fix: Resolve duplicate definitions and exhaustive match errors in core

Author: “thucydides”

rustorch-core/src/storage.rs

@@ -124,6 +124,11 @@ impl Storage {
             #[cfg(feature = "vulkan_backend")]
             StorageImpl::Vulkan(buf) => buf.len() as usize,
         }
+    }#[cfg(feature = "wgpu_backend")]
+            StorageImpl::Wgpu(_, size) => *size,
+            #[cfg(feature = "vulkan_backend")]
+            StorageImpl::Vulkan(buf) => buf.len() as usize,
+        }
     }
 
     pub fn is_empty(&self) -> bool {
@@ -186,6 +191,14 @@ impl fmt::Debug for Storage {
             StorageImpl::CudaStub => {
                 write!(f, "CudaStorageStub({:?})", self.device)
             }
+            #[cfg(feature = "wgpu_backend")]
+            StorageImpl::Wgpu(_, size) => {
+                write!(f, "WgpuStorage({:?}, size={})", self.device, size)
+            }
+            #[cfg(feature = "vulkan_backend")]
+            StorageImpl::Vulkan(buf) => {
+                write!(f, "VulkanStorage({:?}, size={})", self.device, buf.len())
+            }
         }
     }
 }

rustorch-core/src/tensor.rs

@@ -134,10 +134,6 @@ impl Tensor {
         self.inner.requires_grad
     }
 
-    pub fn shape(&self) -> &[usize] {
-        &self.inner.shape
-    }
-
     pub fn data(&self) -> RwLockReadGuard<'_, Vec<f32>> {
         self.inner.storage.data()
     }
@@ -342,10 +338,6 @@ impl Tensor {
         }
     }
 
-    pub fn strides(&self) -> &[usize] {
-        &self.inner.strides
-    }
-
     pub fn reshape(&self, new_shape: &[usize]) -> Tensor {
         let size: usize = self.shape().iter().product();
         let new_size: usize = new_shape.iter().product();