feat(ui): 接入主入口 + 迁移 LoginDialog/ImageGeneratorWindow 样式

- main() 创建 QApplication 后立即 apply_theme，所有后续 widget（含 preflight QMessageBox）都吃全局主题
- LoginDialog: 删 80 行 inline QSS 块，objectName=loginDialog/loginTitle，主按钮 variant=primary，error_label status property
- ImageGeneratorWindow: 删 50 行 apply_styles QSS 块，删 30 处 inline setStyleSheet
- "生成图片" 主按钮 variant=primary（pill 圆角 + accent 实色背景）
- status_label 全部用 _set_status(success|warning|danger|info|muted) helper
- DragDropScrollArea 拖拽态走 drag_state property（idle/active）
- 缩略图 role=thumb/thumb_index，删除按钮 #thumbDeleteBtn variant=danger
- generated_image_label has_image property，"已复制" success-flash variant
- preview_label/prompt_display 走 objectName + 全局 QSS

剩余：StyleDesignerTab 和 task_queue.py。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

+## Design Document: Image History Management
+
+### Context
+当前应用缺乏图片历史记录功能，用户生成图片后需要手动下载和管理。需要实现自动保存、管理和查看历史生成记录的功能，提升用户体验和工作效率。
+
+### Goals / Non-Goals
+**Goals:**
+- 自动保存所有生成的图片和相关元数据
+- 提供直观的历史记录浏览界面
+- 支持从历史记录快速重新加载图片
+- 保持与现有功能的完全兼容
+
+**Non-Goals:**
+- 不实现云同步功能（纯本地存储）
+- 不修改现有图片生成核心逻辑
+- 不依赖外部数据库或复杂依赖
+
+### Decisions
+
+#### 1. 存储架构
+**Decision**: 使用文件系统 + JSON索引的轻量级存储方案
+- **Why**: 避免引入重型数据库依赖，保持应用轻量化
+- **Alternatives considered**: SQLite数据库, Redis缓存, 文件系统-only方案
+- **Chosen approach**: `/images/YYYYMMDDHHMMSS/` 目录结构 + 全局 `history_index.json`
+
+#### 2. 数据结构设计
+**Decision**: 采用分层存储结构
+```
+/images/
+├── history_index.json          # 全局索引文件
+└── 20241201123456/             # 按时间戳的目录
+    ├── metadata.json           # 该会话的元数据
+    ├── generated.png           # 生成的图片
+    ├── reference1.jpg          # 参考图片1
+    └── reference2.jpg          # 参考图片2
+```
+
+#### 3. UI集成方案
+**Decision**: 在现有主界面添加"历史记录"标签页
+- **Why**: 保持界面一致性，最小化学习成本
+- **Alternatives considered**: 独立历史记录窗口, 侧边栏集成, 右键菜单
+
+#### 4. 性能优化策略
+**Decision**: 延迟加载和缩略图缓存
+- 历史记录列表只加载基本信息和缩略图
+- 点击时才加载完整图片
+- 实现缩略图缓存机制
+
+### Risks / Trade-offs
+- **[磁盘空间使用]** → 添加用户配置选项：最大历史记录数量限制
+- **[大量历史记录性能]** → 实现分页加载和虚拟滚动
+- **[跨平台路径处理]** → 使用 `pathlib.Path` 确保跨平台兼容性
+- **[UI响应性]** → 使用异步加载避免界面冻结
+
+### Migration Plan
+1. **Phase 1**: 实现 `HistoryManager` 类和基础存储逻辑
+2. **Phase 2**: 修改现有图片生成流程，添加自动保存
+3. **Phase 3**: 开发历史记录界面和交互功能
+4. **Phase 4**: 添加配置选项和性能优化
+
+**Rollback plan**: 所有功能都是增量添加，移除新功能不会影响现有系统稳定性。
+
+### Open Questions
+- 历史记录的默认数量上限应该是多少？
+- 是否需要历史记录的搜索功能？
+- 是否需要支持历史记录的导入/导出？
+- 如何处理参考图片的版权和隐私问题？
+
+### Technical Architecture Details
+
+#### HistoryManager Class Structure
+```python
+class HistoryManager:
+    def __init__(self, base_path: Path)
+    def save_generation(self, image_bytes, prompt, references, params)
+    def load_history_index(self) -> List[HistoryItem]
+    def get_history_item(self, timestamp: str) -> HistoryItem
+    def delete_history_item(self, timestamp: str) -> bool
+    def cleanup_old_records(self, max_count: int)
+```
+
+#### Data Models
+```python
+@dataclass
+class HistoryItem:
+    timestamp: str
+    prompt: str
+    generated_image_path: Path
+    reference_image_paths: List[Path]
+    aspect_ratio: str
+    image_size: str
+    model: str
+    created_at: datetime
+```
+
+#### Integration Points
+- **ImageGenerationWorker**: 修改 `on_image_generated` 回调
+- **ImageGeneratorWindow**: 添加历史记录标签页和相关UI组件
+- **Configuration**: 扩展 `config.json` 添加历史记录相关配置
\ No newline at end of file

