chore: apply cargo fmt and fix clippy warnings

Fix pre-existing clippy lints:
- &PathBuf -> &Path in audit_cleanup.rs
- too_many_arguments on process_newly_available_git_data,
  process_purgatory_announcements, and HttpService::new
- clone_on_copy for PublicKey (Copy type) in purgatory cleanup loop

1 files changed, 0 insertions, 1 deletions

diff --git a/src/nostr/builder.rs b/src/nostr/builder.rs
index a0088e1..03132bf 100644
--- a/src/nostr/builder.rs
+++ b/src/nostr/builder.rs
@@ -18,7 +18,6 @@ use crate::nostr::policy::{
     ReferenceResult, RelatedEventPolicy, StatePolicy, StateResult,
 };
 
-
 /// Type alias for the shared database used by the relay
 pub type SharedDatabase = Arc<dyn NostrDatabase>;