refactor(error): 规范化分层错误类型并优化异常捕捉

- 新增 tracing 记录异常，移除不必要的 Result
- 重构 错误处理架构

ddddocr-tract/src/ocr/session.rs

@@ -1,6 +1,6 @@
 use crate::loader::ModelLoader;
 use anyhow::Context;
-use ddddocr_core::error::{DdddError, Result, TensorErrorReason};
+use ddddocr_core::error::{DdddError, Result, TensorError};
 use ddddocr_core::utils::normalize_ocr_logits;
 use ddddocr_core::{InferenceEngine, ModelMetadata, OcrEngine, OcrOutput};
 use ndarray::s;
@@ -49,7 +49,7 @@ impl InferenceEngine for OcrSession {
             .session
             .run(tvec!(tensor.into()))
             .map_err(|_| {
-                DdddError::Inference(TensorErrorReason::EngineError(
+                DdddError::Inference(TensorError::EngineError(
                     "执行模型推理失败".to_string(),
                 ))
             })?;