Adds diagnostics-only instrumentation to attribute the Activation E2E
positive flow's "SSE reply never renders" failure (issue #90 mode B)
between (a) expo/fetch not streaming the SSE response on the Android
release APK, vs (b) a mock-side broadcast bug. Does not change app
behavior or fix the root cause — #90 stays open pending the next CI
run's enriched logs.
- tests/fixtures/mock-opencode-server.ts: per-request logging
(method/path/status), per-SSE-connection connect/disconnect logging
with live client count, per-broadcast event-type + client-count
logging, and a 2s SSE heartbeat comment so client-side silence
becomes unambiguous.
- src/lib/sdk.ts global.events(): logs on the first successful
reader.read() that returns data, and when the stream loop ends —
proves/disproves whether expo/fetch ever delivers a byte.
- scripts/run-e2e-flows.sh: the emulator->mock reachability probe used
toybox wget/nc, which don't work reliably on the API-28 image.
Replaced with a probe chain (curl, wget, mksh /dev/tcp, nc, then a
host-side fallback) that writes a clear PASS/FAIL/UNKNOWN verdict to
artifacts/diag/probe.txt without blocking the flow.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
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