first commit

migrations/20250826132657_init.down.sql

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+DROP TABLE users;

migrations/20250826132657_init.up.sql

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+CREATE TABLE users (
+    _id TEXT PRIMARY KEY,
+    balance INTEGER NOT NULL DEFAULT 0,
+    items JSON NOT NULL DEFAULT '[]'
+);

migrations/20250827155307_cooldown.down.sql

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+DROP TABLE cooldowns;

migrations/20250827155307_cooldown.up.sql

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+CREATE TABLE cooldowns (
+    _id TEXT,
+    type TEXT NOT NULL PRIMARY KEY,
+    untill TIMESTAMPTZ NOT NULL
+);