+# Change: Add Image History Management
+
+## Why
+用户需要一个图片历史记录功能来管理和查看之前生成的图片，目前每次生成图片后都需要手动下载，缺乏历史记录管理和本地图片库功能。
+
+## What Changes
+- 添加图片自动下载功能：在图片生成成功后自动保存到本地 `/images/` 目录
+- 创建历史记录管理系统：按时间戳存储图片和相关元数据（prompt、参考图等）
+- 新增历史记录界面：在主界面添加历史记录标签页，展示所有历史生成记录
+- 实现本地图片加载：允许用户点击历史记录中的缩略图来加载和查看完整图片
+
+## Impact
+- **Affected specs**:
+  - `image-generation` (MODIFIED: 添加自动下载和历史记录保存)
+  - `user-interface` (MODIFIED: 添加历史记录标签页)
+- **Affected code**:
+  - `image_generator.py:937-944` (修改 `on_image_generated` 方法添加自动保存)
+  - `image_generator.py:1002-1020` (修改 `download_image` 方法)
+  - 新增 `HistoryManager` 类和相关历史记录管理逻辑
+  - 主界面UI修改：添加历史记录标签页和展示组件
\ No newline at end of file

+## ADDED Requirements
+
+### Requirement: Automatic Image History Storage
+The system SHALL automatically save all generated images and their metadata to local storage when image generation is successful.
+
+#### Scenario: Image generation auto-save
+- **WHEN** image generation is completed successfully
+- **THEN** the system SHALL automatically save the generated image to a timestamped directory
+- **AND** save the prompt text and generation parameters
+- **AND** copy any reference images used
+- **AND** update the global history index
+
+#### Scenario: Directory structure creation
+- **WHEN** creating a new history record
+- **THEN** the system SHALL create a directory named with YYYYMMDDHHMMSS timestamp format
+- **AND** ensure the directory structure is: `/images/{timestamp}/generated.png, reference1.jpg, reference2.jpg, metadata.json`
+
+### Requirement: History Record Management
+The system SHALL provide functionality to manage and browse image generation history.
+
+#### Scenario: History index loading
+- **WHEN** the application starts or the history tab is opened
+- **THEN** the system SHALL load the history index from `history_index.json`
+- **AND** display a list of all historical generation records sorted by timestamp
+
+#### Scenario: History record deletion
+- **WHEN** the user selects a history record and chooses to delete it
+- **THEN** the system SHALL remove the record from the index
+- **AND** delete the corresponding directory and all its files
+- **AND** confirm the deletion action with the user
+
+### Requirement: History Browser Interface
+The system SHALL provide a user interface to browse and interact with image generation history.
+
+#### Scenario: History list display
+- **WHEN** the history tab is opened
+- **THEN** the system SHALL display a list of historical records
+- **AND** show thumbnail previews of generated images
+- **AND** display prompt text, generation date, and parameters for each record
+
+#### Scenario: History item selection
+- **WHEN** the user clicks on a history item
+- **THEN** the system SHALL load the corresponding image into the main preview area
+- **AND** display the original prompt text in the prompt input field
+- **AND** restore the generation parameters (aspect ratio, size, model)
+
+### Requirement: Local Image Loading
+The system SHALL enable loading previously generated images from local history.
+
+#### Scenario: Load image from history
+- **WHEN** a history item is selected
+- **THEN** the system SHALL load the full-resolution image from local storage
+- **AND** display it in the preview area with the same functionality as newly generated images
+- **AND** enable download and full-screen viewing options
+
+#### Scenario: Reference image restoration
+- **WHEN** loading a history item that had reference images
+- **THEN** the system SHALL display the reference images in the reference area
+- **AND** allow the user to modify or remove them before generating new images
+
+### Requirement: Configuration and Settings
+The system SHALL provide configuration options for history management.
+
+#### Scenario: History storage location
+- **WHEN** the application starts
+- **THEN** the system SHALL create the images directory in the application's data directory
+- **AND** allow users to configure a custom storage location through settings
+
+#### Scenario: History limits configuration
+- **WHEN** the number of history records exceeds the configured limit
+- **THEN** the system SHALL automatically remove the oldest records
+- **AND** provide user settings to configure the maximum number of history records
+
+### Requirement: History Data Persistence
+The system SHALL ensure history data persists across application sessions.
+
+#### Scenario: Data persistence
+- **WHEN** the application is closed and reopened
+- **THEN** the system SHALL preserve all saved history records
+- **AND** maintain the same directory structure and file organization
+- **AND** recover gracefully if the history index file is corrupted
+
+## MODIFIED Requirements
+
+### Requirement: Image Generation Workflow
+The system SHALL integrate history saving into the existing image generation workflow.
+
+#### Scenario: Enhanced image generation completion
+- **WHEN** image generation is completed successfully
+- **THEN** the system SHALL perform all existing success behaviors (display image, enable download)
+- **AND** additionally save the image and metadata to local history
+- **AND** update the history index with the new record
+
+#### Scenario: Error handling in history saving
+- **WHEN** history saving encounters an error
+- **THEN** the system SHALL not affect the image generation success state
+- **AND** log the error without interrupting user experience
+- **AND** continue with normal image display and download functionality
\ No newline at end of file

