Dev-merge

[Enimdisy]

Summary / 概述

• Merged dev (2026-04-27) and latest main (2026-04-28) into a new integration branch, resolving conflicts while preserving both feature sets.
• Fixed settings/API issues introduced during merge:
  • Removed duplicated kwargs in backend settings response that caused update failures.
  • Removed duplicated default/log keys in settings service to stabilize config persistence.
• Fixed frontend route/API compatibility under /nanadraw:
  • Added route compatibility for /nanadraw, /nanadraw/projects, /nanadraw/draw.
  • Added API fallback logic (/nanadraw/api/... -> /api/...) for settings and PDF parsing calls.
• Fixed MinerU PDF parsing reliability:
  • Root-caused PDF 解析失败: ConnectError to httpx env proxy inheritance on result-zip download stage.
  • Updated MinerU client to use trust_env=False and improved network/timeout error messages.
• Added PDF UX improvement:
  • Added Select All / 全选 for parsed PDF text so users can quote the full content in one click.
  • Added bilingual i18n strings for the new button.

Type / 类型

• Bug fix / 修复问题
• New feature / 新功能
• Enhancement / 增强
• Refactoring / 重构
• Documentation / 文档

Test Plan / 测试计划

• Backend: cd backend && python -c "from app.main import app"
• Frontend: cd frontend && npx tsc --noEmit (equivalent run: corepack pnpm type-check)
• Full test: python start.py and verify UI

Additional validation performed:

• Backend syntax check: python3 -m py_compile ...
• Frontend unit test: cd frontend && corepack pnpm test -- src/services/api.test.ts
• Manual API verification:
  • PUT /api/v1/settings/llm-config returns success
  • POST /api/v1/documents/parse-pdf returns 200 with parsed markdown after MinerU fix

Checklist

• Code follows project conventions
• Comments are in English
• UI text is bilingual (zh/en)
• No hardcoded secrets

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