feat: implement authentication flow and session management

- Update RootLayout to handle authentication state and redirect users based on their auth status.
- Create an Index component to redirect unauthenticated users to the login page.
- Modify ApiAuthRepository to fetch user session data using access and refresh tokens.
- Introduce a new container file to manage use case instances for authentication and filament operations.
- Enhance authStore to validate tokens and fetch user data from the API.
- Add babel-plugin-module-resolver for improved module imports.
- Update package.json scripts for running the app on Android and iOS.
- Add expo-camera dependency for camera functionalities.
- Update tsconfig.json to include infrastructure path mapping.

backend/src/adapters/inbound/spool_preset_handler.rs

@@ -82,6 +82,15 @@ pub async fn create_preset_handler(
     Ok((StatusCode::CREATED, Json(SpoolPresetResponse::from(preset))))
 }
 
+pub async fn get_preset_handler(
+    State(state): State<AppState>,
+    Extension(_user): Extension<CurrentUser>,
+    Path(id): Path<Uuid>,
+) -> Result<impl IntoResponse, AppError> {
+    let preset = state.spool_preset_service.get_by_id(id).await?;
+    Ok(Json(SpoolPresetResponse::from(preset)))
+}
+
 pub async fn update_preset_handler(
     State(state): State<AppState>,
     Extension(user): Extension<CurrentUser>,

backend/src/application/filament_service.rs

@@ -228,7 +228,7 @@ impl FilamentService {
     pub async fn generate_qrcode_png(&self, id: Uuid, user_id: Uuid) -> Result<Vec<u8>, AppError> {
         self.get(id, user_id).await?;
 
-        let deep_link = format!("meowspool://filaments/{id}");
+        let deep_link = format!("meowspool://filament/{id}");
         let code = qrcode::QrCode::new(deep_link.as_bytes())
             .map_err(|e| AppError::Internal(anyhow::anyhow!("QR Code generation failed: {e}")))?;
 

backend/src/application/spool_preset_service.rs

@@ -23,6 +23,10 @@ impl SpoolPresetService {
         self.repo.list_for_user(user_id).await
     }
 
+    pub async fn get_by_id(&self, id: Uuid) -> Result<SpoolPreset, AppError> {
+        self.repo.find_by_id(id).await?.ok_or(AppError::NotFound)
+    }
+
     pub async fn create(
         &self,
         user_id: Uuid,

backend/src/router.rs

@@ -88,6 +88,7 @@ pub fn build(db: PgPool, config: Config) -> Router {
         // Spool Presets
         .route("/spool-presets", get(spool_preset_handler::list_presets_handler))
         .route("/spool-presets", post(spool_preset_handler::create_preset_handler))
+        .route("/spool-presets/:id", get(spool_preset_handler::get_preset_handler))
         .route("/spool-presets/:id", put(spool_preset_handler::update_preset_handler))
         .route("/spool-presets/:id", delete(spool_preset_handler::delete_preset_handler))
         .route_layer(middleware::from_fn_with_state(state.clone(), auth_middleware));