fix(pda): make completed loading evidence read-only

tests/loading-completion-state.test.mjs

@@ -1,5 +1,6 @@
 import test from 'node:test'
 import assert from 'node:assert/strict'
+import { readFile } from 'node:fs/promises'
 import {
 	COMPLETION_PHASE,
 	completionPresentation,
@@ -8,6 +9,31 @@ import {
 	shouldReconcileCompletion
 } from '../utils/loading-completion-state.js'
 
+test('reopened processing and completed tasks keep evidence and completion read-only', async () => {
+	const page = await readFile(new URL('../pages/picking/picking.vue', import.meta.url), 'utf8')
+	const methods = ['loadingCompletionState', 'evidenceReadOnly', 'requireEvidenceStage'].map(name => {
+		const method = page.match(new RegExp(`${name}\\(\\) \\{[\\s\\S]*?\\n\\t\\t\\t\\},`))?.[0]
+		assert.ok(method, name)
+		return method
+	})
+	const behavior = new Function('resolveCompletionPhase', 'completionPresentation', `return ({${methods.join('\n')}})`)(resolveCompletionPhase, completionPresentation)
+	for (const workflowStatus of ['PROCESSING', 'COMPLETED']) {
+		const messages = []
+		const context = { remotePick: { workflowStatus, completionCommand: { status: workflowStatus } }, submitting: false, pickingCompleted: true, loadingStageReady: true, showToast(message) { messages.push(message) } }
+		context.loadingCompletionState = behavior.loadingCompletionState.call(context)
+		context.evidenceReadOnly = behavior.evidenceReadOnly.call(context)
+		assert.equal(context.evidenceReadOnly, true)
+		assert.equal(behavior.requireEvidenceStage.call(context), false)
+		assert.deepEqual(messages, [workflowStatus === 'COMPLETED' ? '装柜已完成' : '完成处理中'])
+	}
+	const retry = { remotePick: { workflowStatus: 'COMPLETION_FAILED' }, submitting: false }
+	retry.loadingCompletionState = behavior.loadingCompletionState.call(retry)
+	assert.equal(behavior.evidenceReadOnly.call(retry), false)
+	assert.match(page, /v-if="evidenceReadOnly"[^>]*role="status"/)
+	assert.match(page, /v-else class="loading-complete-btn"/)
+	assert.match(page, /class="evidence-btn evidence-add-btn" :disabled="evidenceReadOnly"/)
+})
+
 test('accepted completion is processing and blocks every repeated mutation', () => {
 	for (const facts of [
 		{ taskStatus: 'COMPLETING' },