FN-6720: add productivity task duration stats
Adds completed-task active-duration analytics to the Command Center Productivity surface.\n\n- Aggregate average, median, p90, total, and completed-task duration metrics from done tasks with recorded active time.\n- Render duration stat cards with unavailable dash sentinels and export matching CSV rows.\n- Cover analytics, dashboard, route, CSV, mobile/tablet layout, and documentation behavior.\n\nFiles changed:\n .changeset/soft-badgers-measure.md | 5 +\n docs/architecture.md | 4 +-\n docs/dashboard-guide.md | 2 +-\n docs/storage.md | 2 +\n .../src/__tests__/productivity-analytics.test.ts | 105 ++++++++++++++++++++-\n packages/core/src/productivity-analytics.ts | 83 +++++++++++++++-\n .../__tests__/CommandCenter.mobile-scroll.test.tsx | 16 ++++\n .../__tests__/CommandCenter.tablet-layout.test.tsx | 19 ++++\n .../command-center/areas/ProductivityArea.tsx | 65 ++++++++++++-\n .../command-center/areas/__tests__/areas.test.tsx | 65 ++++++++++++-\n .../components/command-center/areas/areaShared.ts | 12 +++\n .../src/__tests__/command-center-csv.test.ts | 8 ++\n .../register-command-center-routes.test.ts | 22 +++++\n packages/dashboard/src/command-center-csv.ts | 5 +\n 14 files changed, 404 insertions(+), 9 deletions(-)
Fusion-Task-Id: FN-6720
Fusion-Task-Lineage: aa0980eb-d156-4dca-b6b8-1788570c166b
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