#7231 feat(secrets): reveal visible values to members

Summary

• Let Credential Members reveal visible workspace secret values in Settings without granting edit access
• Keep the existing visibility helper copy and document the member reveal behavior in the English credentials guide

Type of Change

• New feature

Testing

• bunx vitest run "app/api/workspaces/[id]/environment/route.test.ts" "app/workspace/[workspaceId]/settings/components/secrets/components/secret-value-field/secret-value-field.test.tsx" (10 tests)
• bun run lint
• bun run check:audits
• bun run docs-manifest:check
• bun run type-check

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)