Polish analytics dashboard and fix long-range reports

[thebuilder]

Summary

• align preset and custom date handling with Vercel reporting windows
• use weekly buckets for 31–90 day ranges and monthly buckets for longer ranges
• format chart labels and tooltips according to hourly, daily, weekly, and monthly granularity
• load dashboard reports independently and defer UTM requests until those tabs are used
• polish chart styling, table density, card footers, link affordances, favicons, filters, and date-picker layering
• keep loading skeletons aligned with the final 40px row layout

Why

Long reporting ranges were requesting unsupported granularities, causing the 90-day and 12-month summary/history reports to fail while ranking cards still loaded. Several dashboard interactions also needed clearer affordances and more consistent density.

Impact

The dashboard now returns long-range history using supported bucket sizes, labels those buckets accurately, avoids unnecessary UTM requests, and presents a denser and more consistent analytics UI.

Verification

• corepack pnpm --dir src/TheBuilder.WebAnalytics/Client test — 138 tests passed
• corepack pnpm --dir src/TheBuilder.WebAnalytics/Client build — passed
• dotnet test --no-restore — 158 passed; 5 existing AnalyticsDocumentRouteServiceTests fail because the loaded Umbraco binary lacks IContentService.GetById(Guid)