First Wave 2 (safe refactor) slice. Move the read-only stats/overview aggregation
out of the 3.3k-line JobApplicationsController into a dedicated, injectable
AnalyticsService, and lift its response DTOs (JobStats, FunnelStagePoint,
ResponseRatePoint, CompanyActivityPoint, AnalyticsOverviewDto) into
Models/AnalyticsDtos.cs.
- GetStats: ~44 lines -> 3 (delegates to AnalyticsService.GetStatsAsync).
- GetAnalyticsOverview: ~82 lines -> 3 (delegates to GetAnalyticsOverviewAsync).
- Registered AddScoped<AnalyticsService>(); controller keeps an optional ctor
param with a `?? new AnalyticsService(db)` fallback so the 6 test sites that
construct the controller directly keep compiling.
- Logic is byte-identical (same tenant-scoped context, same projections) so
behaviour is preserved.
Backend suite: 92/92 green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Both endpoints materialised full JobApplication rows (GetAnalyticsOverview also
Include-d full Company) purely to aggregate a few fields, dragging the large
Description/TranslatedDescription/TailoredCvText/Notes/CoverLetter blobs over
the wire on every dashboard load. Project to only the columns each aggregation
needs (mirrors the existing GetTagTrends pattern). Behaviour is identical;
aggregation stays in memory over a small per-tenant set.
Backend suite: 92/92 green.
Note: the planned hot-path *index* migration is deferred — the committed EF
ModelSnapshot is stale (21 lines, no entities), so `migrations add` cannot
produce a clean incremental diff. Resyncing the snapshot is a prerequisite and
is tracked as its own task.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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