Faster NICE Classes Page with Timeframe Leaders

The NICE Classifications page just got a lot faster — we've added caching so it loads in a snap instead of crunching numbers on every visit. We've also upgraded the Leaders column to show the top 3 filers in each class (instead of just one), and each leader links to their filings on WikiTrademarks so you can dig deeper. Plus, there's a new timeframe toggle — switch between Weekly, Monthly, Last 365 Days, and All Time to see who's leading each class right now versus historically. Whether you're tracking which companies are most active in software (Class 9) this week or who dominates advertising services (Class 35) all time, this makes it easy to spot trends at a glance.