uploads-v0.29.0

Minor Changes

• c27f85c: Add uploads hook pre-pr-screenshot for the shared pre-PR screenshot reminder. Claude and Codex plugins run it; uploads install hooks wires Grok and Cursor.

Patch Changes

• 817429d: Short uploads --help now lists every command the catalog marks essential.
  Membership had two sources of truth — the essential flag in the command
  catalog and a separate hardcoded array in the help renderer — and they had
  drifted, so screenshot was flagged essential but never appeared. The catalog
  is now the only source of truth; the array orders the list and nothing more,
  and a mismatch in either direction fails loudly instead of silently hiding a
  command.