feat(player): 完善 H5 投注端与 API 演示数据

- 球赛/串关/优胜冠军、赛事详情、历史投注与个人资料编辑
- 固定顶栏、公告与底栏，仅内容区滚动
- 底部导航与站点 favicon 使用 logo，登录页精简
- API 种子、冠军盘与历史注单增强

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

uploads/banners/hot-matches.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 750 280" fill="none">
+  <defs>
+    <linearGradient id="bg3" x1="750" y1="0" x2="0" y2="280" gradientUnits="userSpaceOnUse">
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+  <text x="40" y="95" font-family="Arial, sans-serif" font-size="36" font-weight="800" fill="#D4AF37">热门赛事</text>
+  <text x="40" y="150" font-family="Arial, sans-serif" font-size="24" font-weight="700" fill="#FFFFFF">五大联赛 · 天天有球</text>
+  <text x="40" y="195" font-family="Arial, sans-serif" font-size="18" fill="#8E8E93">独赢 · 让球 · 大小 · 串关</text>
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+</svg>

uploads/banners/promo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 750 280" fill="none">
+  <defs>
+    <linearGradient id="bg2" x1="0" y1="0" x2="750" y2="280" gradientUnits="userSpaceOnUse">
+      <stop stop-color="#0A0A0A"/>
+      <stop offset="0.5" stop-color="#1A1208"/>
+      <stop offset="1" stop-color="#000"/>
+    </linearGradient>
+    <linearGradient id="gold2" x1="0" y1="0" x2="1" y2="0">
+      <stop stop-color="#F0D875"/>
+      <stop offset="1" stop-color="#D4AF37"/>
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+  <text x="40" y="100" font-family="Arial, sans-serif" font-size="38" font-weight="800" fill="url(#gold2)">首存礼遇</text>
+  <text x="40" y="155" font-family="Arial, sans-serif" font-size="22" fill="#F5F5F7">新会员专属 · 限时开放</text>
+  <text x="40" y="200" font-family="Arial, sans-serif" font-size="18" fill="#8E8E93">立即登录参与热门赛事</text>
+</svg>

uploads/banners/welcome.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 750 280" fill="none">
+  <defs>
+    <linearGradient id="bg" x1="0" y1="0" x2="750" y2="280" gradientUnits="userSpaceOnUse">
+      <stop stop-color="#1A1A1A"/>
+      <stop offset="0.5" stop-color="#252015"/>
+      <stop offset="1" stop-color="#000000"/>
+    </linearGradient>
+    <linearGradient id="gold" x1="0" y1="0" x2="1" y2="1">
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+  <text x="40" y="110" font-family="Arial, sans-serif" font-size="42" font-weight="800" fill="url(#gold)">TheBet365</text>
+  <text x="40" y="160" font-family="Arial, sans-serif" font-size="22" fill="#8E8E93">足球赛事火热进行中</text>
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+</svg>