test: add test_state_event_syncs_from_remote integration test

Implements Phase 3 of the purgatory sync integration test plan.

Key changes:
- Add immediate sync triggering for sync-received events that go to
  purgatory (instead of default 3-minute delay for user-submitted events)
- TestRelay now respects RUST_LOG environment variable for debugging
- New test verifies end-to-end flow: state event syncs from source relay,
  enters purgatory, git data is fetched from source's clone URL, and
  event is released and served

1 files changed, 3 insertions, 4 deletions

diff --git a/tests/common/relay.rs b/tests/common/relay.rs
index 55cc18e..8d20da6 100644
--- a/tests/common/relay.rs
+++ b/tests/common/relay.rs
@@ -144,10 +144,9 @@ impl TestRelay {
             .env("NGIT_SYNC_STARTUP_JITTER_MS", "0") // No jitter for tests
             .env("NGIT_SYNC_DISCONNECT_CHECK_INTERVAL_SECS", "1") // Fast reconnect attempts for tests
             .env("NGIT_SYNC_BASE_BACKOFF_SECS", "1") // Fast backoff for tests (1s instead of 5s default)
-            .env("RUST_LOG", "info") // Enable INFO logging for diagnostics
-            .stdout(Stdio::null()) // Disable stderr for cleaner test output
-            // .stdout(Stdio::inherit()) // Show stdout for diagnostics
-            .stderr(Stdio::null()); // Disable stderr for cleaner test output
+            .env("RUST_LOG", std::env::var("RUST_LOG").unwrap_or_else(|_| "info".to_string())) // Use RUST_LOG from environment or default to info
+            .stdout(Stdio::null()) // Suppress stdout for cleaner test output
+            .stderr(Stdio::null()); // Suppress stderr for cleaner test output
 
         // Add bootstrap relay URL if provided
         if let Some(ref bootstrap_url) = bootstrap_relay_url {