fix: resolve oxlint warnings — suppress false positives, remove unused imports (#22687)

packages/opencode/src/lsp/server.ts

@@ -826,7 +826,7 @@ export namespace LSPServer {
           if (cargoTomlContent.includes("[workspace]")) {
             return currentDir
           }
-        } catch (err) {
+        } catch {
           // File doesn't exist or can't be read, continue searching up
         }