v1.5.0

Added

• Badge rules and linked roles in the admin badge editor: an "Award
  automatically" picker (grouped by Listing, Voting, Ownership and Discord,
  with the number or role ID each rule needs) and a "Use for Discord
  linked roles" toggle that shows how many of Discord's 5 slots are used.
  The badge list shows each badge's rule and linked-role status, and a
  rule type the panel doesn't recognise is shown and kept rather than
  dropped.

• /linked-roles, where members connect their Discord account so servers
  can give them roles for their badges, its /linked-roles/callback
  page, and a Linked Roles knowledge base article covering both connecting
  and setting up a linked role in a server.

• A brand kit in public/brand (guide in public/brand/README.md): logo
  marks, the Geist wordmark and app icon as SVG and PNG; favicons and app
  icons; banners for X, GitHub, link previews, Discord, LinkedIn and
  YouTube with a backdrop of real bots from the list; 21 static and 7
  animated Discord emojis; 8 static and 5 animated stickers; and regular
  plus nine seasonal themes (Halloween, Autumn, Winter, Holiday, New Year,
  Valentine's, Spring, Pride, Summer), each with a static and animated
  server icon, an app icon, a logo emoji, a Discord banner and an X
  header.

• Sub-brands for the three Omniplex bots in public/brand/bots: Popplio
  (indigo, chat badge), Infernoplex (ember, flame badge) and Arcadia (teal,
  shield badge), each with a static and animated avatar, an app icon, a
  logo emoji, a name lockup, and Discord profile, README and social
  preview banners.