Pass orientation override to vessel segmentation via zarrnii_kwargs

[Copilot]

The run_vesselfm rule was calling ZarrNii.from_ome_zarr without the orientation override that all other rules in the workflow pass via zarrnii_kwargs, causing vessel segmentation to ignore the configured coordinate orientation.

Changes

• vessels.smk: Added params: zarrnii_kwargs={"orientation": config["orientation"]} to run_vesselfm, matching the pattern used across segmentation.smk, patches.smk, and import.smk
• vesselfm.py: Unpacked **snakemake.params.zarrnii_kwargs in the ZarrNii.from_ome_zarr call

# Before
znimg = ZarrNii.from_ome_zarr(
    snakemake.input.spim,
    level=int(snakemake.wildcards.level),
    channel_labels=[snakemake.wildcards.stain],
)

# After
znimg = ZarrNii.from_ome_zarr(
    snakemake.input.spim,
    level=int(snakemake.wildcards.level),
    channel_labels=[snakemake.wildcards.stain],
    **snakemake.params.zarrnii_kwargs,
)

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