-- Migration 090: Web Push subscriptions (v0.302 Lot N1)
-- Stores browser push subscription endpoints for Web Push API

CREATE TABLE IF NOT EXISTS push_subscriptions (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    endpoint TEXT NOT NULL,
    p256dh TEXT NOT NULL,
    auth TEXT NOT NULL,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    UNIQUE(user_id, endpoint)
);

CREATE INDEX IF NOT EXISTS idx_push_subscriptions_user_id ON push_subscriptions(user_id);