+## 1. 核心数据结构和存储
+- [x] 1.1 创建 `HistoryManager` 类，负责历史记录的管理
+- [x] 1.2 设计历史记录数据结构：时间戳、prompt、参考图路径、生成图路径
+- [x] 1.3 实现本地文件存储逻辑：`/images/YYYYMMDDHHMMSS/` 目录结构
+- [x] 1.4 创建历史记录索引文件 `history_index.json`
+
+## 2. 图片自动下载和保存
+- [x] 2.1 修改 `on_image_generated()` 方法，在生成成功后自动保存图片
+- [x] 2.2 实现参考图片的本地复制和保存
+- [x] 2.3 创建元数据文件 `metadata.json` 保存prompt和参数信息
+- [x] 2.4 更新历史记录索引文件
+
+## 3. 历史记录管理功能
+- [x] 3.1 实现 `HistoryManager.load_history()` 方法加载历史记录
+- [x] 3.2 实现 `HistoryManager.get_history_item()` 方法获取单个历史记录
+- [x] 3.3 实现 `HistoryManager.delete_history_item()` 方法删除历史记录
+- [x] 3.4 实现历史记录的搜索和过滤功能
+
+## 4. 历史记录界面开发
+- [x] 4.1 在主界面添加"历史记录"标签页
+- [x] 4.2 创建历史记录列表组件，显示缩略图和基本信息
+- [x] 4.3 实现历史记录项的点击加载功能
+- [x] 4.4 添加历史记录的右键菜单（删除、导出等）
+
+## 5. 图片展示和交互
+- [x] 5.1 实现从历史记录加载图片到预览区域
+- [x] 5.2 创建历史记录详情查看功能（显示完整prompt、参数等）
+- [x] 5.3 实现历史记录图片的双击全屏查看
+- [x] 5.4 添加历史记录图片的批量导出功能
+
+## 6. 配置和设置
+- [x] 6.1 添加历史记录存储路径配置选项
+- [x] 6.2 实现历史记录数量限制和自动清理设置
+- [x] 6.3 添加历史记录功能的启用/禁用开关
+
+## 7. 测试和验证
+- [x] 7.1 测试图片生成后自动保存到历史记录
+- [x] 7.2 测试历史记录界面的加载和显示
+- [x] 7.3 测试从历史记录加载图片功能
+- [x] 7.4 测试历史记录的删除和清理功能
+- [x] 7.5 验证大量历史记录下的性能表现
+
+## 8. 文档和部署
+- [ ] 8.1 更新README.md，添加历史记录功能说明
+- [ ] 8.2 创建历史记录功能的使用指南
+- [ ] 8.3 测试在不同操作系统下的兼容性
\ No newline at end of file

+## Design Document: Simple Logging System
+
+### Context
+当前应用缺乏基本的日志记录功能，当出现问题时难以诊断。需要建立简单实用的日志系统来记录关键事件和错误信息。
+
+### Goals / Non-Goals
+**Goals:**
+- 提供基本的日志记录功能
+- 记录关键操作和错误信息
+- 实现简单的日志文件管理
+- 使用标准库，保持简单
+- 帮助快速定位和解决问题
+
+**Non-Goals:**
+- 不实现复杂的日志分析功能
+- 不集成第三方日志服务
+- 不实现实时日志监控
+- 不设计复杂的日志分类系统
+
+### Decisions
+
+#### 1. 日志框架选择
+**Decision**: 使用 Python 标准库 `logging` 模块
+- **Why**: 标准库提供足够的基础功能，无额外依赖
+- **Alternatives considered**: print语句、简单的文件写入
+- **Chosen approach**: Python logging + 基础配置
+
+#### 2. 日志文件结构
+**Decision**: 单一日志文件
+```
+logs/
+└── app.log    # 统一的应用日志文件
+```
+
+#### 3. 日志轮转策略
+**Decision**: 基于文件大小的简单轮转
+- 最大文件大小：10MB
+- 保留最近 5 个历史文件
+- 不使用压缩，保持简单
+
+#### 4. 日志级别策略
+- **INFO**: 记录正常操作流程
+- **WARNING**: 记录潜在问题
+- **ERROR**: 记录操作失败和错误
+- **DEBUG**: 开发时可启用详细信息
+
+### Technical Architecture Details
+
+#### 简化的日志系统
+```
+SimpleLogger
+├── 初始化基础配置
+├── 创建单一logger
+├── 设置简单格式化器
+└── 实现基础轮转
+
+格式化器
+├── 时间戳
+├── 日志级别
+├── 模块名称
+└── 消息内容
+```
+
+#### 关键日志记录点
+1. **应用启动**: 应用启动、配置加载
+2. **用户认证**: 登录成功/失败、认证错误
+3. **配置操作**: 配置文件读取错误
+4. **数据库连接**: 连接成功/失败、查询错误
+5. **图片生成**: API调用成功/失败、生成错误
+6. **文件操作**: 图片保存成功/失败、历史记录错误
+
+#### 性能考虑
+- 使用标准库的优化性能
+- 简单格式减少格式化开销
+- 合理的轮转避免大文件问题
+- 关键操作才记录，避免过度日志
+
+### Integration Points
+
+#### 模块集成
+- **DatabaseManager**: 添加基础数据库日志
+- **ImageGeneratorWindow**: 添加关键操作日志
+- **ImageGenerationWorker**: 添加生成过程日志
+- **HistoryManager**: 添加文件操作日志
+
+#### 配置集成
+```json
+{
+  "logging": {
+    "enabled": true,
+    "level": "INFO",
+    "max_file_size_mb": 10
+  }
+}
+```
+
+### Implementation Plan
+1. **Step 1**: 创建简单的日志初始化函数
+2. **Step 2**: 集成到 DatabaseManager
+3. **Step 3**: 集成到图片生成模块
+4. **Step 4**: 集成到错误处理
+5. **Step 5**: 测试和验证
+
+### Design Principles
+- 简单实用：只记录必要信息
+- 不影响性能：关键操作才记录
+- 易于查看：日志文件直接可读
+- 维护简单：最小化代码复杂度
\ No newline at end of file

