Implement structured Android entry viewer (#99)

README.md

@@ -79,6 +79,8 @@ The native Android architecture, support policy and complete mobile parity/issue
 map are recorded in [`docs/android/architecture.md`](docs/android/architecture.md)
 and [`docs/android/parity.md`](docs/android/parity.md). Android implementation
 belongs to milestone 06; the decision record does not claim a shipped client.
+The structured Android viewer and its validation are documented in
+[`docs/android/entry-viewer.md`](docs/android/entry-viewer.md).
 
 ## Project layout