fix(user): improve cache key and remove redundant route check

- Include sessionTeamId in currentTeam() cache key to prevent stale
  team data when users switch teams
- Update refreshSession() to use new cache key format
- Remove redundant routeIs('settings.index') check since settings.*
  already matches it

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Models/User.php

@@ -319,7 +319,7 @@ class User extends Authenticatable implements SendsEmail
             return null;
         }
 
-        return Cache::remember('team:'.$this->id, 3600, function () use ($sessionTeamId) {
+        return Cache::remember('user:'.$this->id.':team:'.$sessionTeamId, 3600, function () use ($sessionTeamId) {
             return Team::find($sessionTeamId);
         });
     }