-- porch/middleware/store.wo — store-backed middleware tables.
-- Two purpose-shaped @table classes for rate limiting and idempotency.
-- Iteration 1 of the porch track.

-- Rate limiter: fixed-window counter.
-- Key format: "ip:192.168.1.1" or "principal:alice"
-- Window = start of current window in time.ticks (µs monotonic)
@table(name: "rate_limit_counters", index: [key])
class RateLimitCounter {
  key:   Text @unique
  count: Int
  window: Int
}

-- Idempotency: stored response for replay.
-- Key format: "idem:keyheader" or "idem:keyheader:sha256(method|path|body)"
-- Response = JSON-encoded Resp {status, headers, body} (allowlist: status, body, content-type)
-- created_at = time.ticks when stored (µs monotonic) for lazy expiry
@table(name: "idempotency_keys", index: [key])
class IdempotencyKey {
  key:        Text @unique
  response:   Text
  created_at: Int
  digest:     Text
}