feat(creator-studio): pay toggle and entry in the publish settings card

The card below the writing surface only offered cover and scheduling, so
paid content could only be reached through the bottom bar's 发布 button.

- The card gains a 付费内容 row (rendered only with canPay): a toggle bound
  to draft.pay.enabled, a status line that reflects whether resources were
  added, and a 配置价格与付费资源 link.
- Turning the toggle on opens the publish drawer and scrolls it to the pay
  section, so pricing is the next thing the author sees. Entering from the
  bottom bar keeps the drawer at the top.

assets/creator-studio/build/index.css

@@ -1 +1 @@
-.jio-page-submit{background:#f6f6f6}body.jio-page-submit.has-static-nav,body.jio-page-submit.nav-fixed{padding-top:0!important}.jio-page-submit .float-btn,.jio-page-submit .footer,.jio-page-submit .footer-tabbar,.jio-page-submit .header,.jio-page-submit .jio-float-buttons{display:none!important}.jio-page-submit #main-content.container{max-width:none;padding:0}#jio-creator-studio.is-ready{display:block}.jio-creator{--jc-ink:#2b2b2b;--jc-ink-soft:#7d8683;--jc-paper:#f6f6f6;--jc-line:#e6e9e8;--jc-accent:#267665;--jc-accent-strong:#1d5f52;--jc-warn:#b4573f;--jc-top:112px;--jc-status:52px;-webkit-font-smoothing:antialiased;background:var(--jc-paper);color:var(--jc-ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;min-height:100vh;min-height:100dvh;padding-bottom:var(--jc-status);padding-top:var(--jc-top)}.jio-creator *,.jio-creator :after,.jio-creator :before{box-sizing:border-box}.jio-creator button{color:inherit;font:inherit}.jio-creator__top{background:rgba(250,251,250,.98);box-shadow:0 2px 8px rgba(27,46,39,.035);left:0;position:fixed;right:0;top:0;z-index:300}.jio-creator__masthead{align-items:center;display:flex;gap:16px;height:56px;justify-content:space-between;padding:0 clamp(14px,2.4vw,30px)}.jio-creator__masthead-left{align-items:center;display:flex;gap:10px;min-width:0}.jio-creator__back{align-items:center;border-radius:7px;color:var(--jc-ink-soft);display:inline-flex;flex:0 0 auto;height:30px;justify-content:center;text-decoration:none;width:30px}.jio-creator__back:focus-visible,.jio-creator__back:hover{background:#edf3f0;color:var(--jc-accent);outline:0}.jio-creator__brand{align-items:center;color:inherit;display:inline-flex;min-width:0;text-decoration:none}.jio-creator__brand:focus-visible{outline:2px solid rgba(38,118,101,.35);outline-offset:4px}.jio-creator__brand-logo{display:block;height:30px;max-width:168px;-o-object-fit:contain;object-fit:contain;width:auto}.jio-creator__brand-text{color:var(--jc-accent-strong);font-family:Songti SC,"Noto Serif SC","Source Han Serif SC",serif;font-size:17px;font-weight:700;letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.jio-creator__me{align-items:center;border-radius:50%;display:inline-flex;flex:0 0 auto;justify-content:center}.jio-creator__me:focus-visible{outline:2px solid rgba(38,118,101,.5);outline-offset:2px}.jio-creator__me-avatar{background:#eef1f0;border:1px solid rgba(24,39,34,.08);border-radius:50%;display:block;height:32px;-o-object-fit:cover;object-fit:cover;overflow:hidden;width:32px}.jio-creator__me-avatar.is-placeholder{align-items:center;color:#9aa2a0;display:inline-flex;font-size:13px;justify-content:center}.jio-creator__bar{align-items:center;border-bottom:1px solid var(--jc-line);border-top:1px solid var(--jc-line);display:flex;height:56px;justify-content:center;justify-content:safe center;padding:0 clamp(14px,2.4vw,30px)}.jio-creator__toolbar-tools{align-items:center;display:flex;gap:7px;max-width:100%;min-width:0;overflow-x:auto;scrollbar-width:none}.jio-creator__toolbar-tools::-webkit-scrollbar{display:none}.jio-creator__toolbar-group{align-items:center;display:inline-flex;flex:0 0 auto;gap:2px}.jio-creator__toolbar-divider{background:var(--jc-line);flex:0 0 