refactor: replace all wcrp-rag references with core-rag naming

docs: add README and improve CLAUDE.md with architectural details

docs: comprehensive CLAUDE.md with full project documentation

feat: add integration test for config → indexer pipeline

feat: add config template and evaluation framework

feat: REST + SSE server adapted from WCRP-RAG

feat: deploy script for GCP VM

feat: add reindex, context generator, and summary generator

feat: config-driven MCP server with dynamic tools

feat: config-driven retriever with dynamic filters and fields

feat: LLM-powered corpus analyzer generates initial config

feat: config-driven indexer with dynamic entity extraction

feat: copy parser and utility scripts from WCRP-RAG (domain-agnostic)

feat: add config loader with entity extraction and validation

chore: initial project scaffolding