+# Change: Add Simple Logging System
+
+## Why
+当前应用缺乏基本的日志记录功能，当用户遇到API错误、配置问题、图片生成失败等情况时，开发者无法获得基本的诊断信息。添加简单的日志系统将帮助快速定位和解决常见问题。
+
+## What Changes
+- 添加简单的日志记录功能，统一输出到 `logs/app.log`
+- 记录关键事件：应用启动、用户登录、图片生成、错误信息
+- 使用标准Python logging模块，保持简单实用
+- 实现基本的日志文件轮转（大小限制）
+- 记录基本的错误信息和操作状态
+
+## Impact
+- **Affected specs**:
+  - `logging-system` (ADDED: 基础日志记录功能)
+  - `error-handling` (MODIFIED: 添加基本错误日志)
+  - `user-operations` (MODIFIED: 记录关键操作日志)
+- **Affected code**:
+  - 全局添加简单日志初始化
+  - DatabaseManager 类添加基础数据库日志
+  - ImageGeneratorWindow 类添加关键操作日志
+  - ImageGenerationWorker 类添加生成过程日志
+  - 主要错误处理函数添加日志记录
\ No newline at end of file

+## ADDED Requirements
+
+### Requirement: Simple Logging System
+The system SHALL provide a simple logging system that records key application events and errors for basic troubleshooting.
+
+#### Scenario: Application initialization logging
+- **WHEN** the application starts
+- **THEN** the system SHALL log startup information and configuration loading
+- **AND** SHALL record logging system initialization
+- **AND** SHALL note the application version and platform
+
+#### Scenario: Basic logging classification
+- **WHEN** logging events occur
+- **THEN** the system SHALL categorize logs into appropriate levels (INFO, WARNING, ERROR, DEBUG)
+- **AND** SHALL write all logs to a single app.log file
+- **AND** SHALL maintain consistent formatting across log entries
+
+### Requirement: Basic Log File Management
+The system SHALL implement simple log file management with size-based rotation.
+
+#### Scenario: Log file creation and rotation
+- **WHEN** the application starts
+- **THEN** the system SHALL create a logs/ directory in the application folder
+- **AND** SHALL create a single app.log file for all logs
+- **AND** SHALL implement file rotation when file reaches 10MB size limit
+- **AND** SHALL keep the 5 most recent log files
+
+### Requirement: Database Operation Logging
+The system SHALL record basic database-related operations for simple debugging.
+
+#### Scenario: Database connection logging
+- **WHEN** attempting to connect to the database
+- **THEN** the system SHALL log connection attempts and results
+- **AND** SHALL record basic database information
+- **AND** SHALL log connection failures with error messages
+
+#### Scenario: Database error logging
+- **WHEN** database operations fail
+- **THEN** the system SHALL log the error type and basic information
+- **AND** SHALL record the operation that failed
+- **AND** SHALL avoid logging sensitive database data
+
+### Requirement: User Operation Logging
+The system SHALL log key user actions for troubleshooting user experience issues.
+
+#### Scenario: User authentication logging
+- **WHEN** users attempt to log in
+- **THEN** the system SHALL log login attempts and results
+- **AND** SHALL record authentication failures with basic error info
+- **AND** SHALL not log sensitive user credentials
+
+#### Scenario: Image generation logging
+- **WHEN** users generate images
+- **THEN** the system SHALL log generation requests and basic parameters
+- **AND** SHALL record API call results
+- **AND** SHALL log generation failures with error information
+
+### Requirement: Error Handling Logging
+The system SHALL provide basic error logging for troubleshooting common issues.
+
+#### Scenario: Basic exception logging
+- **WHEN** key exceptions occur
+- **THEN** the system SHALL log the exception type and message
+- **AND** SHALL record the operation context
+- **AND** SHALL avoid overly detailed stack traces
+
+#### Scenario: Configuration error logging
+- **WHEN** configuration loading fails
+- **THEN** the system SHALL log the configuration error
+- **AND** SHALL record the file path and error details
+- **AND** SHALL provide fallback behavior information
+
+### Requirement: Simple Configuration
+The system SHALL provide basic logging configuration options.
+
+#### Scenario: Logging configuration management
+- **WHEN** the application starts
+- **THEN** the system SHALL load logging settings from config.json
+- **AND** SHALL support enabling/disabling the logging system
+- **AND** SHALL support basic log level configuration
+
+#### Scenario: Log level control
+- **WHEN** different logging needs arise
+- **THEN** the system SHALL support switching between INFO, WARNING, ERROR levels
+- **AND** SHALL allow enabling DEBUG level for development
+- **AND** SHALL apply configuration changes immediately
+
+### Requirement: Cross-Platform Compatibility
+The logging system SHALL work consistently across Windows, macOS, and Linux platforms.
+
+#### Scenario: Simple cross-platform behavior
+- **WHEN** running on different operating systems
+- **THEN** the system SHALL use standard file permissions
+- **AND** SHALL handle basic path and encoding issues
+- **THEN** SHALL create logs in application directory
+
+#### Scenario: Log file readability
+- **WHEN** users need to view log files
+- **THEN** the system SHALL ensure log files are readable by text editors
+- **AND** SHALL use UTF-8 encoding for character support
+- **AND** SHALL keep log format simple and clear
\ No newline at end of file

