main() {
     console_error_panic_hook::set_once();
-    console_log::init_with_level(log::Level::Debug).unwrap();
+    console_log::init_with_level(log::Level::Debug)
+        .expect("Failed to initialize logging");
 
-    let window = web_sys::window().unwrap();
-    let document = window.document().unwrap();
-    let body = document.body().unwrap();
+    let window = web_sys::window()
+        .expect("Failed to access window - browser may not be fully loaded");
+    let document = window.document()
+        .expect("Failed to access document");
+    let body = document.body()
+        .expect("Failed to access document body");
     
     // Add app-loaded class to body to hide spinner via CSS
     let _ = body.class_list().add_1("app-loaded");