debug: Add panic hook and numbered steps to diagnose startup issue

backend/src/main.rs

@@ -17,23 +17,35 @@ use tower_http::{
 };
 use config::Config;
 
+// Set up panic hook to catch panics before main
+fn setup_panic_hook() {
+    std::panic::set_hook(Box::new(|panic_info| {
+        let msg = panic_info.to_string();
+        println!("[PANIC] {}", msg);
+        let location = panic_info.location().unwrap_or_else(|| std::panic::Location::caller());
+        println!("[PANIC] Location: {}:{}:{}", location.file(), location.line(), location.column());
+    }));
+}
+
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    // Use println! which is more reliable in Docker
-    println!("=== NORMOGEN BACKEND STARTING ===");
-    println!("[STARTUP] Loading environment variables...");
+    // Install panic hook FIRST
+    setup_panic_hook();
+    
+    // IMMEDIATE output - this MUST show up
+    println!("=== NORMOGEN STARTING ===");
+    println!("[1/7] Loading environment variables...");
     
     match dotenv::dotenv() {
         Ok(path) => {
-            println!("[STARTUP] Loaded .env from: {:?}", path);
+            println!("[1/7] Loaded .env from: {:?}", path);
         }
-        Err(e) => {
-            println!("[STARTUP] No .env file found (this is OK in Docker): {}", e);
+        Err(_) => {
+            println!("[1/7] No .env file found (OK in Docker)");
         }
     }
     
-    println!("[STARTUP] Initializing logging...");
-    
+    println!("[2/7] Initializing logging...");
     tracing_subscriber::fmt()
         .with_env_filter(
             tracing_subscriber::EnvFilter::try_from_default_env()
@@ -41,11 +53,10 @@ async fn main() -> anyhow::Result<()> {
         )
         .init();
     
-    println!("[STARTUP] Loading configuration...");
-    
+    println!("[3/7] Loading configuration...");
     let config = match Config::from_env() {
         Ok(cfg) => {
-            println!("[STARTUP] Config loaded: DB={}, Port={}", cfg.database.database, cfg.server.port);
+            println!("[3/7] Config loaded: DB={}, Port={}", cfg.database.database, cfg.server.port);
             cfg
         }
         Err(e) => {
@@ -54,11 +65,10 @@ async fn main() -> anyhow::Result<()> {
         }
     };
     
-    println!("[STARTUP] Connecting to MongoDB at {}...", config.database.uri);
-    
+    println!("[4/7] Connecting to MongoDB at {}...", config.database.uri);
     let db = match db::MongoDb::new(&config.database.uri, &config.database.database).await {
         Ok(db) => {
-            println!("[STARTUP] MongoDB connection successful!");
+            println!("[4/7] MongoDB connection successful!");
             db
         }
         Err(e) => {
@@ -67,11 +77,10 @@ async fn main() -> anyhow::Result<()> {
         }
     };
     
-    println!("[STARTUP] Performing health check...");
-    
+    println!("[5/7] Performing health check...");
     match db.health_check().await {
-        Ok(health) => {
-            println!("[STARTUP] MongoDB health check: {}", health);
+        Ok(_) => {
+            println!("[5/7] MongoDB health check: OK");
         }
         Err(e) => {
             println!("[FATAL] MongoDB health check failed: {}", e);
@@ -79,6 +88,7 @@ async fn main() -> anyhow::Result<()> {
         }
     }
     
+    println!("[6/7] Building application...");
     let jwt_service = auth::JwtService::new(config.jwt.clone());
     
     let app_state = config::AppState {
@@ -87,8 +97,6 @@ async fn main() -> anyhow::Result<()> {
         config: config.clone(),
     };
     
-    println!("[STARTUP] Building router...");
-    
     let public_routes = Router::new()
         .route("/health", get(handlers::health_check))
         .route("/ready", get(handlers::ready_check))
@@ -102,21 +110,17 @@ async fn main() -> anyhow::Result<()> {
         );
     
     let protected_routes = Router::new()
-        // Profile management
         .route("/api/users/me", get(handlers::get_profile))
         .route("/api/users/me", put(handlers::update_profile))
         .route("/api/users/me", delete(handlers::delete_account))
-        // Account settings
         .route("/api/users/me/settings", get(handlers::get_settings))
-        .route("/api/users/me/settings", put(handlers::update_settings))
+        .route("/api/users/me/settings", put(handers::update_settings))
         .route("/api/users/me/change-password", post(handlers::change_password))
-        // Share management (Phase 2.5)
         .route("/api/shares", post(handlers::create_share))
         .route("/api/shares", get(handlers::list_shares))
         .route("/api/shares/:id", get(handlers::get_share))
         .route("/api/shares/:id", put(handlers::update_share))
         .route("/api/shares/:id", delete(handlers::delete_share))
-        // Permissions (Phase 2.5)
         .route("/api/permissions/check", post(handlers::check_permission))
         .layer(
             ServiceBuilder::new()
@@ -130,13 +134,12 @@ async fn main() -> anyhow::Result<()> {
     
     let app = public_routes.merge(protected_routes).with_state(app_state);
     
-    println!("[STARTUP] Binding to {}:{}...", config.server.host, config.server.port);
-    
+    println!("[7/7] Starting server on {}:{}...", config.server.host, config.server.port);
     let listener = tokio::net::TcpListener::bind(&format!("{}:{}", config.server.host, config.server.port))
         .await?;
     
-    println!("[STARTUP] Server listening on http://{}:{}", config.server.host, config.server.port);
-    println!("[STARTUP] Server ready to accept connections!");
+    println!("=== SERVER READY ===");
+    println!("Listening on http://{}:{}", config.server.host, config.server.port);
     
     tracing::info!("Server listening on {}:{}", config.server.host, config.server.port);