Add ASIMOV 0.7 compatibility and PESummary assets

[oshaughnessy-junior]

What changed

• keep legacy automatic PESummary when ASIMOV still provides PESummaryPipeline;
• defer to a separate postprocessing analysis on ASIMOV 0.7+;
• publish the versioned rift-assets/v1 sample/config/PSD/calibration contract;
• bridge the ASIMOV 0.5 get_psds() and ASIMOV 0.7 PSD attribute APIs;
• preserve and extend safe combined-metafile bootstrap handling;
• prefer canonical likelihood.minimum frequency while retaining the old ledger fallback.

Why

ASIMOV 0.7 removes the in-core PESummary class, which previously prevented the
RIFT entry point from importing. Separate PESummary jobs also need a complete,
stable set of RIFT assets.

Validation

On Caltech with Python 3.11:

• ASIMOV 0.5.8: 22 focused compatibility/bootstrap tests passed;
• ASIMOV 0.7.0: 22 focused compatibility/bootstrap tests passed;
• ASIMOV 0.7.0 no-submit DAG-build probe passed and selected the RIFT plugin.

No scheduler or science DAG was submitted.

[oshaughnessy-junior]

Critical audit follow-up is now at 3b79d2a. Fixed repository-relative PSD/calibration resolution, stopped advertising rift-assets/v1 for incomplete payloads, guarded dependency asset collection, and made stale bootstrap-grid reuse fail closed unless explicitly opted in. Added regression coverage for relative assets, dual standard/calmarg plus all.net publication, incomplete contracts, and bootstrap reuse. Caltech PR-checkout suite: 10/10. Adapter stable suite in the O4c environment: 18/18.