---
phase: 01-design-foundation-and-primitives
plan: 01
subsystem: ui
tags: [shadcn, recharts, oklch, i18n, design-tokens, css-variables]

# Dependency graph
requires: []
provides:
  - "ChartContainer, ChartTooltip, ChartTooltipContent wrappers (chart.tsx)"
  - "Collapsible, CollapsibleTrigger, CollapsibleContent primitives (collapsible.tsx)"
  - "Semantic OKLCH status tokens (over-budget, on-budget, budget-bar-bg)"
  - "Two-tier category colors (dark text + lighter chart fills)"
  - "Dashboard i18n keys in en.json and de.json (carryover, vsBudget, overBudget, underBudget, onTrack, loading)"
affects: [01-02, 02-dashboard-components, 03-dashboard-page, 04-polish]

# Tech tracking
tech-stack:
  added: [shadcn/chart, shadcn/collapsible]
  patterns: [oklch-two-tier-colors, semantic-status-tokens, chart-fill-variants]

key-files:
  created:
    - src/components/ui/chart.tsx
    - src/components/ui/collapsible.tsx
  modified:
    - src/index.css
    - src/i18n/en.json
    - src/i18n/de.json

key-decisions:
  - "Applied initialDimension patch for Recharts v3 compatibility (shadcn-ui/ui#9892)"
  - "Category colors darkened to oklch ~0.55 lightness for WCAG 4.5:1 text contrast against white"
  - "Chart fills kept lighter at oklch ~0.65-0.70 for non-text use (3:1 minimum contrast)"
  - "Investment hue adjusted from 290 to 285 for better OKLCH gamut fit"

patterns-established:
  - "Two-tier color system: dark --color-{category} for text, lighter --color-{category}-fill for chart areas"
  - "Semantic status tokens: --color-over-budget (red), --color-on-budget (green) for budget comparison UI"

requirements-completed: [UI-DESIGN-01, UI-DASH-01]

# Metrics
duration: 3min
completed: 2026-03-16
---

# Phase 1 Plan 1: Design Primitives Summary

**shadcn chart/collapsible primitives with Recharts v3 patch, two-tier OKLCH category colors, semantic budget status tokens, and bilingual dashboard i18n keys**

## Performance

- **Duration:** 3 min
- **Started:** 2026-03-16T11:12:04Z
- **Completed:** 2026-03-16T11:14:52Z
- **Tasks:** 2
- **Files modified:** 5

## Accomplishments
- Installed shadcn chart and collapsible UI primitives with Recharts v3 initialDimension compatibility patch
- Extended OKLCH color token system with two-tier category colors (dark text + lighter fills) and 3 semantic budget status tokens
- Added 6 new dashboard i18n keys to both en.json and de.json at full parity

## Task Commits

Each task was committed atomically:

1. **Task 1: Install shadcn primitives and patch chart.tsx** - `d89d70f` (feat)
2. **Task 2: Extend color tokens and add i18n keys** - `4f74c79` (feat)

## Files Created/Modified
- `src/components/ui/chart.tsx` - ChartContainer, ChartTooltip, ChartTooltipContent wrappers with initialDimension patch
- `src/components/ui/collapsible.tsx` - Collapsible, CollapsibleTrigger, CollapsibleContent radix primitives
- `src/index.css` - Extended @theme inline block with semantic status tokens, chart fill variants, darkened category text colors
- `src/i18n/en.json` - 6 new dashboard keys (carryover, vsBudget, overBudget, underBudget, onTrack, loading)
- `src/i18n/de.json` - Matching 6 German dashboard keys at parity

## Decisions Made
- Applied initialDimension={{ width: 320, height: 200 }} patch since shadcn CLI still generates without it (PR #8486 not yet merged)
- Category text colors darkened to ~0.55 lightness for WCAG 4.5:1 contrast against white card background
- Chart fill variants kept lighter at ~0.65-0.70 for non-text use with 3:1 minimum contrast
- Investment hue adjusted from 290 to 285 for better OKLCH gamut representation

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
- Pre-existing lint errors found in badge.tsx, button.tsx, sidebar.tsx, and useBudgets.ts (5 errors total). These are not caused by this plan's changes and have been logged to deferred-items.md. Build passes; lint failures are in unmodified files only.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- Chart and collapsible primitives ready for Plan 02 component composition
- Color tokens and i18n keys available for all subsequent dashboard UI work
- No blockers for Plan 02 execution

## Self-Check: PASSED

All 5 created/modified files verified present. Both task commits (d89d70f, 4f74c79) verified in git log.

---
*Phase: 01-design-foundation-and-primitives*
*Completed: 2026-03-16*