[] Prevent duplicate color values in Color Picker config

[Mitch Goudy (mgoudy91)]

Summary

Improves the Color Picker config flow by preventing admins from saving duplicate swatch hex values, which can create confusing palettes for editors.

Changes

• Detect duplicate color values in the Color Picker config screen using case-insensitive hex matching
• Show inline validation on every conflicting swatch row
• Block app configuration save when duplicate color values are present and surface a notifier error

Updated in:

• apps/color-picker/src/locations/ConfigScreen.tsx
• apps/color-picker/src/components/SwatchEditor.tsx

Notes

• This is framed as a small support-shaped admin UX improvement for easier palette maintenance.
• Verified by running

build
lerna run build --concurrency=1 --stream --since=${SINCE:-master} --include-dependencies in .

[Mitch Goudy (mgoudy91)]

Staging deployment completed against the existing Color Picker staging space.

• PR branch bundle uploaded to the existing staging app definition: 1az8RJ5AOvWt3MdyVsTn3r
• Reused existing staging space: Color Picker (staging) (qs4f3m2az55q)
• App was already installed in that space, so no new installation was needed
• Seeded a minimal demo content type and entry for verification

Links:

• App definition: https://app.contentful.com/account/organizations/6xdLsz6lCsk0yPOccSsDK7/apps/definitions/1az8RJ5AOvWt3MdyVsTn3r/general
• Staging content types: https://app.contentful.com/spaces/qs4f3m2az55q/environments/master/content_types
• Demo entry: https://app.contentful.com/spaces/qs4f3m2az55q/environments/master/entries/7M5ynavyuHavpnTBgiMsH3
• Install deeplink: https://app.contentful.com/deeplink?link=apps&id=1az8RJ5AOvWt3MdyVsTn3r

Verification notes:

• The bundle now includes the duplicate swatch validation change from this PR
• The seeded content type uses an Object field named accentColor assigned to the staging app
• The main behavior change is easiest to verify from the app config screen by creating duplicate hex values and confirming save is blocked with inline validation