feat: 益选 OCR 订单处理系统初始提交

- 智能供应商识别（蓉城易购/烟草/杨碧月/通用）
- 百度 OCR 表格识别集成
- 规则引擎（列映射/数据清洗/单位转换/规格推断）
- 条码映射管理与云端同步（Gitea REST API）
- 云端同步支持：条码映射、供应商配置、商品资料、采购模板
- 拖拽一键处理（图片→OCR→Excel→合并）
- 191 个单元测试
- 移除无用的模板管理功能
- 清理 IDE 产物目录

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

app/ui/ui_widgets.py

@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""UI控件模块 - StatusBar、ProgressReporter、可折叠框架等"""
+
+import tkinter as tk
+from tkinter import ttk
+
+from .theme import THEMES, get_theme_mode
+
+
+class StatusBar(tk.Frame):
+    """状态栏，显示当前系统状态和进度"""
+
+    def __init__(self, master, **kwargs):
+        super().__init__(master, **kwargs)
+        self.configure(height=25, relief=tk.SUNKEN, borderwidth=1)
+
+        self.status_label = tk.Label(self, text="就绪", anchor=tk.W, padx=5)
+        self.status_label.pack(side=tk.LEFT, fill=tk.X, expand=True)
+
+        self.progress = ttk.Progressbar(self, orient=tk.HORIZONTAL, length=200, mode='determinate')
+        self.progress.pack(side=tk.RIGHT, padx=5, pady=2)
+
+        self.progress.pack_forget()
+
+    def set_status(self, text, progress=None):
+        """设置状态栏文本和进度"""
+        self.status_label.config(text=text)
+
+        if progress is not None and 0 <= progress <= 100:
+            self.progress.pack(side=tk.RIGHT, padx=5, pady=2)
+            self.progress.config(value=progress)
+        else:
+            self.progress.pack_forget()
+
+    def set_running(self, is_running=True):
+        """设置运行状态"""
+        theme = THEMES[get_theme_mode()]
+        if is_running:
+            self.status_label.config(text="处理中...", foreground=theme["info"])
+            self.progress.pack(side=tk.RIGHT, padx=5, pady=2)
+            self.progress.config(mode='indeterminate')
+            self.progress.start()
+        else:
+            self.status_label.config(text="就绪", foreground=theme["fg"])
+            self.progress.stop()
+            self.progress.pack_forget()
+
+
+class ProgressReporter:
+    def __init__(self, status_bar: StatusBar):
+        self.status_bar = status_bar
+
+    def set(self, text: str, percent: int = None):
+        try:
+            if percent is not None:
+                self.status_bar.set_status(text, percent)
+            else:
+                self.status_bar.set_status(text)
+        except Exception:
+            pass
+
+    def running(self):
+        try:
+            self.status_bar.set_running(True)
+        except Exception:
+            pass
+
+    def done(self):
+        try:
+            self.status_bar.set_running(False)
+            self.status_bar.set_status("就绪")
+        except Exception:
+            pass
+
+
+def create_collapsible_frame(parent, title, initial_state=True):
+    """创建可折叠的面板"""
+    frame = tk.Frame(parent)
+    frame.pack(fill=tk.X, pady=5)
+
+    title_frame = tk.Frame(frame)
+    title_frame.pack(fill=tk.X)
+
+    state_var = tk.BooleanVar(value=initial_state)
+    indicator = "▼" if initial_state else "►"
+    state_label = tk.Label(title_frame, text=indicator, font=("Arial", 10, "bold"))
+    state_label.pack(side=tk.LEFT, padx=5)
+
+    title_label = tk.Label(title_frame, text=title, font=("Arial", 11, "bold"))
+    title_label.pack(side=tk.LEFT, padx=5)
+
+    content_frame = tk.Frame(frame)
+    if initial_state:
+        content_frame.pack(fill=tk.X, padx=20, pady=5)
+
+    def toggle_collapse(event=None):
+        current_state = state_var.get()
+        new_state = not current_state
+        state_var.set(new_state)
+        state_label.config(text="▼" if new_state else "►")
+        if new_state:
+            content_frame.pack(fill=tk.X, padx=20, pady=5)
+        else:
+            content_frame.pack_forget()
+
+    title_frame.bind("<Button-1>", toggle_collapse)
+    state_label.bind("<Button-1>", toggle_collapse)
+    title_label.bind("<Button-1>", toggle_collapse)
+
+    return content_frame, state_var
+
+
+def center_window(window):
+    """使窗口居中显示"""
+    window.update_idletasks()
+    width = window.winfo_width()
+    height = window.winfo_height()
+    x = (window.winfo_screenwidth() // 2) - (width // 2)
+    y = (window.winfo_screenheight() // 2) - (height // 2)
+    window.geometry('{}x{}+{}+{}'.format(width, height, x, y))