A principal engineer prompt engine and architectural boilerplate suite. Enforces strict PostgreSQL 16 DDL syntax, multi-tenant Row-Level Security, idempotent webhook handlers, Clean Architecture / DDD, and production Docker Compose clusters.
Zero pseudocode. Complete, copy-pasteable PostgreSQL DDL with foreign key cascades and triggers.
-- Automated Updated-At Trigger Function & Tenant Isolation
CREATE TABLE IF NOT EXISTS tenants (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
slug VARCHAR(64) UNIQUE NOT NULL,
name VARCHAR(255) NOT NULL,
created_at TIMESTAMPTZ DEFAULT clock_timestamp() NOT NULL
);
-- Idempotent Webhook Receipts (Prevents Double-Charging)
CREATE TABLE IF NOT EXISTS webhook_receipts (
id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
provider VARCHAR(64) NOT NULL,
event_id VARCHAR(128) NOT NULL,
payload JSONB NOT NULL,
processed_at TIMESTAMPTZ DEFAULT clock_timestamp() NOT NULL,
CONSTRAINT uq_provider_event UNIQUE (provider, event_id)
);
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