agent build

migrations/000010_definition_versions.down.sql

@@ -0,0 +1,18 @@
+-- Reverses 000010.
+--
+-- Drops the version history, its trigger and the trigger's function.
+--
+-- Rolling this back DISCARDS EVERY PUBLISHED VERSION. The current definition of
+-- each agent survives — that lives in agent_definitions and is untouched — but
+-- the record of what earlier versions said is gone, and every `agent_version`
+-- recorded on a past run becomes unresolvable again. Trajectories keep their
+-- number; there is simply nothing left to look it up in.
+--
+-- The trigger has to go before the table, and the function after it, because
+-- the trigger depends on the function and the table depends on the trigger.
+
+SET search_path = public;
+
+DROP TRIGGER IF EXISTS definition_versions_no_update ON public.definition_versions;
+DROP TABLE IF EXISTS public.definition_versions;
+DROP FUNCTION IF EXISTS public.definition_versions_immutable();