Lock private profile sync state

crates/ely_browser_core/src/error.rs

@@ -36,6 +36,9 @@ pub enum CoreError {
     #[error("profile not found: {id}")]
     ProfileNotFound { id: ProfileId },
 
+    #[error("private profile keeps sync paused: {id}")]
+    PrivateProfileSyncLocked { id: ProfileId },
+
     #[error("download not found: {id}")]
     DownloadNotFound { id: DownloadId },
 

crates/ely_browser_core/src/state/profiles.rs

@@ -100,6 +100,9 @@ impl BrowserCore {
             .iter_mut()
             .find(|profile| profile.id() == profile_id)
             .ok_or_else(|| CoreError::ProfileNotFound { id: profile_id.clone() })?;
+        if sync_policy == ProfileSyncPolicy::Enabled && !profile.allows_sync() {
+            return Err(CoreError::PrivateProfileSyncLocked { id: profile_id.clone() });
+        }
 
         profile.set_sync_policy(sync_policy);
         Ok(())