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

specs/script.allium

@@ -110,6 +110,12 @@ surface ScriptRuntimeSurface {
         -- Progress reporting is cooperative and flows through the supplied
         -- progress sink rather than ambient global side effects.
 
+    @guarantee ScriptOutputRouting
+        -- print(…) calls and the explicit bds.app.log(…) API append lines to a
+        -- host-routed script output stream: the desktop app's Output panel,
+        -- stdout in the CLI, and the host logger when no sink is attached —
+        -- never the ambient console.
+
     @guarantee BatchCancellation
         -- Managed utility and transform jobs can be cancelled by the host
         -- operator boundary.