feat: add props system and refactor asset library architecture

tests/unit/script-view/selection-sync.test.ts

@@ -0,0 +1,43 @@
+import { describe, expect, it } from 'vitest'
+import {
+  reuseStringArrayIfEqual,
+  reuseStringSetIfEqual,
+} from '@/app/[locale]/workspace/[projectId]/modes/novel-promotion/components/script-view/selection-sync'
+
+describe('script view selection sync', () => {
+  it('reuses the previous array reference when ids are unchanged', () => {
+    const previous = ['char-1', 'char-2']
+    const next = ['char-1', 'char-2']
+
+    const result = reuseStringArrayIfEqual(previous, next)
+
+    expect(result).toBe(previous)
+  })
+
+  it('returns the next array when ids changed', () => {
+    const previous = ['char-1', 'char-2']
+    const next = ['char-1', 'prop-1']
+
+    const result = reuseStringArrayIfEqual(previous, next)
+
+    expect(result).toBe(next)
+  })
+
+  it('reuses the previous set reference when selected appearance keys are unchanged', () => {
+    const previous = new Set(['char-1::Base', 'char-2::Alt'])
+    const next = new Set(['char-2::Alt', 'char-1::Base'])
+
+    const result = reuseStringSetIfEqual(previous, next)
+
+    expect(result).toBe(previous)
+  })
+
+  it('returns the next set when selected appearance keys changed', () => {
+    const previous = new Set(['char-1::Base'])
+    const next = new Set(['char-1::Base', 'char-2::Alt'])
+
+    const result = reuseStringSetIfEqual(previous, next)
+
+    expect(result).toBe(next)
+  })
+})