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/recon.rs

@@ -90,10 +90,11 @@ impl PentestTool for ReconTool {
 
                         // Look for technology indicators
                         if (k == "x-powered-by" || k == "server" || k == "x-generator")
-                            && !result.technologies.contains(&v) && !extra_technologies.contains(&v)
-                            {
-                                extra_technologies.push(v.clone());
-                            }
+                            && !result.technologies.contains(&v)
+                            && !extra_technologies.contains(&v)
+                        {
+                            extra_technologies.push(v.clone());
+                        }
                         extra_headers.insert(format!("{probe_url} -> {k}"), v);
                     }
                 }