chore: update dev seed data with loyalty stamps

Primary test user (user@example.com) now has 4 loyalty stamps in seed data for testing the redesigned stamp card.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local-dev-2.sh

@@ -298,8 +298,8 @@ if api_post "$BASE_URL/register" '{"firstName":"Liam","lastName":"Caldwell","ema
 
 # --- Promote admin and set deposit flags via DB ---
 docker exec postgres psql -U myuser -d mydb -c "UPDATE users SET account_role = 'admin' WHERE email = 'admin@example.com'"
-# Primary test user: verified role for card testing, zero deposit requirement
-docker exec postgres psql -U myuser -d mydb -c "UPDATE users SET account_role = 'verified_email', deposits_required = 0 WHERE email = 'user@example.com'"
+# Primary test user: verified role for card testing, zero deposit requirement, 4 loyalty stamps
+docker exec postgres psql -U myuser -d mydb -c "UPDATE users SET account_role = 'verified_email', deposits_required = 0, loyalty_stamps = 4 WHERE email = 'user@example.com'"
 # Loyal regulars: zero deposit requirement
 docker exec postgres psql -U myuser -d mydb -c "UPDATE users SET deposits_required = 0 WHERE email IN ('emma.johnson@example.com','sophie.williams@example.com','amelia.jones@example.com','isla.davies@example.com','lily.wilson@example.com','ava.walker@example.com','grace.fletcher@example.com')" > /dev/null 2>&1
 # Deposit-required users: 3 no-shows on record