remove the /shared bind from agent containers

hive-priv/src/container_config.rs

@@ -539,7 +539,7 @@ mod tests {
     fn non_repo_mounts_are_left_alone() {
         let flags = git_overlay_flags(&[
             bind("/agents/atlas/state"),
-            bind("/shared"),
+            bind("/knowledge"),
             bind("/applied"),
             bind("/agents/atlas/config-notes"),
         ]);