fengmengqi bf04400852 feat: OCR 模型按需下载 + 三层独立开关 + 日志持久化 + 原生浮层主题同步 + 文档重构

OCR 模型按需下载（P8 瘦身）：
- 移除 plugins/ppocr/assets/ 内置模型（det 9.8MB + rec 21MB + dict），APK 减包 ~31MB
- 新增 modelDownloader.ts：优先从 HuggingFace/CDN 下载，兜底从 APK assets 拷贝
- OcrModule.kt 新增 setModelDir，支持从 filesystem 加载模型，回退 assets 兼容旧用户
- settingsStore 持久化 ocrModelVersion / ocrModelDir
- 自动化页集成模型状态检查与一键下载 UI

OCR 三层独立控制：
- OcrProcessorConfig 从单一 aiVisionEnabled 拆分为 layer1/2/3 三个独立开关
- 设置页可按层启停（L1 正则规则 / L2 本地 OCR / L3 AI Vision）
- OCR 处理增加耗时与字符数日志

日志系统升级：
- logger.ts 新增 LogFileBackend 抽象，支持磁盘持久化（按日期 app-YYYY-MM-DD.log）
- 新增 logBackend.ts（ExpoLogFileBackend）+ 日志中心页 settings/logs.tsx
- 日志中心：实时缓冲 + 历史文件、4 级过滤、Tag/关键词搜索、JSON 展开、分享导出、7 天过期清理
- _layout.tsx 启动时初始化文件后端 + 日志脱敏（验证码/卡号）

原生浮层 UI 主题同步（P6）：
- 新增 floatingUiConfig.ts：JS 侧从 theme tokens + i18n 构建 FloatingUiConfig 推送原生
- 新增 FloatingUiConfigStore.kt：SharedPreferences 存储，三浮层组件读取
- FloatingBillView 重设计：颜色/文案走配置、新增币种 chip、金额校验改 BigDecimal
- FloatingHelper / FloatingTip 同步适配
- _layout.tsx 新增 FloatingUiConfigSyncer，主题/语言切换自动推送

UI 与组件增强：
- FormModal 新增 select/dropdown 控件、行内布局（row/flex）、联动回调 onValuesChange
- 新增 Touchable 通用触摸组件、AccountCreateModal 快速建账弹窗
- 信用卡页展示账单周期/到期还款日/本期应还/剩余可用额度，关联账户改下拉选择
- AI 设置页重做：OpenAI/Gemini/DeepSeek 预设 + 默认 URL/模型
- 引导页新增 Android 权限检查步骤（无障碍/通知/短信/存储/悬浮窗）

去重优化：
- 对手方匹配改为模糊包含（includes），双方均无对手方时判定低置信度重复
- DedupResult 新增 matchedItem 返回匹配对比项

文档重构：
- README.md 重写为入口索引（品牌更新 + 模块概览 + 文档导航表）
- 新增 AGENTS.md（AI 助手贡献指南）、docs/architecture.md（Mermaid 数据流/分层/OCR 级联图）
- 新增 docs/development.md（环境/命令/编码规范/测试/提交规范）、plugins/README.md
- UI 重设计文档（design spec + p1-p8）移入 docs/design/

其他：
- i18n 新增权限/信用卡详情/日志中心/AI 设置等翻译键
- ppocr Config Plugin 修复 import 注入去重；size-optimization 增强
- 新增测试：logger.test.ts、floating-ui-config.test.ts

2026-07-23 19:03:38 +08:00

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Repository Guidelines

Project Overview

DriftLedger (浮记) is an offline-first mobile client for Beancount double-entry accounting, built with React Native + Expo (CNG), TypeScript, Zustand, and expo-sqlite. The app treats desktop-maintained .bean files as the read-only source of truth and appends new entries to main.bean.

Project Structure & Module Organization

Directory	Purpose
`src/domain/`	Pure business logic (ledger parser, bill pipeline, dedup, rules, OCR processor). No React/RN imports.
`src/app/`	Expo Router file-based routes; `(tabs)/` is bottom navigation.
`src/components/`	Reusable React Native UI components and charts.
`src/store/`	Zustand stores (ledger, import, settings, metadata, automation).
`src/services/`	Platform-facing concerns (sync, backup, security, OCR bridge).
`src/storage/`	SQLite read-cache with versioned migrations.
`src/theme/`	Token-based theming system.
`src/i18n/`	zh/en localization dictionaries.
`plugins/`	Expo Config Plugins for native modules (ppocr, accessibility, sms-receiver, etc.).
`tests/`	Vitest unit tests (mock-backed, domain-focused).

Build, Test, and Development Commands

npm install --legacy-peer-deps   # Install dependencies (legacy-peer-deps required)
npm run start                    # Start Metro dev server
npm run android                  # Build & run on Android device/emulator
npm test                         # Run full Vitest suite
npm run typecheck                # TypeScript strict-mode check (tsc --noEmit)

# Run a single test file:
npx vitest run tests/ledger.test.ts

Coding Style & Naming Conventions

TypeScript strict mode is enabled; path alias @/* maps to src/*.
Money math uses string decimals (src/domain/decimal.ts) — never raw JS floats.
Domain layer (src/domain/) must remain pure: no React, RN, or Expo imports. Inject external dependencies via interfaces.
Code comments and plan.md are written in Chinese; match that convention.
New domain modules must be re-exported from src/domain/index.ts.
Native code lives exclusively in plugins/<name>/ as Expo Config Plugins — never edit generated android/ files directly.

Testing Guidelines

Framework: Vitest (no config file; picks up tests/**/*.test.ts by default).
Tests target the domain layer using mock backends (MemoryBackend, MockOcrEngine).
Name test files descriptively: <module-or-feature>.test.ts (e.g., decimal.test.ts, billPipeline.test.ts).
Run npm run typecheck after non-trivial changes to catch type regressions.

Commit & Pull Request Guidelines

Commit messages follow the pattern: feat: <concise summary in Chinese> with a detailed multi-line body listing changes by area.
Example: feat: 品牌重命名为浮记(DriftLedger)，全面升级精度安全与架构
PRs should describe what changed and why; link related issues. Include screenshots for UI changes.

Key Architectural Invariants

.bean files are the source of truth; SQLite is a disposable read-cache.
All bill ingestion funnels through BillPipeline (src/domain/billPipeline.ts) under a serialized mutex.
Every Config Plugin function must return config at the end.
IDs/checksums use FNV-1a hashing (hash() in ledger.ts), not crypto hashes.

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