perf(neglible): completely veto Arc from AppState

Cargo.toml

@@ -43,6 +43,8 @@ multiple_crate_versions = { level = "allow" } # otherwise there's too much
 
 correctness = { level = "deny", priority = -1 }
 nursery = { level = "deny", priority = -1 }
+option_if_let_else = { level = "allow" } # I personally sometimes prefer what this prevents
+
 pedantic = { level = "deny", priority = -1 }
 perf = { level = "deny", priority = -1 }
 style = { level = "deny", priority = -1 }