Add sequenced_sample_gdna_mass_ng and sample extract metric columns to AbsQuantMixinV2 and pacbio notebook

[AmandaBirmingham]

No description provided.

[Copilot]

Pull request overview

This PR updates the PacBio AbsQuant v12 schema and notebook-based builder to include additional extract/input metric columns, and updates associated tests/fixtures to reflect the new output format.

Changes:

• Extend AbsQuantMixinV2 (PacBio absquant v12) to require sequenced_sample_gdna_mass_ng plus the three sample-extract metric columns (calc_mass_sample_aliquot_input_g, sample_volume_ul, sample_surface_area_cm2).
• Update the PacBio sample sheet builder notebook and its notebook tests to support selecting the active sample extract metric column.
• Update expected output SampleSheet CSVs and processing-doc fixtures to include the new columns.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
metapool/sample_sheet.py	Adds new required AbsQuant v12 columns via AbsQuantMixinV2.
metapool/mp_strings.py	Defines new column-key constants used across the codebase.
metapool/tests/test_sample_sheet.py	Updates v12 absquant test inputs/expected outputs for new columns.
metapool/tests/data/good_pacbio_absquantv12.csv	Updates v12 “good” fixture to include new columns.
notebooks/pacbio_sample_sheet_builder.ipynb	Adds support for sample_extract_metric and emits new columns in notebook output.
notebooks/tests/test_pacbio_sample_sheet_builder.py	Passes sample_extract_metric into notebook execution for absquant cases.
notebooks/test_output/SampleSheets/*.csv	Updates expected notebook outputs with new headers/columns.
notebooks/test_data/processing_docs/*.csv	Updates notebook input fixtures to supply the new metric fields.

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[antgonza]

Sent one question via Slack but the changes look good to me.