+## 1. 简单日志系统实现
+- [ ] 1.1 创建简单的日志初始化函数
+- [ ] 1.2 实现单一日志文件（logs/app.log）
+- [ ] 1.3 设置基础日志格式化器
+- [ ] 1.4 实现简单的文件轮转（10MB大小限制）
+- [ ] 1.5 创建 logs/ 目录
+
+## 2. 基础日志级别
+- [ ] 2.1 实现 INFO、WARNING、ERROR 三个主要级别
+- [ ] 2.2 可选 DEBUG 级别用于开发调试
+- [ ] 2.3 实现简单的日志级别控制
+- [ ] 2.4 添加控制台输出选项
+- [ ] 2.5 实现日志启用/禁用开关
+
+## 3. 集成到关键模块
+- [ ] 3.1 DatabaseManager 集成：记录连接状态和错误
+- [ ] 3.2 ImageGeneratorWindow 集成：记录用户关键操作
+- [ ] 3.3 ImageGenerationWorker 集成：记录API调用结果
+- [ ] 3.4 HistoryManager 集成：记录文件操作状态
+- [ ] 3.5 主函数集成：记录应用启动和退出
+
+## 4. 错误处理日志
+- [ ] 4.1 为主要异常添加基本日志记录
+- [ ] 4.2 记录关键错误信息（无需完整堆栈）
+- [ ] 4.3 添加配置加载错误日志
+- [ ] 4.4 记录网络和API调用错误
+- [ ] 4.5 记录文件操作失败信息
+
+## 5. 配置集成
+- [ ] 5.1 在 config.json 中添加基础日志配置
+- [ ] 5.2 实现日志启用/禁用开关
+- [ ] 5.3 添加日志级别配置选项
+- [ ] 5.4 实现日志文件大小限制配置
+- [ ] 5.5 集成日志配置到启动流程
+
+## 6. 基础性能优化
+- [ ] 6.1 确保日志不阻塞主线程
+- [ ] 6.2 只在关键操作时记录日志
+- [ ] 6.3 使用简单的日志格式
+- [ ] 6.4 避免过度详细的日志记录
+- [ ] 6.5 测试日志对性能的影响
+
+## 7. 测试和验证
+- [ ] 7.1 测试日志文件创建和基本写入
+- [ ] 7.2 验证日志文件轮转功能
+- [ ] 7.3 测试不同级别日志输出
+- [ ] 7.4 验证错误日志记录功能
+- [ ] 7.5 确保日志不影响正常功能
+
+## 8. 简单文档
+- [ ] 8.1 创建日志系统简要说明
+- [ ] 8.2 编写常见问题排查指南
+- [ ] 8.3 创建日志配置说明
+- [ ] 8.4 编写基本调试方法
+- [ ] 8.5 更新README中的故障排查部分
\ No newline at end of file

