Add checked query composition foundations for prepared presentations

Move React navigation query generation behind an explicit build frontend. Add checked result-dependent query bindings and pure composition evaluation, including one-snapshot server execution. Preserve the existing rendering path while the React manifest, worker preparation, and replica admission integration remain pending; see docs/PREPARED_PRESENTATIONS_PROGRESS.md.

src/capability-model/types.ts

@@ -330,6 +330,7 @@ export interface PackageRevision {
   controllers?: PackageController[];
   queries?: import("../query/types.js").QueryDeclaration[];
   checkedQueries?: import("../query/types.js").CheckedQuery[];
+  queryCompositions?: import("../query/composition.js").CheckedQueryComposition[];
   queryTemplates?: import("../query/types.js").QueryTemplate[];
   genericExports?: import("./generic-packages.js").GenericPackageExport[];
   argumentRequirements?: { target: ObjectExpectation; required: InterfaceRevisionId }[];