fix(clippy): resolve unused imports and deprecated TempDir method

Author: intelliDean

bin/flashstat-watchtower-test/tests/watchtower_integration.rs

@@ -23,8 +23,9 @@ struct Fixture {
 impl Fixture {
     async fn new() -> Self {
         let dir = tempdir().unwrap();
-        let storage: Arc<dyn FlashStorage> =
-            Arc::new(RedbStorage::new(dir.path().to_owned().join("test.db").to_str().unwrap()).unwrap());
+        let storage: Arc<dyn FlashStorage> = Arc::new(
+            RedbStorage::new(dir.path().to_owned().join("test.db").to_str().unwrap()).unwrap()
+        );
 
         let config = Config {
             rpc: RpcConfig {

bin/flashstat/src/main.rs

@@ -10,7 +10,7 @@ fn init_logging() {
 
 fn load_configuration() -> Result<Config> {
     let config = Config::load().context(
-        "Failed to load configuration. Ensure flashstat.toml exists or env vars are set.",
+        "Failed to load configuration. Ensure flashstat.toml exists or env vars are set!",
     )?;
     info!("🏮 Config loaded: WS={}", config.rpc.ws_url);
     Ok(config)

crates/flashstat-core/src/monitor.rs

@@ -607,7 +607,7 @@ fn build_conflict_analysis(
 mod tests {
     use super::*;
     use chrono::Utc;
-    use ethers::types::{Address, Block, Bytes, Transaction, H256, U256};
+    use ethers::types::{Address, Block, Bytes, H256, Transaction, U256};
     use flashstat_common::{BlockStatus, FlashBlock, ReorgSeverity, SequencerStats};
 
     // ── Fixtures ──────────────────────────────────────────────────────────────