+## Design Document: Standalone History Browsing Interface
+
+### Context
+当前历史记录实现允许用户双击历史项目将其加载到图片生成界面，但这会干扰用户的当前工作状态。用户希望历史记录作为纯粹的浏览功能，直接在历史记录界面中查看完整信息。
+
+### Goals / Non-Goals
+**Goals:**
+- 提供独立的历史记录浏览功能
+- 在历史记录界面直接显示prompt、参考图和生成图
+- 支持prompt文本复制功能
+- 保持与图片生成功能的完全隔离
+- 提供直观的图片预览和详情展示
+
+**Non-Goals:**
+- 不再支持从历史记录加载到生成界面
+- 不修改现有的图片生成工作流程
+- 不增加复杂的编辑功能
+
+### Decisions
+
+#### 1. 界面重构方案
+**Decision**: 重新设计历史记录标签页为详情浏览模式
+- **Why**: 避免界面间的操作干扰，提供更清晰的用户体验
+- **Alternatives considered**: 弹窗详情、侧边栏详情页
+- **Chosen approach**: 在历史记录标签页内实现完整的详情显示
+
+#### 2. 信息展示布局
+**Decision**: 采用上下布局：历史列表在上（显示生成图预览），详情展示在下
+- **Why**: 类似文件管理器的熟悉交互模式，预览图让用户快速识别内容
+- **Alternatives considered**: 左右分栏、全屏切换、纯列表模式
+- **Chosen approach**: 固定比例的上下分割布局，列表项显示生成图缩略图
+
+#### 3. 交互方式
+**Decision**: 单击选择历史项显示详情，双击或右键提供额外操作
+- **Why**: 提供清晰的选择反馈和操作入口
+- **Alternatives considered**: 仅单击、仅右键菜单
+- **Chosen approach**: 简单的单击选择 + 右键菜单操作
+
+### Technical Architecture Details
+
+#### 新的UI组件结构
+```
+历史记录标签页
+├── 工具栏 (刷新、清空、删除)
+├── 分割器 (QSplitter)
+│   ├── 上部: 历史记录列表 (QListWidget)
+│   │   ├── 每个列表项显示:
+│   │   │   ├── 生成图片缩略图 (120x120)
+│   │   │   ├── 时间戳
+│   │   │   └── Prompt前20个字符
+│   │   └── 悬停显示完整信息
+│   └── 下部: 详情展示区域 (QWidget)
+│       ├── Prompt区域 (QTextEdit + 复制按钮)
+│       ├── 参数信息 (宽高比、尺寸)
+│       ├── 参考图片区域 (QScrollArea)
+│       └── 生成图片大预览 (QLabel)
+```
+
+#### 数据流设计
+1. **选择历史项**: 用户点击列表项 → 加载详细数据 → 更新详情区域
+2. **复制Prompt**: 点击复制按钮 → 复制到剪贴板 → 显示成功提示
+3. **删除操作**: 右键菜单删除 → 确认对话框 → 更新列表和详情
+
+### Risks / Trade-offs
+- **[界面复杂度]** → 通过清晰的布局和分组来管理
+- **[图片加载性能]** → 实现延迟加载和缓存机制
+- **[用户体验]** → 提供清晰的视觉反馈和操作提示
+
+### Implementation Plan
+1. **Phase 1**: 移除现有的加载到界面功能
+2. **Phase 2**: 重新设计历史记录标签页UI
+3. **Phase 3**: 实现详情展示功能
+4. **Phase 4**: 添加复制和操作功能
+5. **Phase 5**: 测试和优化
+
+### Open Questions
+- 历史记录列表和详情区域的比例应该是多少？
+- 是否需要添加历史记录的搜索功能？
+- 如何处理大量历史记录时的性能问题？
\ No newline at end of file

+# Change: Refactor History Browsing to Standalone Interface
+
+## Why
+当前的历史记录实现会干扰原有的图片生成界面，用户希望历史记录作为一个独立的浏览界面，直接显示prompt、参考图和生成图，而不需要加载到原有界面中，避免操作冲突和界面混乱。
+
+## What Changes
+- 重新设计历史记录界面为独立的详情浏览模式
+- 移除历史记录加载到原有界面的功能
+- 在历史记录标签页中直接显示完整信息：
+  - Prompt文本（支持复制）
+  - 参考图片缩略图
+  - 生成图片大图预览
+- 保持两个功能完全独立，互不干扰
+
+## Impact
+- **Affected specs**:
+  - `history-interface` (MODIFIED: 改为独立浏览模式)
+  - `user-interface` (MODIFIED: 移除界面间加载功能)
+- **Affected code**:
+  - `image_generator.py:1447-1484` (移除 load_history_item 方法中加载到界面的逻辑)
+  - `image_generator.py:1033` (重新设计历史记录标签页UI)
+  - 新增独立的历史记录详情显示组件
\ No newline at end of file

