Consolidate company admin screens: health badge on list, tabbed detail page

Companies/Index:
- Added Health badge column (Healthy / At Risk / Critical / Never Active)
  with the numeric score in a tooltip; computed from the same signals as
  CompanyHealth/Index using the new shared CompanyHealthHelper

Companies/Details:
- Converted flat card layout to five tabs: Overview, Users, Subscription,
  Onboarding, Health; URL hash is preserved so the active tab survives
  page refresh and back navigation
- Subscription tab shows plan/status/dates with an expiry countdown and a
  "Manage Subscription & Features" button to the full Manage page
- Onboarding tab shows wizard completion, milestone progress bar, and
  first-activity dates (previously only on the standalone page)
- Health tab shows score gauge, risk badge, and individual risk signals
  with a link through to the full CompanyHealth dashboard
- JS moved to wwwroot/js/companies-details.js (avoids inline-script failures)

Infrastructure:
- Extracted ComputeHealth / ToRiskLevel / ChurnRisk to CompanyHealthHelper.cs
  (same Controllers namespace); CompanyHealthController delegates to it
- CompanyCountSummary extended with Jobs30Counts, Jobs90Counts, LastLoginDates
  (3 extra GROUP BY queries scoped to the current page IDs, not all companies)
- CompanyListDto gains HealthScore, HealthRisk, LastLoginDate

Navigation:
- Removed "Onboarding Progress" hub card from People & Activity; the data
  is now surfaced directly on the Companies/Details Onboarding tab

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Infrastructure/Services/CompanyListService.cs

@@ -67,6 +67,10 @@ public class CompanyListService : ICompanyListService
     /// <inheritdoc/>
     public async Task<CompanyCountSummary> GetCountSummaryAsync(IReadOnlyList<int> companyIds)
     {
+        var now = DateTime.UtcNow;
+        var d30 = now.AddDays(-30);
+        var d90 = now.AddDays(-90);
+
         var jobCounts = await _context.Jobs
             .IgnoreQueryFilters()
             .Where(j => companyIds.Contains(j.CompanyId) && !j.IsDeleted)
@@ -98,6 +102,32 @@ public class CompanyListService : ICompanyListService
             x => x.CompanyId,
             x => new CompanyWizardInfo(true, x.SetupWizardCompletedAt, x.SetupWizardCompletedByName));
 
-        return new CompanyCountSummary(jobCounts, quoteCounts, customerCounts, wizardInfo);
+        var jobs30 = await _context.Jobs
+            .IgnoreQueryFilters()
+            .Where(j => companyIds.Contains(j.CompanyId) && !j.IsDeleted && j.CreatedAt >= d30)
+            .GroupBy(j => j.CompanyId)
+            .Select(g => new { g.Key, Count = g.Count() })
+            .ToDictionaryAsync(x => x.Key, x => x.Count);
+
+        var jobs90 = await _context.Jobs
+            .IgnoreQueryFilters()
+            .Where(j => companyIds.Contains(j.CompanyId) && !j.IsDeleted && j.CreatedAt >= d90)
+            .GroupBy(j => j.CompanyId)
+            .Select(g => new { g.Key, Count = g.Count() })
+            .ToDictionaryAsync(x => x.Key, x => x.Count);
+
+        var lastLoginRaw = await _context.Users
+            .IgnoreQueryFilters()
+            .Where(u => companyIds.Contains(u.CompanyId) && u.LastLoginDate != null)
+            .GroupBy(u => u.CompanyId)
+            .Select(g => new { CompanyId = g.Key, Last = g.Max(u => u.LastLoginDate) })
+            .ToListAsync();
+
+        var lastLogins = lastLoginRaw.ToDictionary(
+            x => x.CompanyId,
+            x => x.Last);
+
+        return new CompanyCountSummary(jobCounts, quoteCounts, customerCounts, wizardInfo,
+            jobs30, jobs90, lastLogins);
     }
 }