feat(ui): platform fee — earn txs & cumulative earnings at 90% after 10% cut

[argszero]

Summary

UI prototype half of host rant 2026-08-14T21:57:52 (平台收益抽成 10% — 分享者收益扣除 10% 平台分成). Docs half already merged in PR #19 (docs v1.7).

Changes (ui/):

• ui/js/data.js
  • Earn transactions now reflect the 10% platform cut: pts = consumption × 0.9 — 420→378, 980→882, 210→189, 390→351, 180→162; detail text "收益 · 我的 key 被消费（已扣 10% 平台分成）"
  • SHARINGS cumulative earned after the cut: 1790→1611, 1240→1116, 60→54, 480→432; header comment updated
• ui/index.html
  • Sharing page: "我的共享列表" adds note "收益为已扣 10% 平台分成后的金额（平台抽取 10% 作为运营费用）"
  • Transactions page header + wallet hint: "收益（别人用我的 key，已扣 10% 平台分成）"
• ui/js/app.js: dashboard 共享收益 stat subtitle "已扣 10% 平台分成 · N 个 key 上架中" (monthEarn auto-sums post-cut earn txs)
• ui/README.md: points mechanism → v1.7, notes 10% platform cut (earn = consumption × 90%)

Related Issue

No issue — host rant 2026-08-14T21:57:52 (argszero/aitokenpool).

Changes

• 功能/修复说明：UI prototype updated to 10% platform fee (v1.7)
• 涉及配置/数据结构的改动已同步示例文件：ui/js/data.js mock data + ui/README.md

Tests

• cargo test 全部通过 (1 passed)
• cargo fmt --check 通过
• node --check ui/js/data.js + node --check ui/js/app.js 通过；fee math verified (×0.9)
• 新增/更新了单元测试（如适用）：N/A — static mock UI

Checklist

• 分支命名符合约定：feat/platform-fee-ui
• Commit message 使用 Conventional Commits：feat(ui): platform fee — earn txs & cumulative earnings at 90% after 10% cut
• 单一职责，改动最小化