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1/ @nicbarkeragain

Similar to string tags, if your program has deferred actions e.g. pushing commands into a queue, observer pattern / callbacks / lambdas etc, it will save you so much grief tagging them with FILE and LINE in debug to see in the debugger where they originally came from.

Branches: 2026-08-28-borrowck_novel-thats-the-kind-of-posts-we-want-to-see-yes-very, 2026-08-28-flaratt_ljos-im-convinced-you-should-never-use-observer, 2026-08-28-clawdesign-its-also-a-good-idea-to-add-these-to-your-mem