feat(chat): add agent attachments and shared conversation confirmation

scripts/test-agent-request-payload.cjs

@@ -0,0 +1,38 @@
+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')
+
+const source = ts.createSourceFile('useAiAgent.ts', fs.readFileSync(require.resolve('../src/renderer/src/features/workspace/useAiAgent.ts'), 'utf8'), ts.ScriptTarget.Latest, true)
+let payloadExpression
+function visit(node) {
+  if (ts.isCallExpression(node) && node.expression.getText(source) === 'JSON.stringify' && node.arguments[0]?.getText(source).includes('options.attachments')) {
+    payloadExpression = node.getText(source)
+  }
+  ts.forEachChild(node, visit)
+}
+visit(source)
+assert.ok(payloadExpression, 'Agent request JSON serialization must exist')
+
+function serialize(attachments) {
+  return JSON.parse(vm.runInNewContext(payloadExpression, {
+    courseId: 'course-1', weekNumber: 3, request: '설정 위치 알려줘', options: { attachments },
+    context: { modules: [{ name: 'Control', files: [] }], runtimeLogs: [] }
+  }))
+}
+
+for (const attachments of [undefined, []]) {
+  test(`omits attachments when ${attachments ? 'empty' : 'undefined'}`, () => {
+    const body = serialize(attachments)
+    assert.equal(Object.hasOwn(body, 'attachments'), false)
+    assert.equal(body.request, '설정 위치 알려줘')
+    assert.equal(body.modules[0].name, 'Control')
+    assert.equal(body.week, 3)
+  })
+}
+
+test('preserves actual attachment contents rather than silently dropping them', () => {
+  const attachments = [{ name: 'config.yaml', content: 'steering: ackermann' }]
+  assert.deepEqual(serialize(attachments).attachments, attachments)
+})