feat: queue depth trend sparkline on dashboard#36
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Add a "Queue Depth — Last 12 Hours" card to the dashboard showing estimated queue depth at 12 hourly snapshots. Depth at time T is computed as jobs created before T that have not yet finished by T — DB-agnostic via a single pluck and Ruby-side grouping, mirroring the throughput chart pattern. Bars are purple to distinguish from the blue throughput and red failure rate charts. Empty state shown when no active jobs exist in the window. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Move all four index queries (stats, throughput, sparkline, depth_sparkline) out of DashboardController into DashboardStats, mirroring the QueueStats pattern. Controller index action is now 5 lines. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Controller index action is now one line. DashboardStats#stats renamed to #counts to avoid @stats.stats in the view. View uses dot notation: @stats.counts[:key], @stats.throughput, @stats.sparkline, @stats.depth_sparkline. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
DashboardController#discard_all_blocked was a custom-named action; extract it to BlockedJobsController#destroy following the 7-action Rails convention. Dashboard "Retry All Failed" button now routes to the existing RetryFailedJobsController#create (retry_all_failed_jobs_path) eliminating DashboardController#retry_all_failed as well. Routes: drop two custom POST routes; add singular resource :blocked_jobs. Specs: move blocked-jobs coverage to blocked_jobs_spec.rb; retry_all coverage already exists in failed_jobs_spec.rb. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Track remaining non-standard actions: QueuesController pause/resume and Queues::JobsController discard_all. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
pluck(:created_at, :finished_at)and Ruby-side grouping, matching the throughput chart patternTest plan
bundle exec rake dev:reset) and visit/jobs— the "Queue Depth — Last 12 Hours" card appears below the throughput chart with purple bars🤖 Generated with Claude Code