feat: 类型帖互动、积分经济与发帖体验

补齐问答采纳/重开、投票匿名与有票禁编、悬赏过期退回、抽奖回帖开奖，并接入积分账本与发帖附件可见性。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/components/home/CommunityPanels.tsx

@@ -67,7 +67,7 @@ function PulseCard({ stats, checkin }: { stats: OverviewStats; checkin?: Checkin
         <span
           className="inline-flex items-center gap-1.5 text-[11px] font-normal normal-case tracking-normal"
           style={{ color: "var(--ink-3)" }}
-          title="近 5 分钟在线"
+          data-tip="近 5 分钟在线"
         >
           <span className="j13-pulse-dot" aria-hidden="true" />
           实时
@@ -124,7 +124,7 @@ function Announcements({ items }: { items: AnnouncementSummary[] }) {
                 <span
                   className="mt-1.5 block truncate text-[13px] leading-snug transition-colors group-hover:text-[var(--accent)]"
                   style={{ color: "var(--ink)" }}
-                  title={a.title}
+                  data-tip={a.title}
                 >
                   {a.title}
                 </span>
@@ -151,7 +151,7 @@ function HotRanking({ posts }: { posts: PostListItem[] }) {
         <ol className="j13-ranklist">
           {posts.map((p, i) => (
             <li key={p.id}>
-              <Link href={`/post/${p.id}`} className="j13-rank group" title={p.title}>
+              <Link href={`/post/${p.id}`} className="j13-rank group" data-tip={p.title}>
                 <span className="j13-rank-no">{i + 1}</span>
                 <span className="min-w-0 flex-1">
                   <span
@@ -200,7 +200,7 @@ function NewUsers({ users }: { users: NewUser[] }) {
                 <span
                   className="w-full truncate text-center text-[11px]"
                   style={{ color: "var(--ink-2)" }}
-                  title={name}
+                  data-tip={name}
                 >
                   {name}
                 </span>
@@ -232,7 +232,7 @@ function ActiveUsers({ users }: { users: ActiveUser[] }) {
             const name = u.nickname || u.username;
             return (
               <li key={u.id}>
-                <Link href={`/u/${u.id}`} className="j13-raillink" title={name}>
+                <Link href={`/u/${u.id}`} className="j13-raillink" data-tip={name}>
                   <Avatar name={name} src={u.avatar} size={30} />
                   <span className="flex-1 min-w-0">
                     <span
@@ -294,7 +294,7 @@ function FriendLinks() {
               {l.name}
             </a>
           ) : (
-            <span key={l.name} className="j13-chip" title="友链待配置">
+            <span key={l.name} className="j13-chip" data-tip="友链待配置">
               {l.name}
             </span>
           )