rag-cli 2.0.0 crashes during project indexing

[Sinabehzadifard]

rag-cli 2.0.0 crashes during project indexing
Error: vector_store.add() receives embeddings instead of documents (type mismatch)
Wasted significant tokens debugging before realizing it's a plugin bug!
Claude Code version (claude --version)
OS (Windows)
File types you were indexing (R, PDF, LaTeX, MD, DOCX)

Summary of changes:

Bug Fixes

1. fcntl import breaks on Windows (tavily_connector.py)

• fcntl is Unix-only. Replaced with conditional import (sys.platform != "win32").
• Removed fcntl.flock() file-locking calls (replaced with plain file writes — threading already
  handled by singleton lock).

2. langchain.text_splitter import fails on langchain ≥0.2 (document_processor.py)

• RecursiveCharacterTextSplitter moved to langchain_text_splitters package.
• Fixed with try/except fallback: tries new package path first, falls back to legacy.

3. vector_store.add() called with wrong signature (rag_project_indexer.py)

• Signature is add(embeddings, texts, metadata) — code was passing add(embeddings, metadata), so
  texts slot received metadata dicts → "Expected document to be a str" error.
• Fixed: pass texts as second positional argument.

New Feature

4. Local file indexing (rag_project_indexer.py)

• Indexer previously only detected Python/JS/TS/Rust/Go/Java via manifest files. Projects using R,
  LaTeX, Markdown, notebooks, PDFs, DOCX got 0 technologies → early exit, nothing indexed.
• Added LocalFileIndexer class that walks the project directory and indexes: .md, .tex, .R, .py,
  .bib, .txt, .yaml, .json, .csv, .html, .pdf, .docx, .ipynb.
• Tech detection failure no longer blocks indexing — local files always indexed regardless.
• Skips: .git, pycache, archive dirs, binary/build artifacts, files >5 MB.

Config

5. config/default.yaml missing

• Indexer printed warning on every run; config module fell back to defaults silently.
• Created config/default.yaml in project root with explicit settings (chunk size, embeddings model,
  ChromaDB backend, online docs disabled).