feat: collapse mobile note after first backfill

koc-portal/app/globals.css

@@ -1050,6 +1050,11 @@ footer {
   padding: 34px 38px;
 }
 
+.mobile-note-summary,
+.mobile-note-collapse-trigger {
+  display: none;
+}
+
 .note-document-meta {
   display: flex;
   gap: 8px;
@@ -1810,6 +1815,64 @@ footer {
     border-radius: 16px;
   }
 
+  .note-document.mobile-collapsed {
+    padding: 16px;
+  }
+
+  .note-document.mobile-collapsed .note-document-content {
+    display: none;
+  }
+
+  .note-document.mobile-collapsed .mobile-note-summary {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 14px;
+  }
+
+  .mobile-note-summary > div {
+    display: grid;
+    min-width: 0;
+    gap: 4px;
+  }
+
+  .mobile-note-summary span {
+    color: var(--green);
+    font-size: 9px;
+    font-weight: 750;
+  }
+
+  .mobile-note-summary strong {
+    overflow: hidden;
+    color: var(--ink);
+    font-size: 13px;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .mobile-note-summary small {
+    color: #899590;
+    font-size: 8px;
+  }
+
+  .mobile-note-summary button,
+  .mobile-note-collapse-trigger {
+    flex: 0 0 auto;
+    min-height: 34px;
+    padding: 0 12px;
+    border: 1px solid #cfe1d9;
+    border-radius: 9px;
+    color: var(--green-deep);
+    background: #f2f8f5;
+    font-size: 9px;
+    font-weight: 700;
+  }
+
+  .mobile-note-collapse-trigger {
+    display: block;
+    margin: 14px 0 0 auto;
+  }
+
   .note-document h1 {
     font-size: 28px;
   }

koc-portal/app/page.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { zipSync } from "fflate";
-import { ChangeEvent, FormEvent, useCallback, useEffect, useMemo, useState } from "react";
+import { ChangeEvent, FormEvent, useCallback, useEffect, useMemo, useRef, useState } from "react";
 import {
   formatShanghaiDate as formatDate,
   parseStoredDate,
@@ -96,6 +96,13 @@ function partnerApi(path: "/api/partner" | "/api/partner-upload") {
   return `${resolveAdminOrigin()}${path}`;
 }
 
+function isMobilePortalViewport() {
+  return (
+    typeof window !== "undefined" &&
+    window.matchMedia("(max-width: 620px)").matches
+  );
+}
+
 function statusLabel(item: Assignment, taskType = "content_publish") {
   if (taskType === "screenshot_collect") {
     return item.result_submitted_at ? "已提交" : "待提交";
@@ -280,6 +287,8 @@ export default function Home() {
     src: string;
     alt: string;
   } | null>(null);
+  const [noteContentCollapsed, setNoteContentCollapsed] = useState(false);
+  const submitCardRef = useRef<HTMLFormElement | null>(null);
   const publishScreenshotPreview = useFilePreview(screenshot);
   const creatorScreenshotPreview = useFilePreview(creatorScreenshot);
   const taskResultPreviews = useMemo(
@@ -384,6 +393,9 @@ export default function Home() {
         selected.exposure === null ? "" : String(selected.exposure),
       );
       setCreatorViews(selected.views === null ? "" : String(selected.views));
+      setNoteContentCollapsed(
+        Boolean(selected.publish_url) && isMobilePortalViewport(),
+      );
     }, 0);
     return () => window.clearTimeout(timer);
   }, [selected]);
@@ -794,6 +806,7 @@ export default function Home() {
   const submitNote = async (event: FormEvent) => {
     event.preventDefault();
     if (!selected) return;
+    const isFirstBackfill = !selected.publish_url;
     try {
       setWorking(true);
       if (screenshot) {
@@ -818,6 +831,15 @@ export default function Home() {
       if (!response.ok) throw new Error(result.error || "回填失败");
       await loadTask(taskToken, claimToken, delegationToken);
       setScreenshot(null);
+      if (isFirstBackfill && isMobilePortalViewport()) {
+        setNoteContentCollapsed(true);
+        window.setTimeout(() => {
+          submitCardRef.current?.scrollIntoView({
+            behavior: "smooth",
+            block: "start",
+          });
+        }, 120);
+      }
       setToast("这篇笔记已回填，不会与其他笔记错配");
     } catch (reason) {
       setToast(reason instanceof Error ? reason.message : "回填失败");
@@ -1104,11 +1126,41 @@ export default function Home() {
         </header>
         <button className="back-link" onClick={closeNote}>← 返回我的笔记</button>
         <div className="detail-grid">
-          <article className="note-document">
+          <article
+            className={`note-document ${
+              noteContentCollapsed ? "mobile-collapsed" : ""
+            }`}
+          >
+            <div className="mobile-note-summary">
+              <div>
+                <span>笔记内容已收起</span>
+                <strong>{selected.title}</strong>
+                <small>
+                  {selected.images.length} 张配图 · 已完成首次回填
+                </small>
+              </div>
+              <button
+                type="button"
+                aria-expanded={!noteContentCollapsed}
+                onClick={() => setNoteContentCollapsed(false)}
+              >
+                展开笔记内容
+              </button>
+            </div>
+            <div className="note-document-content">
             <div className="note-document-meta">
               <span>笔记 {activeBatch.assignments.findIndex((item) => item.id === selected.id) + 1}</span>
               <span>飞书源行 {selected.source_row ?? "—"}</span>
             </div>
+            {selected.publish_url && (
+              <button
+                type="button"
+                className="mobile-note-collapse-trigger"
+                onClick={() => setNoteContentCollapsed(true)}
+              >
+                收起笔记内容
+              </button>
+            )}
             <div className="note-title-row">
               <h1>{selected.title}</h1>
               <button
@@ -1185,9 +1237,10 @@ export default function Home() {
                 </div>
               </section>
             )}
+            </div>
           </article>
 
-          <form className="submit-card" onSubmit={submitNote}>
+          <form ref={submitCardRef} className="submit-card" onSubmit={submitNote}>
             <div className="submit-heading">
               <div>
                 <p className="micro">逐篇回填</p>