feat: PRO-2395 sponsorship policy db migration

backend/src/migrations/003.sponsorship-policy.sql

@@ -0,0 +1,45 @@
+--------------------------------------------------------------------------------
+-- Up
+--------------------------------------------------------------------------------
+
+-- Create POLICIES Table
+CREATE TABLE IF NOT EXISTS policies (
+    POLICY_ID INTEGER PRIMARY KEY,
+    WALLET_ADDRESS TEXT NOT NULL,
+    NAME TEXT NOT NULL,
+    DESCRIPTION TEXT,
+    START_DATE DATE,
+    END_DATE DATE,
+    IS_PERPETUAL BOOLEAN DEFAULT FALSE,
+    IS_UNIVERSAL BOOLEAN DEFAULT FALSE,
+    CONTRACT_RESTRICTIONS TEXT, -- Stores JSON string because SQLite doesn't support JSON natively
+    FOREIGN KEY (WALLET_ADDRESS) REFERENCES api_keys(WALLET_ADDRESS)
+);
+
+-- Create POLICY_LIMITS Table
+CREATE TABLE IF NOT EXISTS policy_limits (
+    LIMIT_ID INTEGER PRIMARY KEY,
+    POLICY_ID INTEGER NOT NULL,
+    LIMIT_TYPE TEXT NOT NULL,
+    MAX_USD REAL, -- REAL used in SQLite for floating-point numbers
+    MAX_ETH REAL,
+    MAX_OPERATIONS INTEGER,
+    FOREIGN KEY (POLICY_ID) REFERENCES policies(POLICY_ID)
+);
+
+-- Create POLICY_CHAINS Table
+CREATE TABLE IF NOT EXISTS policy_chains (
+    POLICY_CHAIN_ID INTEGER PRIMARY KEY,
+    POLICY_ID INTEGER NOT NULL,
+    CHAIN_NAME TEXT NOT NULL,
+    FOREIGN KEY (POLICY_ID) REFERENCES policies(POLICY_ID)
+);
+
+
+--------------------------------------------------------------------------------
+-- Down
+--------------------------------------------------------------------------------
+
+DROP TABLE IF EXISTS policy_chains;
+DROP TABLE IF EXISTS policy_limits;
+DROP TABLE IF EXISTS policies;