Document Pearcord as the default UI theme.

Co-authored-by: Cursor <[email protected]>

BRANDING_THEME.md

@@ -1,6 +1,6 @@
 # Pearcord brand theme
 
-Optional UI theme **`pearcord`** (`html[data-theme="pearcord"]`) applies official brand colors from the [`pearcord-branding`](../modules/pearcord-branding) module. Default theme remains **`dark`**.
+UI theme **`pearcord`** (`html[data-theme="pearcord"]`) is the default and applies official brand colors from the [`pearcord-branding`](../modules/pearcord-branding) module. Other themes: **`dark`**, **`light`**, **`amoled`**.
 
 ## Palette
 

USER_SETTINGS.md

@@ -18,7 +18,7 @@ pearcord:userprefs:{userId}
 
 | Key | Values | Default |
 |-----|--------|---------|
-| `theme` | `dark`, `light`, `amoled` | `dark` |
+| `theme` | `dark`, `light`, `amoled`, `pearcord` | `pearcord` |
 | `density` | `cozy`, `compact` | `cozy` |
 | `showLinkPreviews` | boolean | `true` |
 | `showSecondsInTimestamps` | boolean | `false` |