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chore(pydeck): migrate dev setup, CI, and ReadTheDocs to uv (#10186)

* chore(pydeck): switch dev setup from pip/venv to uv

uv manages its own Python, so the dev environment uses Python 3.13
regardless of the system Python. This fixes black (and other tools)
failing to install on Python 3.14 systems.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(pydeck): fix CI failures with Python 3.13 and uv

- Replace distutils imports with setuptools equivalents (distutils
  was removed in Python 3.12+)
- Pin y-py==0.6.0 to avoid broken pyproject.toml in 0.6.2 that uv
  cannot parse
- Add setuptools as explicit dev dependency (not bundled in uv venvs)
- Remove dead Python 2/3.4 version markers from extras_require

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(pydeck): use uv pip install -e . instead of setup.py develop

setuptools develop command internally shells out to pip, which is not
available in uv-managed venvs. Use uv pip install -e . directly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(pydeck): copy JS bundle after yarn build in Makefile

The old setup.py develop command had a FrontendBuild step that copied
index.js from jupyter-widget/dist into pydeck/nbextension/static.
With uv pip install -e . this no longer runs, so add an explicit
copy-bundle target to the Makefile.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(pydeck): put uv-managed Python 3.13 on CI PATH for pydeck-carto

pydeck-carto pins flake8==4.0.1 which is incompatible with Python 3.12+.
Previously setup-python provided 3.8, but we removed it. Install Python
3.13 via uv and put it on PATH so pydeck-carto's venv also uses 3.13.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore(pydeck-carto): switch dev setup from pip/venv to uv

Mirrors the pydeck uv migration. Uses uv venv --python 3.13 and
uv pip install, fixing flake8==4.0.1 incompatibility with system
Python 3.12+ on CI runners.

Co-Authored-By: Cla... (continued)

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