feat(agent): add read-only download.list capability

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/agent/src/prompt/format.ts

@@ -0,0 +1,138 @@
+// 给模型看的人话格式(与控制台 apps/web/app/lib/utils.ts formatBytes、labels.ts formatRelative 同口径):
+// 环境层渲染和只读能力的输出(download.list 的 size / progress)共用,避免把原始字节数、ISO 时间交给模型转述。
+
+/** 字节 → "79.4 GB"(1024 进制,与控制台一致);null → null */
+export function humanBytes(bytes: number | null | undefined, decimals = 1): string | null {
+  if (bytes === null || bytes === undefined || !Number.isFinite(bytes)) return null;
+  if (bytes <= 0) return "0 B";
+  const sizes = ["B", "KB", "MB", "GB", "TB", "PB"];
+  const i = Math.min(Math.floor(Math.log(bytes) / Math.log(1024)), sizes.length - 1);
+  return `${Number.parseFloat((bytes / 1024 ** i).toFixed(i === 0 ? 0 : decimals))} ${sizes[i]}`;
+}
+
+/** 0..1 → "37%" */
+export function humanPercent(ratio: number | null | undefined): string | null {
+  if (ratio === null || ratio === undefined || !Number.isFinite(ratio)) return null;
+  return `${Math.round(Math.max(0, Math.min(1, ratio)) * 100)}%`;
+}
+
+/** 本地日期时间 "09-29 16:12"(按给定时区) */
+function clock(d: Date, timeZone?: string): { day: string; time: string } {
+  const f = new Intl.DateTimeFormat("zh-CN", {
+    ...(timeZone ? { timeZone } : {}),
+    year: "numeric",
+    month: "2-digit",
+    day: "2-digit",
+    hour: "2-digit",
+    minute: "2-digit",
+    hour12: false,
+  });
+  const p = Object.fromEntries(f.formatToParts(d).map((x) => [x.type, x.value]));
+  return { day: `${p.year}-${p.month}-${p.day}`, time: `${p.hour === "24" ? "00" : p.hour}:${p.minute}` };
+}
+
+/** 当前时间 "2026-09-30 17:45" */
+export function humanNow(now: Date, timeZone?: string): string {
+  const c = clock(now, timeZone);
+  return `${c.day} ${c.time}`;
+}
+
+/**
+ * 相对时间:刚刚 / N 分钟前 / N 小时前(当天)/ 昨天 16:12 / N 天前;未来时间写"N 小时后"。
+ * 无效或空 → null。
+ */
+export function humanRelative(iso: string | null | undefined, now: Date, timeZone?: string): string | null {
+  if (!iso) return null;
+  const t = new Date(iso);
+  if (Number.isNaN(t.getTime())) return null;
+  const diff = (now.getTime() - t.getTime()) / 1000;
+  const abs = Math.abs(diff);
+  const suffix = diff >= 0 ? "前" : "后";
+  if (abs < 45) return diff >= 0 ? "刚刚" : "马上";
+  if (abs < 3600) return `${Math.round(abs / 60)} 分钟${suffix}`;
+  const a = clock(t, timeZone);
+  const b = clock(now, timeZone);
+  if (a.day === b.day) return `${Math.round(abs / 3600)} 小时${suffix}`;
+  const yesterday = clock(new Date(now.getTime() - 86400_000), timeZone).day;
+  if (diff > 0 && a.day === yesterday) return `昨天 ${a.time}`;
+  if (abs < 86400 * 2) return `${Math.round(abs / 3600)} 小时${suffix}`;
+  return `${Math.round(abs / 86400)} 天${suffix}`;
+}
+
+const KIND_NAMES: Record<string, string> = {
+  qbittorrent: "qBittorrent",
+  transmission: "Transmission",
+  deluge: "Deluge",
+  aria2: "Aria2",
+  jellyfin: "Jellyfin",
+  emby: "Emby",
+  plex: "Plex",
+  pt: "PT 站",
+  public_bt: "公开 BT 站",
+  rss_feed: "自定义 RSS 源",
+  torznab: "Torznab 索引器",
+};
+
+/** 类型代码 → 界面名称(qbittorrent → qBittorrent,pt → PT 站);未知原样返回 */
+export function kindName(kind: string): string {
+  return KIND_NAMES[kind] ?? kind;
+}
+
+const HEALTH_NAMES: Record<string, string> = {
+  healthy: "正常",
+  degraded: "异常",
+  offline: "连不上",
+  unknown: "还没检查过",
+  failing: "连续失败",
+  disabled: "已停用",
+};
+
+/** 健康状态 → 人话 */
+export function healthName(h: string | null | undefined): string {
+  return HEALTH_NAMES[h ?? "unknown"] ?? h ?? "还没检查过";
+}
+
+const DOWNLOAD_STATUS: Record<string, string> = {
+  queued: "排队中",
+  submitting: "提交中",
+  downloading: "下载中",
+  paused: "已暂停",
+  stalled: "无进展",
+  completed: "已完成待整理",
+  importing: "整理中",
+  imported: "已入库",
+  failed: "失败",
+  removed: "已移除",
+  missing: "文件缺失",
+};
+
+const SUBSCRIPTION_STATUS: Record<string, string> = {
+  active: "追更中",
+  paused: "已暂停",
+  pending: "待开始",
+  completed: "已完成",
+  cancelled: "已取消",
+};
+
+/** 下载任务状态 → 界面用词;未知原样返回 */
+export function downloadStatusName(s: string): string {
+  return DOWNLOAD_STATUS[s] ?? s;
+}
+
+/** 订阅状态 → 界面用词;未知原样返回 */
+export function subscriptionStatusName(s: string): string {
+  return SUBSCRIPTION_STATUS[s] ?? s;
+}
+
+const ACCOUNT_NAMES: Record<string, string> = {
+  active: "登录正常",
+  invalid: "凭证无效",
+  expired: "登录已失效",
+  challenge: "需要人工验证",
+  unknown: "登录状态未知",
+};
+
+/** 站点账号状态 → 人话 */
+export function accountName(s: string): string {
+  return ACCOUNT_NAMES[s] ?? s;
+}

packages/contracts/src/capabilities-io.ts

@@ -322,6 +322,47 @@ export const DownloadInspectOutput = z.object({
   otherMatches: z.array(Id),
 });
 
