添加PyInstaller打包支持和运行时路径修复

- 创建PyInstaller规范文件和打包脚本
- 修复开发/打包环境路径兼容性问题
- 添加PaddleOCR运行时依赖（opencv-contrib-python, pypdfium2, pyclipper）
- 支持打包后的多进程启动
- 修复图标路径和翻译文件路径
- 清理重复的模型和FFmpeg文件
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/tools/common_tools.py

@@ -38,11 +38,15 @@ def is_video_or_image(filename):
     return file_extension in video_extensions or file_extension in image_extensions
 
 def merge_big_file_if_not_exists(dir, file, man_filename = None):
-    if file not in os.listdir(dir):
-        fs = Filesplit()
-        if man_filename is not None:
-            fs.man_filename = man_filename
-        fs.merge(input_dir=dir)
+    try:
+        if file not in os.listdir(dir):
+            fs = Filesplit()
+            if man_filename is not None:
+                fs.man_filename = man_filename
+            fs.merge(input_dir=dir)
+    except Exception as e:
+        print(f"Warning: Could not merge big file {file} in {dir}: {e}")
+        return False
 
 def get_readable_path(path):
     if sys.platform != 'win32':

backend/tools/ffmpeg_cli.py

@@ -1,4 +1,5 @@
 import os
+import sys
 import stat
 
 import platform
@@ -21,16 +22,29 @@ class FFmpegCLI:
         return cls._instance
     
     def __init__(self):
-        os.chmod(self.ffmpeg_path, stat.S_IRWXU + stat.S_IRWXG + stat.S_IRWXO)
-        
+        # 设置 FFmpeg 可执行文件权限
+        try:
+            os.chmod(self.ffmpeg_path, stat.S_IRWXU | stat.S_IRGRP | stat.S_IXGRP | stat.S_IROTH | stat.S_IXOTH)
+        except Exception as e:
+            print(f"Warning: Could not set ffmpeg executable permissions: {e}")
+
     @property
     def ffmpeg_path(self):
         system = platform.system()
+
+        # 确保路径正确（打包环境 vs 开发环境）
+        if getattr(sys, 'frozen', False):
+            # 打包环境：BASE_DIR 指向 sys._MEIPASS
+            base_path = os.path.join(BASE_DIR, 'backend')
+        else:
+            # 开发环境：BASE_DIR 已经是项目根目录
+            base_path = BASE_DIR
+
         if system == "Windows":
-            ffmpeg_dir = os.path.join(BASE_DIR, 'ffmpeg', 'win_x64')
+            ffmpeg_dir = os.path.join(base_path, 'ffmpeg', 'win_x64')
             merge_big_file_if_not_exists(ffmpeg_dir, 'ffmpeg.exe')
             return os.path.join(ffmpeg_dir, 'ffmpeg.exe')
         elif system == "Linux":
-            return os.path.join(BASE_DIR, 'ffmpeg',  'linux_x64', 'ffmpeg')
+            return os.path.join(base_path, 'ffmpeg',  'linux_x64', 'ffmpeg')
         else:
-            return os.path.join(BASE_DIR, 'ffmpeg', 'macos', 'ffmpeg')
+            return os.path.join(base_path, 'ffmpeg', 'macos', 'ffmpeg')

backend/tools/model_config.py

@@ -1,4 +1,5 @@
 import os
+import sys
 from backend.config import config, BASE_DIR
 from backend.tools.common_tools import merge_big_file_if_not_exists
 from backend.tools.constant import SubtitleDetectMode
@@ -10,15 +11,34 @@ _MODEL_NAME_MAP = {
 
 class ModelConfig:
     def __init__(self):
-        self.LAMA_MODEL_DIR = os.path.join(BASE_DIR, 'models', 'big-lama')
-        self.STTN_AUTO_MODEL_PATH = os.path.join(BASE_DIR, 'models', 'sttn-auto', 'infer_model.pth')
-        self.STTN_DET_MODEL_PATH = os.path.join(BASE_DIR, 'models', 'sttn-det', 'sttn.pth')
+        # 确保模型路径正确（打包环境 vs 开发环境）
+        if getattr(sys, 'frozen', False):
+            # 打包环境：BASE_DIR 指向 sys._MEIPASS
+            model_base = os.path.join(BASE_DIR, 'backend')
+        else:
+            # 开发环境：BASE_DIR 已经是项目根目录
+            model_base = BASE_DIR
+
+        self.LAMA_MODEL_DIR = os.path.join(model_base, 'models', 'big-lama')
+        self.STTN_AUTO_MODEL_PATH = os.path.join(model_base, 'models', 'sttn-auto', 'infer_model.pth')
+        self.STTN_DET_MODEL_PATH = os.path.join(model_base, 'models', 'sttn-det', 'sttn.pth')
         if config.subtitleDetectMode.value == SubtitleDetectMode.PP_OCRv5_MOBILE:
-            self.DET_MODEL_DIR = os.path.join(BASE_DIR,'models', 'V5', 'ch_det_fast')
+            self.DET_MODEL_DIR = os.path.join(model_base,'models', 'V5', 'ch_det_fast')
         elif config.subtitleDetectMode.value == SubtitleDetectMode.PP_OCRv5_SERVER:
-            self.DET_MODEL_DIR = os.path.join(BASE_DIR, 'models', 'V5', 'ch_det')
+            self.DET_MODEL_DIR = os.path.join(model_base, 'models', 'V5', 'ch_det')
         else:
             raise ValueError(f"Invalid subtitle detect mode: {config.subtitleDetectMode.value}")
         self.DET_MODEL_NAME = _MODEL_NAME_MAP[config.subtitleDetectMode.value]
 
-        merge_big_file_if_not_exists(self.LAMA_MODEL_DIR, 'bit-lama.pt')
+        # 尝试合并大文件（如果需要）
+        lama_file = 'big-lama.pt'  # 修正文件名：实际模型文件是 big-lama.pt
+        lama_file_path = os.path.join(self.LAMA_MODEL_DIR, lama_file)
+        if not os.path.exists(lama_file_path):
+            merge_big_file_if_not_exists(self.LAMA_MODEL_DIR, lama_file)
+            # 检查合并后文件是否存在
+            if not os.path.exists(lama_file_path):
+                raise FileNotFoundError(
+                    f"LAMA model file not found: {lama_file_path}. "
+                    f"Please ensure the model file exists in {self.LAMA_MODEL_DIR}"
+                )
+