fix: resolve all clippy warnings with RUSTFLAGS="-D warnings"

Fix dead code warnings, redundant clones, boolean simplification,
format-in-format-args, type complexity, and Box::new of Default
across compliance-dast, compliance-agent, and compliance-dashboard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

compliance-dast/src/tools/auth_bypass.rs

@@ -9,14 +9,14 @@ use crate::agents::auth_bypass::AuthBypassAgent;
 
 /// PentestTool wrapper around the existing AuthBypassAgent.
 pub struct AuthBypassTool {
-    http: reqwest::Client,
+    _http: reqwest::Client,
     agent: AuthBypassAgent,
 }
 
 impl AuthBypassTool {
     pub fn new(http: reqwest::Client) -> Self {
         let agent = AuthBypassAgent::new(http.clone());
-        Self { http, agent }
+        Self { _http: http, agent }
     }
 
     fn parse_endpoints(input: &serde_json::Value) -> Vec<DiscoveredEndpoint> {