fix: align attachment storage model

scripts/verify-attachment-storage-model.mjs

@@ -0,0 +1,80 @@
+#!/usr/bin/env node
+import { mkdtemp, copyFile } from "node:fs/promises";
+import { existsSync } from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { createRequire } from "node:module";
+
+const rootDir = process.cwd();
+const scriptDir = path.dirname(fileURLToPath(import.meta.url));
+const require = createRequire(import.meta.url);
+const jiti = require("jiti")(fileURLToPath(import.meta.url), {
+  alias: {
+    "@/": `${path.join(rootDir, "src")}/`,
+  },
+});
+
+const tempDir = await mkdtemp(path.join(os.tmpdir(), "boss-attachment-model-"));
+const tempStateFile = path.join(tempDir, "boss-state.json");
+const sourceStateFile = path.join(rootDir, "data", "boss-state.json");
+
+if (!existsSync(sourceStateFile)) {
+  throw new Error(`Missing state file: ${sourceStateFile}`);
+}
+
+await copyFile(sourceStateFile, tempStateFile);
+process.env.BOSS_STATE_FILE = tempStateFile;
+process.env.BOSS_RUNTIME_ROOT = rootDir;
+
+const { getAttachmentStorageConfig, readState, writeState } = jiti(path.join(scriptDir, "..", "src", "lib", "boss-data.ts"));
+
+const config = await getAttachmentStorageConfig("17600003315");
+if (config.mode !== "server_file") {
+  throw new Error(`Expected default storage mode server_file, got ${config.mode}`);
+}
+if (!config.updatedAt || typeof config.updatedAt !== "string") {
+  throw new Error("Expected updatedAt to be populated");
+}
+
+const state = await readState();
+const messageId = "script-attachment-message";
+state.projects[0].messages.unshift({
+  id: messageId,
+  sender: "user",
+  senderLabel: "测试用户",
+  body: "Attachment round-trip",
+  sentAt: "2026-03-29T00:00:00+08:00",
+  kind: "attachment",
+  attachments: [
+    {
+      attachmentId: "att-001",
+      fileName: "demo.txt",
+      mimeType: "text/plain",
+      fileSizeBytes: 12,
+      attachmentKind: "text",
+      storageBackend: "server_file",
+      storagePath: "/tmp/demo.txt",
+      previewAvailable: true,
+      uploadedAt: "2026-03-29T00:00:00+08:00",
+      uploadedBy: "17600003315",
+      analysisState: "not_applicable",
+    },
+  ],
+});
+
+await writeState(state);
+const reread = await readState();
+const message = reread.projects[0].messages.find((item) => item.id === messageId);
+
+if (!message?.attachments?.length) {
+  throw new Error("Expected message attachments to round-trip through state");
+}
+if (message.attachments[0].attachmentId !== "att-001") {
+  throw new Error("Expected attachment metadata to persist");
+}
+if (message.attachments[0].storageBackend !== "server_file") {
+  throw new Error("Expected attachment storage backend to persist");
+}
+
+console.log("OK");