refactor: simplify Android hidden-content hints - #427
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Summary
Refactor Android interactive snapshot hidden-content hinting so
snapshot -iderives hints from full-tree geometry and attaches them directly to the interactive output.Remove the source-tree mutation/rebuild transfer path, keep native dumpsys hints as the preferred signal, and expose shared hidden-content hint derivation for presentation semantics.
Follow-up review pass collapsed the Android snapshot local annotate/derive split, documented the source-node identity invariant, and strengthened the regression test to prove hints survive when intermediate full-tree nodes are pruned from interactive output.
Touched-file count: 5. Scope stayed within Android snapshot hinting and shared snapshot presentation utilities/tests.
Validation
pnpm formatpnpm exec vitest run src/platforms/android/__tests__/snapshot.test.ts src/platforms/android/__tests__/scroll-hints.test.ts src/utils/__tests__/mobile-snapshot-semantics.test.tspnpm typecheckpnpm check:toolingpnpm check:unitgit diff --checkKnown gaps: no Android integration replay was run because this is an internal Android snapshot pipeline refactor and the full non-integration validation bundles passed.