v1.3.0 - Agentic RAG, multi-user storage, and verified OKX payments

Japanese Word Master v1.3.0

This release turns the project from a local verb tool into a deployed, multi-user
Agentic RAG learning application.

Highlights

• Added a LangGraph learning workflow with Planner, Researcher, Tutor, and
  Memory Manager nodes.
• Added local hybrid RAG with FTS5, sqlite-vec, RRF fusion, reranking,
  citations, abstention, and evaluation history.
• Added Supabase PostgreSQL persistence for accounts, practice records, SRS
  cards, Agent memory, run/task history, orders, and entitlements.
• Added isolated guest identities, in-place registration upgrades, rate limits,
  and Cloudflare Turnstile registration protection.
• Added verified OKX deposit payments using a read-only Funding API, TxID
  matching, duplicate prevention, and automatic entitlement unlock.
• Added user-provided LLM keys stored in the browser and request-scoped provider
  configuration.
• Added the Render single-service deployment used by the live demo.
• Added repository-level AGENTS.md guidance with scoped verification and
  deployment smoke-test rules.
• Simplified the interface copy and rewrote the README around architecture,
  measurable retrieval results, setup, deployment, and security boundaries.

Quality

• 112 backend tests passing.
• Frontend production build verified.
• Desktop and 390 px mobile layouts checked.
• Production deployment verified on Render with PostgreSQL and the OKX provider.

Live Demo

https://japanese-verb-master.onrender.com

Security

OKX keys require read-only permission. Do not enable trading or withdrawal
permissions, and never commit provider credentials or database URLs.