feat(downloads): fold download plans into download panel (DL-3)

- Waiting plans (approval / disk space / automation off / queued) are
  active-segment rows on /download-tasks/board, merged by created_at,
  counted, with approve / cancel actions; ?plan= deep links and legacy
  /downloads/plans routes redirect to the panel
- Download detail shows "why this download" (source, purpose, replaced
  version, reasons); raw evaluation in tech info
- Failed / cancelled / expired plans appear in the entity download
  history; rejected / revoked / expired approvals close draft plans
- New GET /acquisition-plans/{id}/why, POST /acquisition-plans/{id}/cancel
- User-facing copy no longer says 下载计划; glossary updated

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

apps/web/app/routes/console/library.$id.tsx

@@ -45,6 +45,7 @@ import { EmptyState, ErrorState, LoadingState } from "~/components/console/empty
 import { consolePath } from "~/components/console/nav.ts";
 import { StatusBadge } from "~/components/console/status-badge.tsx";
 import { TechInfo } from "~/components/console/tech-info.tsx";
+import { DROPPED_STATUS, droppedReason, PURPOSE_LABEL } from "~/components/downloads/plan-format.ts";
 import { evidenceLabel, FieldLockDialog, IdentityDialog, MergeDialog } from "~/components/library/entity-dialogs.tsx";
 import {
   CONTENT_TYPE,
@@ -88,7 +89,7 @@ import { SubscriptionFormDialog } from "~/components/subscriptions/subscription-
 import { Button } from "~/components/ui/button.tsx";
 import { errorMessage } from "~/lib/api.ts";
 import { useUiPrefs } from "~/lib/ui-prefs.ts";
-import { formatBytes, formatDateTime } from "~/lib/utils.ts";
+import { cn, formatBytes, formatDateTime } from "~/lib/utils.ts";
 
 // 作品详情(REQ §13.1 / §13.4.3):实际路径、外部身份映射及状态、元数据来源、各 Slot、候选拒绝理由、
 // 内容单元、下载历史与校验结果,同一页同时展示。
@@ -871,11 +872,7 @@ function DownloadsPanel({ detail }: { detail: LibraryDetail }) {
             {d.downloadTask.name}
           </Link>
           <p className="text-meta text-muted-foreground">
-            {d.plan
-              ? `${d.plan.purpose === "upgrade" ? "升级" : d.plan.purpose === "fill" ? "补缺" : "换源"}计划 · `
-              : d.downloadTask.origin === "adopted"
-                ? "接管 · "
-                : ""}
+            {d.plan ? `${PURPOSE_LABEL[d.plan.purpose]} · ` : d.downloadTask.origin === "adopted" ? "接管 · " : ""}
             {formatDateTime(d.downloadTask.createdAt)}
           </p>
         </div>
@@ -935,15 +932,54 @@ function DownloadsPanel({ detail }: { detail: LibraryDetail }) {
   // 没有下载任务的整理记录(文件管理按路径手动整理等),下载任务的记录已在上表
   const listed = new Set(detail.downloads.map((d) => d.downloadTask.id));
   const manual = (detail.organizationRecords ?? []).filter((r) => !r.downloadTaskId || !listed.has(r.downloadTaskId));
+  // DL-3:没提交到下载器就结束的下载(失败 / 取消 / 过期),原因走原因码表,原码进技术信息
+  const dropped = detail.droppedPlans ?? [];
   return (
     <Panel title="下载历史与校验结果" bodyClassName="p-0 sm:p-0">
-      <DataTable
-        plain
-        columns={columns}
-        rows={detail.downloads}
-        rowKey={(d) => d.downloadTask.id}
-        empty={{ title: manual.length ? "没有下载任务，只有手动整理记录" : "还没有下载记录" }}
-      />
+      {detail.downloads.length || !dropped.length ? (
+        <DataTable
+          plain
+          columns={columns}
+          rows={detail.downloads}
+          rowKey={(d) => d.downloadTask.id}
+          empty={{ title: manual.length ? "没有下载任务，只有手动整理记录" : "还没有下载记录" }}
+        />
+      ) : null}
+      {dropped.length ? (
+        <div className={cn("px-4 py-3 sm:px-5", detail.downloads.length ? "border-t border-border/60" : "")}>
+          <p className="mb-2 text-meta text-muted-foreground">没提交到下载器</p>
+          <ul className="space-y-2">
+            {dropped.map(({ plan, releaseTitle }) => {
+              const st = DROPPED_STATUS[plan.status as keyof typeof DROPPED_STATUS] ?? DROPPED_STATUS.failed;
+              const why = droppedReason(plan.statusReason);
+              return (
+                <li key={plan.id} className="min-w-0">
+                  <div className="flex min-w-0 flex-wrap items-center gap-2">
+                    <StatusBadge tone={st.tone}>{st.label}</StatusBadge>
+                    <Link
+                      to={`${consolePath("downloads")}?plan=${plan.id}`}
+                      className="min-w-0 max-w-full truncate font-mono text-caption text-foreground hover:underline sm:max-w-md"
+                      title={releaseTitle ?? undefined}
+                    >
+                      {releaseTitle ?? "未知资源"}
+                    </Link>
+                    <span className="text-meta text-muted-foreground tabular-nums">
+                      {PURPOSE_LABEL[plan.purpose]} · {formatDateTime(plan.updatedAt)}
+                    </span>
+                  </div>
+                  {why ? <p className="mt-0.5 text-meta text-muted-foreground">{why}</p> : null}
+                  <TechInfo
+                    items={[
+                      { label: "计划 ID", value: plan.id, wide: true },
+                      { label: "原因码", value: plan.statusReason, wide: true },
+                    ]}
+                  />
+                </li>
+              );
+            })}
+          </ul>
+        </div>
+      ) : null}
       {manual.length ? (
         <div className="border-t border-border/60 px-4 py-3 sm:px-5">
           <p className="mb-2 text-meta text-muted-foreground">其他整理记录</p>