uploads-v0.35.0

Minor Changes

• 918faa2: Show a runnable example when a command is missing an argument. uploads put
  now answers error: put requires at least one file followed by
  uploads put ./shot.png --pr 123, so the fix is copy-pasteable instead of one
  --help away. Applies to put, attach, find, delete, meta, gallery, comment,
  screenshot, annotate, and config set, plus the unknown-subcommand errors. With
  --json the example comes back as an example field on the error payload.
• 918faa2: Stop hiding the reason a command failed (#545). A missing argument used to
  print the command's whole help block with no error line in it — uploads put,
  find, delete, meta, gallery, screenshot, annotate, and
  config set all did this. Each now prints one error: line naming what is
  missing, plus the uploads <cmd> --help hint, so trimmed output still carries
  the reason and --json gets a real error payload. An unknown config
  subcommand does the same instead of dumping the config help.
• 918faa2: Smooth out three metadata papercuts agents hit (#545). meta set and find
  now accept --meta k=v, the same spelling put, attach, screenshot, and
  list use, alongside the positional k=v form. An unknown command answers
  with a "did you mean" suggestion — uploads set-metadata points at
  uploads meta set — instead of a help dump that never mentioned meta. That
  output is also short now, so an agent that pipes through tail still sees the
  error; with --json it comes back as { error, code, didYouMean } on stdout.