Move thread: and id: prefixing to server side.

This paves way for better news: support

server/src/graphql.rs

@@ -1,7 +1,6 @@
-
 use async_graphql::{
-    connection::{Connection},
-    Context, EmptySubscription, Enum, Error, FieldResult, Object, Schema, SimpleObject, Union,
+    connection::Connection, Context, EmptySubscription, Enum, Error, FieldResult, Object, Schema,
+    SimpleObject, Union,
 };
 use log::info;
 use notmuch::Notmuch;
@@ -273,7 +272,7 @@ impl Mutation {
         unread: bool,
     ) -> Result<bool, Error> {
         let nm = ctx.data_unchecked::<Notmuch>();
-        info!("set_read_status({unread})");
+        info!("set_read_status({query}, {unread})");
         if unread {
             nm.tag_add("unread", &format!("{query}"))?;
         } else {