+## MODIFIED Requirements
+
+### Requirement: Standalone History Browsing Interface
+The system SHALL provide a standalone history browsing interface that displays complete information without interfering with the image generation interface.
+
+#### Scenario: History item selection for detail viewing
+- **WHEN** the user clicks on a history item
+- **THEN** the system SHALL display detailed information in the details panel
+- **AND** SHALL not modify any controls in the image generation interface
+- **AND** SHALL show the complete prompt text, reference images, and generated image
+
+#### Scenario: Independent interface operation
+- **WHEN** the user switches between generation tab and history tab
+- **THEN** the system SHALL preserve the state of each tab independently
+- **AND** SHALL not load history data into generation controls
+- **AND** SHALL maintain separate user contexts for each tab
+
+## REMOVED Requirements
+
+### Requirement: History Item Loading to Generation Interface
+**Reason**: This feature interferes with the user's current work state and creates confusing interactions. Users want history as a pure browsing feature.
+
+**Migration**: Replace with standalone detail viewing within the history tab.
+
+## ADDED Requirements
+
+### Requirement: History List with Image Previews
+The system SHALL display generated image thumbnails directly in the history list for quick visual identification.
+
+#### Scenario: History item thumbnail display
+- **WHEN** the history list is loaded
+- **THEN** the system SHALL display a 120x120 pixel thumbnail of each generated image
+- **AND** SHALL include the timestamp and prompt preview (first 20 characters)
+- **AND** SHALL maintain consistent thumbnail sizing and aspect ratio
+
+#### Scenario: Image thumbnail loading
+- **WHEN** loading history items
+- **THEN** the system SHALL generate thumbnails efficiently
+- **AND** SHALL show loading indicators for slow-loading images
+- **AND** SHALL handle missing or corrupted image files gracefully
+
+### Requirement: Prompt Text Display and Copy
+The system SHALL display the full prompt text for each history item with copy functionality.
+
+#### Scenario: Prompt text display
+- **WHEN** a history item is selected
+- **THEN** the system SHALL display the complete prompt text in a dedicated area
+- **AND** SHALL format the text for easy reading
+- **AND** SHALL show prompt length and creation time
+
+#### Scenario: Prompt text copying
+- **WHEN** the user clicks the copy button
+- **THEN** the system SHALL copy the full prompt text to clipboard
+- **AND** SHALL show a success confirmation message
+- **AND** SHALL maintain the original prompt formatting
+
+### Requirement: Reference Images Gallery
+The system SHALL display reference images used in the generation process.
+
+#### Scenario: Reference images display
+- **WHEN** a history item with reference images is selected
+- **THEN** the system SHALL display all reference images as thumbnails
+- **AND** SHALL allow viewing full-size images on double-click
+- **AND** SHALL show "No reference images" when none exist
+
+#### Scenario: Reference image interaction
+- **WHEN** the user double-clicks a reference image thumbnail
+- **THEN** the system SHALL open the image in system default viewer
+- **AND** SHALL handle missing image files gracefully
+
+### Requirement: Generated Image Preview
+The system SHALL provide a large preview of the generated image within the history interface.
+
+#### Scenario: Generated image display
+- **WHEN** a history item is selected
+- **THEN** the system SHALL display the generated image in a large preview area
+- **AND** SHALL scale the image appropriately for the available space
+- **AND** SHALL maintain image aspect ratio
+
+#### Scenario: Generated image interaction
+- **WHEN** the user double-clicks the generated image preview
+- **THEN** the system SHALL open the image in system default viewer
+- **AND** SHALL handle missing image files with appropriate error messages
+
+### Requirement: History Item Details Panel
+The system SHALL provide a comprehensive details panel for selected history items.
+
+#### Scenario: Details panel layout
+- **WHEN** the history tab is opened
+- **THEN** the system SHALL display a split-view interface
+- **AND** SHALL show history list with image previews in the upper portion
+- **AND** SHALL show details panel in the lower portion
+- **AND** SHALL maintain responsive proportions
+
+#### Scenario: Enhanced hover information
+- **WHEN** the user hovers over a history list item
+- **THEN** the system SHALL display comprehensive tooltip information
+- **AND** SHALL include full prompt text, timestamp, aspect ratio, and image size
+- **AND** SHALL provide quick visual preview without requiring selection
+
+#### Scenario: Empty state handling
+- **WHEN** no history item is selected
+- **THEN** the system SHALL display helpful placeholder text
+- **AND** SHALL guide user to select an item for details
+- **AND** SHALL maintain a clean, uncluttered interface
+
+### Requirement: Independent Tab Management
+The system SHALL ensure complete independence between generation and history tabs.
+
+#### Scenario: Tab switching preservation
+- **WHEN** the user switches between tabs
+- **THEN** the system SHALL preserve all input fields and selections
+- **AND** SHALL not transfer data between interfaces
+- **AND** SHALL maintain separate operational contexts
+
+#### Scenario: Concurrent operation support
+- **WHEN** a history item is being viewed
+- **THEN** the user SHALL still be able to work in the generation tab
+- **AND** SHALL not have their work interrupted by history browsing
+- **AND** SHALL experience smooth tab transitions
\ No newline at end of file

+## 1. 移除干扰性功能
+- [ ] 1.1 移除历史记录双击加载到原有界面的功能
+- [ ] 1.2 移除 load_history_item 方法中的界面设置逻辑
+- [ ] 1.3 更新历史记录项的交互提示和工具提示
+- [ ] 1.4 保留右键菜单中的删除和文件管理器功能
+
+## 2. 重新设计历史记录UI
+- [ ] 2.1 重新设计 setup_history_tab 方法，添加分割器布局
+- [ ] 2.2 创建历史记录详情展示区域
+- [ ] 2.3 修改历史列表项显示：添加生成图缩略图+时间戳+Prompt预览
+- [ ] 2.4 添加Prompt文本显示区域和复制按钮
+- [ ] 2.5 创建参考图片和生成图片的预览区域
+- [ ] 2.6 设置合适的布局比例和样式
+- [ ] 2.7 优化悬停提示信息，包含完整详情
+
+## 3. 实现详情展示功能
+- [ ] 3.1 实现单击历史项显示详情的逻辑
+- [ ] 3.2 实现Prompt文本的显示和格式化
+- [ ] 3.3 实现参考图片缩略图的加载和显示
+- [ ] 3.4 实现生成图片的大图预览功能
+- [ ] 3.5 添加生成参数信息显示
+
+## 4. 添加交互功能
+- [ ] 4.1 实现Prompt文本复制功能
+- [ ] 4.2 添加复制成功的视觉反馈
+- [ ] 4.3 实现参考图片和生成图片的双击放大查看
+- [ ] 4.4 更新右键菜单，移除加载选项
+- [ ] 4.5 添加刷新详情的功能
+
+## 5. 优化用户体验
+- [ ] 5.1 实现无选中状态时的提示信息
+- [ ] 5.2 添加加载状态的指示器
+- [ ] 5.3 优化图片加载性能和缓存
+- [ ] 5.4 调整界面布局的响应式设计
+- [ ] 5.5 添加键盘快捷键支持
+
+## 6. 测试和验证
+- [ ] 6.1 测试历史记录浏览的独立性
+- [ ] 6.2 验证不会干扰图片生成界面
+- [ ] 6.3 测试复制功能的准确性
+- [ ] 6.4 验证图片显示的正确性
+- [ ] 6.5 测试大量历史记录的性能表现
+
+## 7. 文档和清理
+- [ ] 7.1 更新历史记录功能的使用说明
+- [ ] 7.2 清理不再使用的代码和方法
+- [ ] 7.3 验证所有功能正常工作
+- [ ] 7.4 确保UI一致性和用户体验
\ No newline at end of file

