diff --git a/docs/decisions/ADR-001-recharts3-upgrade.md b/docs/decisions/ADR-001-recharts3-upgrade.md
deleted file mode 100644
index 82f4f57d..00000000
--- a/docs/decisions/ADR-001-recharts3-upgrade.md
+++ /dev/null
@@ -1,51 +0,0 @@
-# ADR-001: Recharts 2 → 3 Upgrade
-
-**Status:** Accepted
-
-**Date:** 2026-07-04
-
-## Context
-
-The project used recharts 2.15.4. PR #78 (2026-04-22) upgraded to recharts ^3.8.1 to unblock Tailwind CSS v4 (recharts 3 requires React 19 / Tailwind v4 compatible peer deps). The breaking change was already absorbed in the codebase.
-
-### Breaking change absorbed
-
-Recharts 3 removed `payload`, `label`, and coordinate props from the `ComponentProps` type (used by `Tooltip`, `Legend`, and `Customized` components). The types were moved to named exports `DefaultLegendContentProps` and `TooltipContentProps`.
-
-## Decision
-
-Upgrade `recharts` from 2.15.4 to ^3.8.1 with the import type pivot:
-
-```typescript
-// Before (recharts 2)
-import type { ContentType } from 'recharts/types/component/DefaultLegendContent';
-
-// After (recharts 3)
-import type { DefaultLegendContentProps, TooltipContentProps } from 'recharts';
-```
-
-The import path change is the only migration cost. No runtime API changes affected the project's chart usage.
-
-## Consequences
-
-### Positive
-
-- React 19 / Tailwind v4 compatibility via recharts 3 peer deps
-- `types/component/` deep path removed from sensitive type imports
-- TypeScript strict mode compatible (no `@ts-ignore` needed)
-
-### Negative
-
-- None. The breaking type change was fully absorbed in `src/components/ui/chart.tsx:5`.
-
-## Files Changed
-
-- `src/components/ui/chart.tsx` — recharts import type pivot
-- `package.json` — `recharts` dep bumped from 2.15.4 to ^3.8.1
-
-## Testing
-
-- `npm run typecheck` — 0 errors
-- `npm run test` — 1103/1103
-- `npm run e2e` — 21/21 (dashboard smoke + chart render)
-- `/dashboard` — manual smoke: charts render with correct axis labels, tooltip on hover, legend visible
diff --git a/package-lock.json b/package-lock.json
index f728f321..81286965 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7221,7 +7221,7 @@
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/@radix-ui/primitive/-/primitive-1.1.3.tgz",
       "integrity": "sha512-JTF99U/6XIjCBo0wqkU5sK10glYe27MRRsfwoiq5zzOEZLHU3A3KCMa5X/azekYRCJ0HlwI0crAXS/5dEHTzDg==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT"
     },
     "node_modules/@radix-ui/react-accordion": {
@@ -10945,7 +10945,7 @@
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/@radix-ui/react-use-controllable-state/-/react-use-controllable-state-1.2.2.tgz",
       "integrity": "sha512-BjasUjixPFdS+NKkypcyyN5Pmg83Olst0+c6vGov0diwTEo6mgdqVR6hxcEgFuh4QrAs7Rc+9KuGJ9TVCj0Zzg==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "@radix-ui/react-use-effect-event": "0.0.2",
@@ -10965,7 +10965,7 @@
       "version": "0.0.2",
       "resolved": "https://registry.npmjs.org/@radix-ui/react-use-effect-event/-/react-use-effect-event-0.0.2.tgz",
       "integrity": "sha512-Qp8WbZOBe+blgpuUT+lw2xheLP8q0oatc9UpmiemEICxGvFLYmHm9QowVZGHtJlGbS6A6yJ3iViad/2cVjnOiA==",
-      "devOptional": true,
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "@radix-ui/react-use-layout-effect": "1.1.1"