Rename to docai_toolkit and add Docker/packaging

Author: novatechflow

CHANGELOG.md

@@ -0,0 +1,17 @@
+# Changelog
+
+## 0.1.0
+### Added
+- New `docai_toolkit` package with OCR (local Tesseract or remote endpoint), embeddings/indexing (local or remote), and chat over FAISS.
+- GUI updates: OCR → Markdown flow, chat with docs, settings persistence to `~/.docai/config.json`, background threads for OCR/chat, and HF/custom endpoint support.
+- Dockerfile (non-root) and GitHub Actions workflows for Docker build and PyPI trusted publishing.
+- `pyproject.toml` packaging with console entrypoint `docai-viewer`.
+- Tests for PDF writer, remote OCR parsing, and remote embeddings.
+
+### Changed
+- Renamed from `docai` to `docai_toolkit` to avoid PyPI naming conflicts.
+- Hardened HF client (timeouts/errors), safer FAISS load (no dangerous deserialization), and remote embedding batching.
+- README refresh with install, HF onboarding, Docker/XQuartz instructions, and macOS GUI notes.
+
+### Removed
+- Legacy training scripts and legacy `pdf_ui.py` entrypoint.