[EtaCassiopeia]

Closes #337

Why

Imposter.recorded(RequestMatch) and Space.recorded(RequestMatch) filtered the journal with PredicateEvaluator, a JVM copy of Mountebank's predicate rules. On rift 0.24.0 it disagrees with the engine on:

• repeated query keys and headers (rift#1553);
• JSON-body objects and arrays, null, number spelling and missing fields (rift#1579);
• inject predicates, which it threw on.

This is the third time it has drifted (#330, #335). The triage comment on #337 explains the decision.

What

• recorded(match) makes one POST /imposters/:port/verify call with includeRequests (embedded: rift_verify) and returns the engine's matches in journal order. A space adds its flowId. A non-recording imposter still gets an empty list.
• A verify reply missing the requested requests array is a CommunicationError rather than a silent empty list (RecordedRequests.readMatched).
• PredicateEvaluator is no longer called. It is @Deprecated(since = "0.3.8", forRemoval = true). rift-scala excludes it in FacadeCoverage.
• Docs: the recorded(match) javadoc on Imposter/Space and docs/design/sdk-api.md (§§ verify, match grammar table).

Tests

• New RecordedMatchOnEngineTest (4 tests):
  • the literal verify body for an imposter and for a space;
  • no journal fetch;
  • engine order is kept;
  • an empty result;
  • a reply missing requests is an error.
• VerifyIntegrationTest: two tests that pinned the client-side filter now assert the engine call. The obsolete client-filter case was removed from SpaceRecordedTest.
• New RecordedMatchArraysIT (live, all lanes), checking seven rules from 0.24:
  • query array subset;
  • query deepEquals multiset;
  • scalar matches any value of a repeated key;
  • body array subset;
  • 1.0 matches 1;
  • a missing body field reads "";
  • array expectation over a repeated header.
• Local runs: full verify on engine v0.24.0 (macOS arm64, JDK 21) passed on SPAWN and EMBEDDED, XPathRecordedMatchIT included.

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