GH-253 Add configurable placeholder settings and new placeholders#253

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P1otrulla wants to merge 9 commits intomasterfrom

add-more-placeholders

Commits on Aug 22, 2025

follow Rollczi's suggestion -> refactored placeholder registry
P1otrulla
committed
empty string -> null (papi, when receiving null in the code, marks it and sends an empty string)
P1otrulla
committed