fix: bake-answer messages stop asserting causes the classifier can't see

Rewords Cleared/Unanswered/ForeignRequest to name only observed facts and every live hypothesis instead of picking a winner; adds a guarded answeredOutcome accessor against a future unhandled BakeAnswerKind; folds an unreachable BakeScanKey/Context test state; fixes generation-stamp timing.

src/shell/capture/bake_land.cpp

@@ -265,7 +265,10 @@ void RunResampleBake(ReaSamplerSession& session) {
     // land is told why rather than silently ignored.
     const void* loaded = session.loadedProject();
     const void* active = EnumProjects(-1, nullptr, 0);
-    const wire::BakeScanContext scanContext{loaded != nullptr, loaded == active};
+    // `loaded == active` alone is enough: every OpenProject::proj enumerated below is a
+    // real, non-null tab, so an unloaded `loaded` (nullptr) can never equal one and
+    // matchesLoadedProject (below) falls out false regardless of this flag's value.
+    const wire::BakeScanContext scanContext{loaded == active};
     const std::int64_t nowSec = static_cast<std::int64_t>(std::time(nullptr));
 
     std::vector<Answer> answers;