add wee spacing for nav back

Dependencies

• [2] I2AG42PA new cols layout
• [3] 7SSBM4UQ view: refactor repo view
• [*] 23SFYK4Q big view refactor into a new crate

Change contents

• replacement in inflorescence_view/src/app.rs at line 304
  [2.2352]→[2.2352:2380](∅→∅)
  − .height(Length::Fill));
  [2.2352]

  [2.2380]
  + .height(Length::Fill)

  + .spacing(SPACING));