[RussLaher]

What

• decisions.md: the ruling decision-xsources (Russ Laher, 2026-11-04).
• foundation.md: the rule, plus the products table, the difference stage's row and the binding sentence.

Under diff_flavor = "sfft" the difference job writes xsources beside its source set. These are dev's (d2657f7d) SExtractor sources of the SFFT difference image, positive and negative:

• Kept by dev's loader cuts: inside the image more than 2 px from its edge; dropped at a finite sumrat ≤ 0.4, a finite rb ≤ 0 or a finite aperture S/N ≤ 5. Uncapped.
• With dev's extra columns: the pixel columns, DAOStarFinder sharpness and roundness, a 5×5 PSF fit on the prefiltered sources, and the RuBR-AT score and label.
• Split into xsources_<yyyymmdd>_<sca> child tables, loaded by COPY, and official with the source set.

Choices recorded:

• a failure fails the job;
• the rb cut is xsources' alone (sources keeps the rb-port ruling);
• both signs are scored.

Why

Requested by Russ: xsources on rebuild, split and loaded as sources is.

Code

The rapid PR follows; link in a comment.

Testing

Run locally in a Python 3.12 container: sphinx-build -W builds clean, scripts/acceptance.sh passes, and scripts/check-public-safety.sh is clean. The external link check was not run.

🤖 Generated with Claude Code

[RussLaher]

Code: Caltech-IPAC/rapid#523

[RussLaher]

Added: the null-not-failure rule for uncomputable extra columns, and the decision-skip-sources ruling and rule ([difference] skip_loading_sources_records). Code in Caltech-IPAC/rapid#523.

[RussLaher]

Added the decision-children-reads ruling and the rule in foundation.md: the pipeline queries the child tables it needs, not the parents. Code in Caltech-IPAC/rapid#523.

[RussLaher]

Updated decision-children-reads and the foundation rule: the operator scripts and named queries read child tables too, through sources_of and xsources_of. Code in Caltech-IPAC/rapid#523.