[fosterwei]

Every compound that has a calculator page now carries the calculator on its own record, with a link to the full page and a card in Related records. The calculator page already linked back, so the pair is joined in both directions.

Where it sits

Directly under "dosage chart: studies versus what circulates" on all 19 qualifying records. A reader who has just seen which figures were studied and which merely circulate is one scroll from working out what a vial yields.

What doses did studies use?
BPC-157 dosage chart: studies versus what circulates
BPC-157 dosage calculator          <- new, H2, in the table of contents
What side effects have been reported?

The block renders only for a record that qualifies for a calculator page, by the same rule that decides whether that page exists. Fifteen compounds get neither.

One component, not two copies

Calculators.astro gains id, heading and headingLevel props so the same component sits inside a compound page under that page's H2 with its tool heading demoted to H3. No duplicate H2, no second copy of the markup, and the arithmetic keeps exactly one implementation and one test suite.

Tests

Now cover every compound that has a calculator page: the link, the section, the output element, and the embedded script computing the known case. 55 assertions, up from 36.

Injected fault	Caught
Link to the calculator page removed	yes
Calculator section cut out	yes
Script broken so it computes nothing	yes

Worth recording: my first attempt at the section-cut fault used a regex that never matched, so the test passed because the injection had failed, not because the test worked. Redone by index. A test that passes for the wrong reason looks identical to one that works.

Gates

Content validation (59 records), registry check, 36 drafter tests, 55 calculator tests, loop gate 47/47, all eight link rules including no duplicate H2.

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