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v2.0 — RAG platform transformation

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@sandeep-jay sandeep-jay released this 01 Jun 00:04
v2.0
a2bf78c

v2.0 — RAG platform transformation

Tag: v2.0 · Date: 2026-05-19

Summary

Major platform evolution from the upstream chabot fork into Campus RAG Assistant — a production-style enterprise RAG platform with Vue product UI, multicloud provider boundaries, LangGraph orchestration, RAGAS evaluation, and GitHub Actions CI/CD.

Highlights

Product & UI

  • Vue 3 SPA — streaming chat, session sidebar, source panels (Sources + Content tabs), feedback, OAuth handoff
  • Opt-in web research — per-message toggle with visible disclaimer banner
  • GitHub OAuth — dev OAuth on API port with one-time handoff to Vue

RAG engineering

  • LangGraph pipeline — condense → multi-query → retrieve → rerank → generate → format
  • Dual RAG engines — RAG_ENGINE=chain (true SSE) and langgraph (observable stages)
  • Provider registry — AWS Bedrock KB, Azure AI Search + OpenAI, mock mode for CI/local
  • Multi-query + RRF fusion — improved retrieval coverage

Platform & ops

  • Alembic migrations — schema versioning for PostgreSQL
  • Prometheus metrics — /api/metrics, request IDs, structured logging
  • GitHub Actions CI/CD — tox (lint, backend, frontends) + gitleaks on every PR
  • MkDocs site — GitHub Pages documentation

Evaluation & quality

  • RAGAS golden-set harness — 10-question regression baseline
  • Phase 5 retrieval tuning — AWS context_recall improved to 0.80 (passes gate)
  • LangSmith traces — per-node spans on LangGraph path; waterfall screenshots in README

Documentation

  • Architecture diagrams (v1/v2), screenshot gallery, ADRs (001–004), portfolio case study, reviewer guide

Architecture

See architecture/v2/overview.png and detailed.png.

What came next

v3 added the bounded helpdesk agent (LangGraph supervisor, HITL ticket filing, Ask/Agent mode) on top of this RAG platform.

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