[RunpengLuo]

Summary

• Adds a second palette for (a, b) copy-number states, "cnamaste", taken from cnamaste.palette.COPY_STATES: hue by minor-allele fraction, darker for more copies. The existing palette is now named "hatchet" and remains the default, so current calls and output are unchanged.
• cn_palette= is accepted by get_cn_cmap, get_mixcn_cmap and plot_cnv_profile (which passes it to its key). plot_scatter_1d_multisample and plot_heatmap_cnp forward it through their profile kwargs.
• CN_PALETTES = ("hatchet", "cnamaste") is exported for use as argparse choices. An unknown name raises ValueError.
• States a palette does not list take the default color. The key's overflow box is labelled from the palette: >7 under "hatchet", >6 under "cnamaste".
• examples/plot_gallery.py takes --cn_palette {hatchet,cnamaste} and --outdir.
• Version 0.1.1b3.

Usage

Pass the same palette to the scatter colors and the profile so points, profile and key agree:

palette = get_mixcn_cmap(cnps, cn_palette="cnamaste")
plot_cnv_profile(ax, seg_df, genome_axis, ax_leg=ax_leg, cn_palette="cnamaste")

Not included

cnamaste's FLIP_OPACITY (B > A drawn at half opacity) and TRACK_NORMAL ((1, 1) shown as steelblue on scatter tracks) are not ported. (a, b) and (b, a) still share one color, and mixed phase is still marked by the "/" hatch.

Test plan

• ruff format --check and ruff check are clean
• pytest: new tests cover the default palette, the cnamaste colors and coverage, the unknown-name error, get_mixcn_cmap under cnamaste, and the profile and key under cnamaste
• Gallery rendered with the default palette is pixel-identical to the committed examples/*.png