gittop 2026.08.3

Two bugs that both had the same shape: gittop drew something that looked fine and was not.

Fixed

• A branch whose upstream was deleted on the remote was drawn as though it had never been pushed.
  It still has an upstream in its config, so "no upstream" invited a git push -u that would
  recreate a branch somebody closed on purpose. It now reads gone, names the upstream that went
  away, and prints no ahead/behind — counts against a ref that no longer describes anything are not
  facts about the remote. The branch card on the status view had the same gap and gets the same
  treatment.
• The nerd glyph set drew blanks. Twenty-nine of its thirty-one icons were empty strings: the
  comments naming them were all still there, the characters were not, and they had been missing
  since the set was introduced. Nothing selects nerd automatically, which is why three releases
  shipped it that way. The icons are now written as \uXXXX escapes, so a lost one is visible in a
  diff rather than silent.

Added

• x on the Branches view prunes the remote-tracking refs whose branches are gone from the server,
  behind a confirm, and reports which ones went. This is the only thing that can find a stale ref:
  while it still resolves, nothing local can tell it from a healthy one — git branch -vv cannot
  either. An ordinary fetch still honours the repository's own remote.<name>.prune and is never
  made to prune on gittop's initiative.

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