revert: non-custodial — client supplies addresses+paths to POST /wallets/create

cryptowallet-schema.sql

@@ -1,4 +1,4 @@
--- CryptoWallet API — DB schema (idempotent, custodial v3.0)
+-- CryptoWallet API — DB schema (idempotent, non-custodial v4.0)
 
 CREATE TABLE IF NOT EXISTS users (
     id                  VARCHAR(26)   PRIMARY KEY,
@@ -17,34 +17,13 @@ CREATE TABLE IF NOT EXISTS users (
     kyc_verified        BOOLEAN       NOT NULL DEFAULT FALSE,
     kyc_verified_at     TIMESTAMPTZ,
     is_deleted          BOOLEAN       NOT NULL DEFAULT FALSE,
-    encrypted_vault     TEXT,
-    vault_salt          VARCHAR(128),
-    encrypted_mnemonic  TEXT,
+    encrypted_vault     TEXT,                              -- legacy, unused
+    vault_salt          VARCHAR(128),                      -- legacy, unused
+    encrypted_mnemonic  TEXT,                              -- legacy, unused
     created_at          TIMESTAMPTZ   NOT NULL DEFAULT NOW(),
     updated_at          TIMESTAMPTZ   NOT NULL DEFAULT NOW()
 );
 
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1 FROM information_schema.columns
-        WHERE table_name = 'users' AND column_name = 'encrypted_mnemonic'
-    ) THEN
-        ALTER TABLE users ADD COLUMN encrypted_mnemonic TEXT;
-    END IF;
-END $$;
-
-DO $$
-BEGIN
-    IF NOT EXISTS (
-        SELECT 1 FROM pg_constraint WHERE conname = 'users_encrypted_mnemonic_size'
-    ) THEN
-        ALTER TABLE users
-            ADD CONSTRAINT users_encrypted_mnemonic_size
-            CHECK (encrypted_mnemonic IS NULL OR (char_length(encrypted_mnemonic) BETWEEN 140 AND 512));
-    END IF;
-END $$;
-
 CREATE TABLE IF NOT EXISTS wallets (
     id                  VARCHAR(26)   PRIMARY KEY,
     user_id             VARCHAR(26)   NOT NULL REFERENCES users(id) ON DELETE CASCADE,