Improve how shared folders appear in the navigation sidebar

Hide the "Shared with me" header in certain views and add tooltips to indicate folder owners.

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artifacts/tx-os/src/components/notes/folders-rail.tsx

@@ -537,9 +537,11 @@ export function FoldersRail({
           className="contents md:block md:pt-3"
           data-testid="shared-with-me-section"
         >
-          <div className="hidden md:block text-[11px] font-semibold uppercase tracking-wider text-muted-foreground px-2 mb-1 mt-3">
-            {t("notes.folders.sharedWithMe", "Shared with me")}
-          </div>
+          {mode === "rail" && (
+            <div className="hidden md:block text-[11px] font-semibold uppercase tracking-wider text-muted-foreground px-2 mb-1 mt-3">
+              {t("notes.folders.sharedWithMe", "Shared with me")}
+            </div>
+          )}
           {sharedFolders.map((sf: SharedFolder) => {
             const isSel =
               selected.kind === "shared-folder" && selected.id === sf.id;
@@ -567,6 +569,9 @@ export function FoldersRail({
                   onClick={() => onSelect({ kind: "shared-folder", id: sf.id })}
                   className="w-full flex items-center gap-2 px-2.5 py-1.5 text-sm text-start whitespace-nowrap"
                   data-testid={`shared-folder-select-${sf.id}`}
+                  title={t("notes.folders.sharedByName", "by {{name}}", {
+                    name: ownerName,
+                  })}
                 >
                   <span className="shrink-0">
                     <Share2 size={14} />