chore: fix CI failures and scholar repo for standalone packages

[ywatanabe1989]

CI Test Failures

Several standalone packages have failing CI due to missing test dependencies:

Package	Issue
scitex-types	numpy not in test deps
scitex-path	Test failures (pre-existing)
scitex-gists	Pre-existing test failure
scitex-core	Import errors in tests
scitex-db	Missing deps
scitex-scholar	Missing deps
scitex-audit	No tests (need [dev] extras with test tools)

Fix: Add missing dependencies to [project.optional-dependencies] dev = [...] in each package's pyproject.toml.

Scholar Repo Mismatch

The ~/proj/scitex-scholar repo points to github.com/ywatanabe1989/_SciTeX-Scholar (obsolete placeholder with TextProcessor/SearchEngine). The real scholar code (1039 files with Scholar/Paper/Papers) is still in scitex-python/src/scitex/scholar/.

Fix: Either:

1. Create a new clean scitex-scholar repo and populate with real code
2. Or overwrite the existing _SciTeX-Scholar repo contents

Related: ywatanabe1989/_SciTeX-Scholar#3