feat(pda): persist and batch cabinet picking

tests/picking-store.test.mjs

@@ -0,0 +1,21 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readFile } from 'node:fs/promises'
+
+const source = await readFile(new URL('../stores/picking.js', import.meta.url), 'utf8')
+
+test('picking drafts are persisted under operator, task and cabinet identity', () => {
+  assert.match(source, /pda-picking-draft/)
+  assert.match(source, /operatorId/)
+  assert.match(source, /taskId/)
+  assert.match(source, /containerNo/)
+  assert.match(source, /uni\.setStorageSync\(key/)
+  assert.match(source, /uni\.getStorageSync\(key/)
+  assert.match(source, /uni\.removeStorageSync\(key/)
+})
+
+test('draft restore rejects a different operator or task', () => {
+  assert.match(source, /saved\.operatorId !== identityValue\(identity\)\.operatorId/)
+  assert.match(source, /saved\.taskId !== identityValue\(identity\)\.taskId/)
+  assert.match(source, /saved\.containerNo !== identityValue\(identity\)\.containerNo/)
+})