Gallery notebooks: require this release, play showcase animations; faster CI

[jeremymanning]

Docs and CI only; the package code is unchanged from 1.1.0 as published on PyPI.

What changed

• Gallery notebooks install this release. The install cell was %pip install -q "hypertools[interactive]". A runtime that already had 1.0.0 reported the requirement satisfied, and the 1.1 examples failed (Normalize.__init__() got an unexpected keyword argument 'mode'). The generated cell now reads hypertools[interactive]>=<version>, and the release checker rejects an install line without a version floor.
• Showcase notebooks play their animation. Six animated examples end with fig = anim.figure inside the main block, which displays nothing in a notebook; the docs page shows the animation only because the docs build captures it. The docs build now appends a final anim cell to those notebooks, which Jupyter and Colab render as an inline video.
• CI. The ubuntu / Python 3.12 job ran the full suite three times in a row (plain, the pandas-3 gate, coverage), about two hours. It now runs once, with the pandas-3 gate and coverage in the same pass.

The published v1.1.0 Colab notebooks on docs-notebooks were already patched the same way. After this merges, master and the v1.1.0 tag move to the new commit so the docs pages' downloadable notebooks match; no new PyPI upload.

Verification

Check	Result
Changed and new test files	60 passed locally
Real two-example docs build	the playback cell is in the generated notebook and in its downloadable copy
Colab, morph zoo notebook	plays a 30-second inline video
Inline render with the PyPI package, locally	4 s to 235 s across the six notebooks; all under the embed limit
ruff	clean

🤖 Generated with Claude Code