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Dario LipicarandClaude Opus 4.8
a644be2669
serializeResultForTesting used QJsonValue::fromVariant, which cannot
convert the custom LogosResult metatype and silently degraded a
`result`-type return to the literal "null". A QML-only ui_qml plugin
calling a result-returning method through logos.callModule therefore
received null instead of {success, value, error}.
Replace the bespoke serialization with logos-protocol's canonical
logos::qvariantToNlohmann — the same converter every transport
(lp/std/cdylib) already uses. Now ALL types round-trip to QML/JS
identically: scalars as bare literals, containers preserved, integers
kept as integers (QJsonValue::fromVariant degraded them to double),
bytes in the tagged {"_bytes":...} form, and LogosResult as
{success, value, error} (empty error -> null). Fixes both sync
callModule and async callModuleAsync.
Adds test_logos_qml_bridge_result.cpp (regression) plus the
reproduction/isolation harnesses (e2e, gui, handshake, 2-process) built
while proving the long-suspected QML "sequential-call stall" is NOT an
SDK defect: every layer round-trips correctly under isolation, and the
only real bug was this result serialization.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>