Improve workspace sidebar and file panel

frontend/app/app/api/claw/files/route.ts

@@ -1,6 +1,11 @@
-import { readFile, stat } from "node:fs/promises";
+import { readdir, readFile, stat } from "node:fs/promises";
 import path from "node:path";
-import { accountBaseRoot, getCurrentAccount } from "@/lib/claw-auth";
+import {
+	accountBaseRoot,
+	accountSessionInputRoot,
+	accountSessionOutputRoot,
+	getCurrentAccount,
+} from "@/lib/claw-auth";
 
 export const runtime = "nodejs";
 
@@ -11,8 +16,15 @@ export async function GET(req: Request) {
 
 	const url = new URL(req.url);
 	const requestedPath = url.searchParams.get("path");
+	const sessionId = url.searchParams.get("session_id");
+	if (!requestedPath && sessionId) {
+		return Response.json({
+			input: await listSessionFiles(account.id, sessionId, "input"),
+			output: await listSessionFiles(account.id, sessionId, "output"),
+		});
+	}
 	if (!requestedPath) {
-		return Response.json({ error: "缺少文件路径" }, { status: 400 });
+		return Response.json({ error: "缺少文件路径或会话 ID" }, { status: 400 });
 	}
 
 	const accountRoot = path.resolve(accountBaseRoot(account.id));
@@ -38,6 +50,43 @@ export async function GET(req: Request) {
 	}
 }
 
+async function listSessionFiles(
+	accountId: string,
+	sessionId: string,
+	kind: "input" | "output",
+) {
+	const accountRoot = path.resolve(accountBaseRoot(accountId));
+	const dir =
+		kind === "input"
+			? accountSessionInputRoot(accountId, sessionId)
+			: accountSessionOutputRoot(accountId, sessionId);
+	const resolvedDir = path.resolve(dir);
+	if (!resolvedDir.startsWith(`${accountRoot}${path.sep}`)) return [];
+
+	try {
+		const entries = await readdir(resolvedDir, { withFileTypes: true });
+		const files = await Promise.all(
+			entries
+				.filter((entry) => entry.isFile())
+				.map(async (entry) => {
+					const filePath = path.join(resolvedDir, entry.name);
+					const fileStat = await stat(filePath);
+					return {
+						name: entry.name,
+						path: filePath,
+						kind,
+						size: fileStat.size,
+						modified_at: fileStat.mtime.toISOString(),
+						download_url: `/api/claw/files?path=${encodeURIComponent(filePath)}`,
+					};
+				}),
+		);
+		return files.sort((a, b) => b.modified_at.localeCompare(a.modified_at));
+	} catch {
+		return [];
+	}
+}
+
 function contentTypeFor(filePath: string) {
 	const ext = path.extname(filePath).toLowerCase();
 	if (ext === ".json") return "application/json; charset=utf-8";