fix: resolve all fmt and clippy warnings

Main lib (src/):
- Add #[allow(dead_code)] for build_info field (stored to prevent Prometheus unregistration)
- Add #[allow(dead_code)] for first_seen field (reserved for future rate limiting)
- Replace .or_insert_with(RelaySyncNeeds::default) with .or_default()
- Replace manual div_ceil implementations with .div_ceil(100)

Test code (tests/):
- Replace .expect(&format!(...)) with .unwrap_or_else(|_| panic!(...))
- Remove needless borrows in fetch_metrics() calls
- Add #[allow(dead_code)] and #[allow(unused_imports)] to test helpers module

grasp-audit:
- Apply cargo fmt to fix formatting

1 files changed, 18 insertions, 14 deletions

diff --git a/grasp-audit/src/specs/grasp01/nip01_smoke.rs b/grasp-audit/src/specs/grasp01/nip01_smoke.rs
index 8a0a4d1..4dbcd3d 100644
--- a/grasp-audit/src/specs/grasp01/nip01_smoke.rs
+++ b/grasp-audit/src/specs/grasp01/nip01_smoke.rs
@@ -163,23 +163,27 @@ impl Nip01SmokeTests {
     /// Spec: NIP-01 CLOSE message
     /// Requirement: Relay MUST support CLOSE to end subscriptions
     pub async fn test_close_subscription(client: &AuditClient) -> TestResult {
-        TestResult::new("close_subscription", "GRASP-01:nostr-relay:7", "Can close subscriptions")
-            .run(|| async {
-                // For now, we just verify we can query events
-                // Full subscription management with CLOSE would require
-                // lower-level WebSocket access
+        TestResult::new(
+            "close_subscription",
+            "GRASP-01:nostr-relay:7",
+            "Can close subscriptions",
+        )
+        .run(|| async {
+            // For now, we just verify we can query events
+            // Full subscription management with CLOSE would require
+            // lower-level WebSocket access
 
-                let filter = Filter::new().kind(Kind::TextNote).limit(1);
+            let filter = Filter::new().kind(Kind::TextNote).limit(1);
 
-                let _events = client
-                    .subscribe(vec![filter], Some(std::time::Duration::from_secs(2)))
-                    .await
-                    .map_err(|e| format!("Failed to subscribe: {}", e))?;
+            let _events = client
+                .subscribe(vec![filter], Some(std::time::Duration::from_secs(2)))
+                .await
+                .map_err(|e| format!("Failed to subscribe: {}", e))?;
 
-                // If we got here, subscription worked
-                Ok(())
-            })
-            .await
+            // If we got here, subscription worked
+            Ok(())
+        })
+        .await
     }
 
     /// Test 5: Rejects events with invalid signatures