+/** download.list(AG-5):列出下载任务(按状态 / 作品 / 名称筛选),给模型"先列再看",不用向用户要 ID 或 hash */
+export const DownloadListInput = z.object({
+  /** 只列这些状态;缺省全部(不含已移除) */
+  status: z.array(DownloadStatus).max(11).optional(),
+  /** 按下载任务名或作品名模糊匹配(至少 2 个字符) */
+  query: z.string().trim().min(2).max(200).optional(),
+  mediaEntityId: Id.optional(),
+  /** 也列外部任务(不是本工具提交的);缺省只列本工具管理的 */
+  includeExternal: z.boolean().default(false),
+  limit: z.number().int().min(1).max(50).default(20),
+});
+export const DownloadListOutput = z.object({
+  total: NonNegInt,
+  /** 按状态计数(筛选后、limit 前) */
+  byStatus: z.array(z.object({ status: DownloadStatus, label: z.string(), count: NonNegInt })),
+  items: z.array(
+    z.object({
+      /** 下载任务 ID,交给 download.inspect / download.recheck */
+      id: Id,
+      name: z.string(),
+      /** 关联作品名 */
+      title: z.string().nullable(),
+      status: DownloadStatus,
+      /** 界面用词:下载中 / 已入库 / 失败… */
+      statusLabel: z.string(),
+      /** "37%" */
+      progress: z.string(),
+      /** "12.3 GB";未知为 null */
+      size: z.string().nullable(),
+      downloader: z.string().nullable(),
+      managed: z.boolean(),
+      /** 相对时间:"3 小时前" */
+      lastProgress: z.string().nullable(),
+      noProgressSince: z.string().nullable(),
+      completed: z.string().nullable(),
+      /** 最近一次错误的一句话 */
+      error: z.string().nullable(),
+    }),
+  ),
+});
+
 /** downloader.list(FIX-7):已配置的下载器与媒体服务器(只读本地记录,不含地址和凭证) */
 export const DownloaderListInput = z.object({
   includeDisabled: z.boolean().default(true),
@@ -879,6 +920,7 @@ export const CAPABILITY_IO = {
   "subscription.list": { input: SubscriptionListInput, output: SubscriptionListOutput },
   "decision.list": { input: DecisionListInput, output: DecisionListOutput },
   "download.inspect": { input: DownloadInspectInput, output: DownloadInspectOutput },
+  "download.list": { input: DownloadListInput, output: DownloadListOutput },
   "downloader.list": { input: DownloaderListInput, output: DownloaderListOutput },
   "agent.spawn": { input: AgentSpawnInput, output: AgentSpawnOutput },
   "agent.await": { input: AgentAwaitInput, output: AgentAwaitOutput },
@@ -956,6 +998,8 @@ export type DecisionListInput = z.infer<typeof DecisionListInput>;
 export type DecisionListOutput = z.infer<typeof DecisionListOutput>;
 export type DownloadInspectInput = z.infer<typeof DownloadInspectInput>;
 export type DownloadInspectOutput = z.infer<typeof DownloadInspectOutput>;
+export type DownloadListInput = z.infer<typeof DownloadListInput>;
+export type DownloadListOutput = z.infer<typeof DownloadListOutput>;
 export type DownloaderListInput = z.infer<typeof DownloaderListInput>;
 export type DownloaderListOutput = z.infer<typeof DownloaderListOutput>;
 export type AgentSpawnInput = z.infer<typeof AgentSpawnInput>;

packages/contracts/src/capability.ts

@@ -69,6 +69,7 @@ export const CAPABILITY_IDS = [
   "subscription.list",
   "decision.list",
   "download.inspect",
+  "download.list",
   "downloader.list",
   "agent.spawn",
   "agent.await",
@@ -330,6 +331,18 @@ export const CAPABILITY_CATALOG: Record<KnownCapabilityId, CapabilityDescriptor>
     true,
     false,
   ),
+  // AG-5:先列再看。反例里模型要用户给下载任务 ID / 种子 hash,其实自己能列
+  "download.list": d(
+    "download.list",
+    "列出下载任务",
+    "按状态、作品或名称列出下载任务（名称、作品、状态、进度、体积、下载器、最近进展与错误），附按状态计数；缺省只列本工具管理的。问下载进度、找失败或卡住的下载、要下载任务 ID 时先用它，再用 download.inspect 看其中一个；不要向用户要 ID 或 hash",
+    "read",
+    "DownloadList",
+    "read",
+    "low",
+    true,
+    false,
+  ),
   // FIX-7:智能体原先只能从站点列表推断下载器是否接入(site.list 不含下载器),汇报成"下载器不在系统内"
   "downloader.list": d(
     "downloader.list",
@@ -627,6 +640,7 @@ export const CAPABILITY_ACTIVITY: Record<KnownCapabilityId, CapabilityActivity>
   "subscription.list": act("查", "订阅"),
   "decision.list": act("查", "待处理事项"),
   "download.inspect": act("查", "下载任务", "个"),
+  "download.list": act("列", "下载任务"),
   "downloader.list": act("查", "下载器"),
   "agent.spawn": act("派出", "子会话", "个"),
   "agent.await": act("等", "子会话"),