fix: Correct OAuth localhost/127.0.0.1 config and fix grapheme counting for Bluesky posts

- Fixed OAuth client configuration to properly use localhost for client_id and 127.0.0.1 for redirect_uris per RFC 8252 and ATproto spec
- Added proper grapheme counting using RichText API instead of character length
- Fixed thread splitting to account for link suffix and thread indicators in grapheme limits
- Added GOOGLE_EMBEDDING_DIMENSIONS env var to all env files
- Added clear-nodes.ts utility script for database management
- Added galaxy node detail page route

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

components/Navigation/DesktopSidebar.tsx

@@ -111,11 +111,8 @@ export function DesktopSidebar() {
 
         <Divider my="md" color="#373A40" />
 
-        <NavLink
-          label="Profile"
-          leftSection={<Box style={{ width: '40px', display: 'flex', alignItems: 'center', justifyContent: 'center' }}><UserMenu /></Box>}
-          variant="filled"
-        />
+        {/* User Menu - styled like other nav items */}
+        <UserMenu showLabel={true} />
 
         {/* Development state panel */}
         {process.env.NODE_ENV === 'development' && (