Three separate reasons these suites could never catch a regression, all
fixed here. None of them are about the app; all of them are about the tests
being unable to report the truth.
1. A skipped test reported as a pass. Thirteen guards were bare returns —
`if (!relayReachable()) return` — so with no relay the method returned
immediately and the runner recorded PASSED. Now `assumeTrue`, which
reports SKIPPED, and the run says "(2 skipped)" where it used to say
nothing at all. Only the guards that abandon a whole test were changed;
helper loop exits like `if (found) return` are control flow and were
left alone.
2. The relay was hardcoded to relay1.flamenet.io — production. Every run
that did work created real accounts there. Now `-e relay <host>`, still
defaulting to production so an unqualified run is unchanged.
3. Android blocks cleartext HTTP, so a debug build could not reach a relay
on the developer's machine even when one was running. A debug-only
network security config permits cleartext to 10.0.2.2, 127.0.0.1 and
localhost, and nothing else. src/debug, so no release APK is affected.
Together these took the sign-up suite from "2 skipped, reported green" to
"2 run, 2 failed" — which is worth more, because it is true. What it
fails on now (no compose hierarchy at launch) is the next thing to fix.
./gradlew :app:connectedDebugAndroidTest \
-Pandroid.testInstrumentationRunnerArguments.relay=10.0.2.2:18810
