feat: savings allocations

internal/db/migrations/00012_create_allocations_table.sql

@@ -0,0 +1,21 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE allocations (
+    id TEXT PRIMARY KEY NOT NULL,
+    account_id TEXT NOT NULL REFERENCES accounts(id) ON DELETE CASCADE,
+    name TEXT NOT NULL,
+    amount TEXT NOT NULL,
+    target_amount TEXT,
+    sort_order INTEGER NOT NULL DEFAULT 0,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE (account_id, name)
+);
+
+CREATE INDEX idx_allocations_account_id ON allocations (account_id, sort_order);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE allocations;
+-- +goose StatementEnd