feat(analytics): grouped milestone previews, fallback comparator, and regression tests

[romahawk]

Summary

This batch delivers three roadmap items in one pass:

1. Achievements UX depth (grouped categories + locked previews)
2. Analytics comparator clarity (fallback + compare details)
3. Regression safety tests for key mobile/analytics paths

What changed

• Achievements / Milestones
  • Added badge catalog and category grouping helpers.
  • Milestone modal now renders grouped sections with unlocked + locked preview states.
• Analytics comparator
  • Added fallback comparator search to nearest earlier period with data.
  • KPI labels now support source-aware deltas (vs prev, vs last active, n/a).
  • Added compact Compare details toggle for source + ranges.
• Mobile/date hardening and testability
  • Extracted mobile date input class guards into a reusable module.
• Tests
  • Added analytics fallback-window tests.
  • Added achievements catalog grouping/locked preview tests.
  • Added mobile date guard token test.

Files

• src/pages/Dashboard.jsx
• src/pages/dashboard/AnalyticsSection.jsx
• src/components/KpiTiles.jsx
• src/pages/dashboard/DashboardHeader.jsx
• src/components/AnalyticsFilters.jsx
• src/lib/analytics.js
• src/lib/analytics.test.js
• src/lib/achievements/definitions.js
• src/lib/achievements/catalog.js
• src/lib/achievements/catalog.test.js
• src/lib/ui/mobileDateFieldClass.js
• src/lib/ui/mobileDateFieldClass.test.js
• package.json

Validation

• npm run lint
• npm run test
• npm run build
• Visual checks:
  • KPI delta source labels (vs prev / vs last active / n/a)
  • Compare details panel with ranges
  • Grouped milestone modal with locked previews
  • Mobile analytics/date row remains non-overflowing

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Project	Deployment	Actions	Updated (UTC)
smartshooter	Ready	Preview, Comment	Feb 16, 2026 8:48am