v0.2.1 — Cached Signed URLs, Simplified Naming, Polished Docs

🚀 ReadPaper v0.2.1

What is ReadPaper?

An AI-powered tool that translates arXiv papers from English to Chinese while preserving the original LaTeX layout — equations, citations, figures all stay pixel-perfect. Powered by Gemini 3.0 Flash with 1M-token context.

✨ Highlights in v0.2.1

⚡ Cached Signed URL PDF Delivery

• PDFs now served via GCS signed URLs — browser downloads directly from storage (1 hop, no backend proxy)
• Module-level credential caching + 12-min URL cache = near-instant responses on repeat access
• Fallback to direct streaming if signing fails

📛 Simplified PDF Naming

• Translated PDFs are now consistently named {arxiv_id}_zh.pdf
• Version suffixes (v1, v2) are stripped from output filename
• Single-candidate lookup (no more v1–v5 scanning)

📚 Polished Documentation

• README: attractive badges, live demo link, architecture diagram, feature highlights
• ARCHITECTURE: Mermaid flow diagrams, IPC protocol, signed URL delivery flow, storage layout

📊 Since v0.1

Metric	Value
Commits	11
Files changed	20+
Lines	+2500 / -800

Key Features

• 🧠 Whole-file LaTeX translation — one Gemini API call per .tex file
• 🔄 AI compile fix loop — auto-fixes LaTeX errors (3 retries)
• ⚡ GCS signed URL delivery — cached, 1-hop PDF loading
• 🔐 Google OAuth — per-user paper libraries
• 📊 Admin dashboard — user/paper management
• 📈 Live token tracking — real-time Gemini usage
• 💾 Translation cache — skip re-translation for cached papers
• 📖 Split-view reader — side-by-side EN/中文 with zoom & notes