fix: use actual local platform ID to resolve linked ROS settings

scripts/test-linked-ros-settings.cjs

@@ -0,0 +1,37 @@
+const { test } = require('node:test')
+const assert = require('node:assert/strict')
+const fs = require('node:fs')
+const vm = require('node:vm')
+const ts = require('typescript')
+
+function setup() {
+  const data = new Map()
+  const exports = {}
+  vm.runInNewContext(ts.transpileModule(fs.readFileSync(require.resolve('../src/renderer/src/features/workspace/sourceSettings.ts'), 'utf8'), {
+    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2022 },
+  }).outputText, {
+    exports,
+    require: () => ({ STUDIO_SOURCE_SETTINGS_STORAGE_KEY: 'test-settings' }),
+    window: { localStorage: { getItem: key => data.get(key) ?? null, setItem: (key, value) => data.set(key, value) } },
+  })
+  return exports
+}
+
+test('remote workspace reads local domain and linked platform by actual platform ID', () => {
+  const api = setup()
+  api.storeStudioSourceSettings('local-platform-uuid', { ...api.defaultStudioSourceSettings, rosDomainId: '75', rosLinkedPlatformId: 'yahboom-uuid' })
+  const result = api.readLocalStudioSourceSettings([
+    { id: 'yahboom-uuid', platformKey: 'yahboom', sourceSettings: { rosDomainId: '77' } },
+    { id: 'local-platform-uuid', platformKey: 'futuredrive-local-pc' },
+  ])
+  assert.equal(result.rosDomainId, '75')
+  assert.equal(result.rosLinkedPlatformId, 'yahboom-uuid')
+})
+
+test('local platform defaults and unlinked selection are preserved', () => {
+  const api = setup()
+  const platforms = [{ id: 'local-platform-uuid', platformKey: 'futuredrive-local-pc', sourceSettings: { rosDomainId: '76' } }]
+  assert.equal(api.readLocalStudioSourceSettings(platforms).rosDomainId, '76')
+  api.storeStudioSourceSettings('local-platform-uuid', { ...api.defaultStudioSourceSettings, rosDomainId: '75', rosLinkedPlatformId: null })
+  assert.equal(api.readLocalStudioSourceSettings(platforms).rosLinkedPlatformId, null)
+})