init push

migrations/goose/20260610_contact_username_non_unique.sql

@@ -0,0 +1,15 @@
+-- +goose Up
+-- Username uniqueness is now enforced in the backend for contact flows,
+-- so keep a regular index for lookups instead of a unique constraint.
+
+DROP INDEX IF EXISTS idx_users_username ON users;
+
+CREATE INDEX idx_users_username
+  ON users (username);
+
+-- +goose Down
+DROP INDEX IF EXISTS idx_users_username ON users;
+
+CREATE UNIQUE INDEX idx_users_username
+  ON users (username);
+iya