fix: migrate CI off legacy isee-based workflow onto wads-managed uv CI

[thorwhalen]

Summary

Fixes #8: the legacy .github/workflows/ci.yml pinned Python 3.8 and installed an unpinned isee (which pulls in wads); the currently-published wads uses dict[str, Any] at module level, a TypeError on 3.8. Every push/PR has shown red CI for this reason regardless of what changed (since before #9 landed, gated on a local pytest run instead per that PR's own notes).

Migration (the durable-fix option from #8, following the wads-migrate skill):

• setup.cfg/setup.py → pyproject.toml (wads-migrate setup-to-pyproject), with the known rough edges fixed by hand: SPDX license string instead of the deprecated [project.license] table; project_name set to "oplot"; testpaths widened to ["oplot", "tests"] (the old CI actually ran pytest --doctest-modules $PROJECT_NAME, i.e. the package itself, so this preserves that doctest coverage); disabled the dead [tool.wads.ci.metrics] gate (config_path points at a file that doesn't exist, same pattern already fixed in git2py/focal).
• .github/workflows/ci.yml → the modern uv-based template (wads-migrate ci-to-uv).

Widening test collection to the package surfaced two real, pre-existing bugs invisible under the broken CI:

• oplot/my.py: import nympy as np (typo) made an already-orphaned, unimported module fail to even import. Fixed the typo; the module is still dead code (not referenced from oplot/__init__.py) and its one function (vlines) is still broken at runtime for an unrelated reason (a removed matplotlib hold= kwarg) — filed as a separate follow-up, oplot/my.py: vlines() is dead code and still broken (hold= kwarg removed from matplotlib) #10, rather than fixed here.
• oplot/plot_stats.py: smooth_scores's doctest asserted numpy<2.0's bare scalar repr ([1.5], [2, 3]); currently-installed numpy 2.x reprs scalars as np.float64(1.5) / np.int64(2). Not a logic bug — updated the expected values to match current numpy's actual (correct) behavior.

Also applied ruff format fleet-wide (quote style, blank lines) to satisfy the new CI's format-check gate — no logic changes.

Review

Independently reviewed by a second agent before landing. It ran the full suite (87 passed), spot-checked every format-only diff for semantic changes (none found), verified the numpy repr fix empirically (values unchanged, only display differs), confirmed all of wads-migrate's documented rough edges were actually addressed, and diffed the old vs. new CI workflow for dropped functionality (none beyond intentional, in-file-documented changes — Pages publish step restructuring and PyPI auth method, both called out in the new workflow's own MIGRATION NOTE comments). It flagged oplot/my.py's deeper brokenness (not blocking, dead code) — filed as #10.

Dependents check: oplot's one known local dependent, shaded, only imports oplot.plot_data_set.scatter_and_color_according_to_y (untouched by this change); its test suite runs clean (2 skipped — missing audio fixtures, unrelated — 0 failed) against this branch.

Test plan

• wads ci-local: 87 passed, format/lint green (3.10 + 3.12).
• Independent review: build-step failure in that pass was a local-disk-space artifact (/tmp at 100%), not a defect — uv build is standard and expected to succeed on a GitHub Actions runner.
• gh pr checks --watch green before merge.

Closes #8

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https://claude.ai/code/session_011HSBVhDjRU4apSLcRkavv9