chore: establish local platform baseline

migrations/000029_minimum_firmware_policy.up.sql

@@ -0,0 +1,9 @@
+BEGIN;
+
+ALTER TABLE device
+    ADD COLUMN minimum_firmware_version varchar(80);
+
+COMMENT ON COLUMN device.minimum_firmware_version IS
+    'Minimum device firmware accepted for new calls; SemVer is ordered, opaque vendor versions require an exact match.';
+
+COMMIT;