Merge remote-tracking branch 'origin/master'

svc/db/migrations/2026-06-18_zbggcampaign_timestamps.sql

@@ -0,0 +1,29 @@
+-- Add timestamps to zbggcampaign so UI can show "last change" times.
+-- This table is append-only (history is preserved by inserting new rows),
+-- so zlins_dttm is the time the assignment row was created.
+
+ALTER TABLE zbggcampaign
+  ADD COLUMN IF NOT EXISTS zlins_dttm TIMESTAMPTZ;
+
+ALTER TABLE zbggcampaign
+  ADD COLUMN IF NOT EXISTS zlupd_dttm TIMESTAMPTZ;
+
+-- Backfill existing rows (no historical source available). This prevents NULLs
+-- and makes the API stable after deploying code that selects these columns.
+UPDATE zbggcampaign
+SET
+  zlins_dttm = COALESCE(zlins_dttm, now()),
+  zlupd_dttm = COALESCE(zlupd_dttm, zlins_dttm, now());
+
+ALTER TABLE zbggcampaign
+  ALTER COLUMN zlins_dttm SET DEFAULT now();
+
+ALTER TABLE zbggcampaign
+  ALTER COLUMN zlupd_dttm SET DEFAULT now();
+
+ALTER TABLE zbggcampaign
+  ALTER COLUMN zlins_dttm SET NOT NULL;
+
+ALTER TABLE zbggcampaign
+  ALTER COLUMN zlupd_dttm SET NOT NULL;
+