style(server): fix all clippy warnings including derivable traits, redundant locals, collapsible blocks and needless borrows

server/src/handlers_v2/meta.rs

@@ -68,10 +68,9 @@ impl McpTool for QueryDecisionsHandler {
         let data = state.adrs.read_with(|adrs| {
             let filtered: Vec<_> = adrs.iter().filter(|a| {
                 if let Some(q) = &req.query {
-                    let q = q;
-                    contains_ignore_ascii_case(&a.title, &q)
-                        || contains_ignore_ascii_case(&a.context, &q)
-                        || contains_ignore_ascii_case(&a.decision, &q)
+                    contains_ignore_ascii_case(&a.title, q)
+                        || contains_ignore_ascii_case(&a.context, q)
+                        || contains_ignore_ascii_case(&a.decision, q)
                 } else {
                     true
                 }