Greptile Summary

This PR removes the env-var save/delete/restore boilerplate from session-message-events.test.ts that was previously forcing a full gateway startup by deleting OPENCLAW_TEST_MINIMAL_GATEWAY before each suite run. Now the suite inherits the default minimal harness (set by applyGatewaySkipEnv() via installGatewayTestHooks), which is sufficient for all tests in the file since they only exercise WebSocket subscription filtering and session transcript event routing — none of which require the full gateway subsystems (channels, providers, cron, canvas, etc.).

Confidence Score: 5/5

Safe to merge — the removed code was an explicit override to disable minimal mode; dropping it correctly re-enables the default minimal harness that all tests here actually need.

No logic errors or regressions. The deleted lines were only save/restore env-var boilerplate that forced a heavier startup, and the remaining tests are fully self-consistent under the minimal gateway.

No files require special attention.

_{Reviews (1): Last reviewed commit: "test(gateway): keep session event suite ..." | Re-trigger Greptile}