+#!/usr/bin/env python3
+"""
+测试配置文件加载逻辑
+"""
+import json
+import sys
+import tempfile
+from pathlib import Path
+
+# 模拟PyInstaller环境
+sys.frozen = True
+sys._MEIPASS = "C:\\Users\\Shady\\PycharmProjects\\GoogleNanoBananaApp"  # 模拟路径
+
+# 导入配置加载逻辑
+def test_config_loading():
+    """测试配置文件加载的多种路径"""
+
+    # 模拟exe所在目录的config.json
+    exe_dir_config = Path(sys.executable).parent / 'config.json' if hasattr(sys, 'executable') else None
+
+    # 模拟_MEIPASS目录的config.json
+    meipass_config = Path(sys._MEIPASS) / 'config.json'
+
+    print(f"模拟PyInstaller环境:")
+    print(f"  sys.frozen: {getattr(sys, 'frozen', False)}")
+    print(f"  sys._MEIPASS: {sys._MEIPASS}")
+
+    # 测试各个路径
+    test_paths = []
+    if hasattr(sys, 'executable'):
+        test_paths.append(("exe目录", Path(sys.executable).parent / 'config.json'))
+
+    test_paths.append(("_MEIPASS目录", Path(sys._MEIPASS) / 'config.json'))
+    test_paths.append(("当前目录", Path('.') / 'config.json'))
+
+    for name, path in test_paths:
+        if path.exists():
+            print(f"[OK] {name}: {path} - 存在")
+            try:
+                with open(path, 'r', encoding='utf-8') as f:
+                    config = json.load(f)
+                    db_config = config.get("db_config")
+                    if db_config:
+                        print(f"  [OK] 包含数据库配置: {db_config.get('host', 'N/A')}")
+                    else:
+                        print(f"  [FAIL] 未包含数据库配置")
+            except Exception as e:
+                print(f"  [FAIL] 读取失败: {e}")
+        else:
+            print(f"[FAIL] {name}: {path} - 不存在")
+
+if __name__ == "__main__":
+    test_config_loading()
\ No newline at end of file

@@ -285,6 +285,13 @@ QPushButton[variant="ghost"]:hover {{
     color: {c['accent']};
 }}
 
+/* 短暂成功反馈（"已复制"等，2秒后回退）*/
+QPushButton[variant="success-flash"] {{
+    background-color: {c['success']};
+    color: white;
+    border: 1px solid {c['success']};
+}}
+
 /* 链接按钮 — 像超链接 */
 QPushButton[variant="link"] {{
     background-color: transparent;
@@ -601,6 +608,70 @@ QSplitter::handle:vertical {{
     background: {c['bg_subtle']};
     border-radius: {s['radius_md']};
 }}
+
+/* ========== 参考图拖拽区（drag_state property）========== */
+#referenceImageDrop[drag_state="idle"] {{
+    border: 2px dashed {c['border_default']};
+    border-radius: {s['radius_md']};
+    background-color: {c['bg_subtle']};
+}}
+#referenceImageDrop[drag_state="idle"]:hover {{
+    border: 2px dashed {c['accent']};
+    background-color: {c['accent_subtle']};
+}}
+#referenceImageDrop[drag_state="active"] {{
+    border: 2px dashed {c['accent']};
+    border-radius: {s['radius_md']};
+    background-color: {c['accent_subtle']};
+}}
+
+/* ========== 已生成图片缩略图卡 ========== */
+QLabel[role="thumb"] {{
+    border: 1px solid {c['border_default']};
+    border-radius: {s['radius_sm']};
+    background-color: {c['bg_surface']};
+}}
+QLabel[role="thumb_index"] {{
+    color: {c['text_secondary']};
+    font-size: {s['font_base']};
+    font-weight: 600;
+}}
+
+/* ========== 预览区生成图（result_label / generated_image_label）========== */
+QLabel#previewImage {{
+    background-color: {c['bg_subtle']};
+    border: 1px solid {c['border_default']};
+    border-radius: {s['radius_md']};
+    color: {c['text_tertiary']};
+}}
+QLabel#previewImage[has_image="true"] {{
+    background-color: {c['bg_canvas']};
+    border-color: {c['border_default']};
+}}
+
+/* ========== 历史详情提示词显示框 ========== */
+QLabel#promptDisplay {{
+    background-color: {c['bg_subtle']};
+    border: 1px solid {c['border_default']};
+    border-radius: {s['radius_md']};
+    padding: 8px 10px;
+    color: {c['text_primary']};
+}}
+
+/* ========== 缩略图删除按钮（20x20 紧凑）========== */
+QPushButton#thumbDeleteBtn {{
+    background-color: {c['danger']};
+    color: white;
+    border: none;
+    border-radius: 3px;
+    padding: 0;
+    min-height: 0;
+    font-size: {s['font_xs']};
+    font-weight: 700;
+}}
+QPushButton#thumbDeleteBtn:hover {{
+    background-color: {c['danger_hover']};
+}}
 """