fix: issue #20 cmd-J panel tab strip visibility and output panel parity

specs/layout.allium

@@ -249,6 +249,8 @@ invariant PanelTabFallback {
 -- Tasks tab: last 10 tasks, newest first, with progress/cancel.
 --   Tasks with shared group_id are collapsible groups showing aggregate progress.
 -- Output tab: log entries with copy-all button.
+--   The panel opens on Output automatically when a blogmark transform fails
+--   or a transform script writes output.
 -- Post Links tab: backlinks (posts linking here) + outlinks (posts linked from here).
 --   Each entry clickable, opens linked post as pinned tab.
 -- Git Log tab: file-level git history for active post/media (up to 50 entries).