V1.2.0: Markdown links, code blocks, and editor fixes

Added

• Favicons beside ordinary internal and external Markdown links in public content
  and admin previews, with a text-only fallback when an icon cannot load.
• PowerShell syntax highlighting, including the ps1 alias, in the shared editor
  language picker and public Markdown renderer.
• An independent word-wrap toggle on every public code block, including short
  blocks. Wrapping changes presentation without changing copied code.

Changed

• Public Markdown links reveal their underline on hover with a 300 ms transition.
  Project and collection mentions retain their existing badges and icons.
• Public code blocks use custom One Light and One Dark Pro syntax palettes with
  matching bold-token rules, transparent bodies and headers, and equally sized
  icon-only copy and wrap controls with hover and keyboard-focus tooltips.
• Update oRPC to 2.0.0-beta.49 and tsrs to 0.23.0-ts7.1.0-beta.

Fixed

• Keep BlockNote's block-style select inside its editor portal so selecting part
  of a paragraph and opening the toolbar menu does not dismiss it. Heading
  changes remain available through the pointer and keyboard.
• Generate a name-based avatar when an account has no image.

Upgrade notes

• Deploy the API and web from the same v1.2.0 tag. Changes since v1.1.0 add
  no database migrations or environment variables; existing Markdown needs no
  migration.
• External-link favicons use Google S2 with only the destination hostname and no
  referrer. If that service is unavailable, links remain usable without icons.

Full Changelog: v1.1.0...v1.2.0