auto;height:22px;width:1px}.jio-creator__tool-btn{align-items:center;background:transparent;border:0;border-radius:6px;color:#5f6664;cursor:pointer;display:inline-flex;flex:0 0 auto;flex-direction:column;font-size:11px;gap:2px;height:46px;justify-content:center;line-height:1.2;min-width:40px;padding:5px 6px;width:auto}.jio-creator__tool-btn i{font-size:14px;line-height:1}.jio-creator__tool-btn:focus-visible:not(:disabled),.jio-creator__tool-btn:hover:not(:disabled){background:#f0f2f1;color:var(--jc-accent-strong);outline:0}.jio-creator__tool-btn.is-active:not(:disabled),.jio-creator__tool-btn.is-open:not(:disabled){background:#e9f1ee;color:var(--jc-accent-strong)}.jio-creator__tool-btn:disabled{color:#c7d0cc;cursor:default}.jio-creator__tool-label{max-width:52px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.jio-creator__tool-caret{bottom:4px;color:#b0b9b6;font-size:8px;line-height:1;position:absolute;right:3px}.jio-creator__tool-menu{display:inline-flex;flex:0 0 auto;position:relative}.jio-creator__tool-menu .jio-creator__tool-btn{position:relative}.jio-creator__menu{animation:jio-menu-in .12s ease-out;background:#fff;border:1px solid rgba(24,39,34,.06);border-radius:12px;box-shadow:0 14px 40px rgba(20,32,28,.16),0 2px 6px rgba(20,32,28,.06);display:flex;flex-direction:column;gap:2px;padding:6px;position:fixed;z-index:620}.jio-creator__menu.is-top{animation-name:jio-menu-in-up}@keyframes jio-menu-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes jio-menu-in-up{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.jio-creator__menu-item{align-items:center;background:transparent;border:0;border-radius:7px;color:#4Line truncated
+.jio-page-submit{background:#f6f6f6}body.jio-page-submit.has-static-nav,body.jio-page-submit.nav-fixed{padding-top:0!important}.jio-page-submit .float-btn,.jio-page-submit .footer,.jio-page-submit .footer-tabbar,.jio-page-submit .header,.jio-page-submit .jio-float-buttons{display:none!important}.jio-page-submit #main-content.container{max-width:none;padding:0}#jio-creator-studio.is-ready{display:block}.jio-creator{--jc-ink:#2b2b2b;--jc-ink-soft:#7d8683;--jc-paper:#f6f6f6;--jc-line:#e6e9e8;--jc-accent:#267665;--jc-accent-strong:#1d5f52;--jc-warn:#b4573f;--jc-top:112px;--jc-status:52px;-webkit-font-smoothing:antialiased;background:var(--jc-paper);color:var(--jc-ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;min-height:100vh;min-height:100dvh;padding-bottom:var(--jc-status);padding-top:var(--jc-top)}.jio-creator *,.jio-creator :after,.jio-creator :before{box-sizing:border-box}.jio-creator button{color:inherit;font:inherit}.jio-creator__top{background:rgba(250,251,250,.98);box-shadow:0 2px 8px rgba(27,46,39,.035);left:0;position:fixed;right:0;top:0;z-index:300}.jio-creator__masthead{align-items:center;display:flex;gap:16px;height:56px;justify-content:space-between;padding:0 clamp(14px,2.4vw,30px)}.jio-creator__masthead-left{align-items:center;display:flex;gap:10px;min-width:0}.jio-creator__back{align-items:center;border-radius:7px;color:var(--jc-ink-soft);display:inline-flex;flex:0 0 auto;height:30px;justify-content:center;text-decoration:none;width:30px}.jio-creator__back:focus-visible,.jio-creator__back:hover{background:#edf3f0;color:var(--jc-accent);outline:0}.jio-creator__brand{align-items:center;color:inherit;display:inline-flex;min-width:0;text-decoration:none}.jio-creator__brand:focus-visible{outline:2px solid rgba(38,118,101,.35);outline-offset:4px}.jio-creator__brand-logo{display:block;height:30px;max-width:168px;-o-object-fit:contain;object-fit:contain;width:auto}.jio-creator__brand-text{color:var(--jc-accent-strong);font-family:Songti SC,"Noto Serif SC","Source Han Serif SC",serif;font-size:17px;font-weight:700;letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.jio-creator__me{align-items:center;border-radius:50%;display:inline-flex;flex:0 0 auto;justify-content:center}.jio-creator__me:focus-visible{outline:2px solid rgba(38,118,101,.5);outline-offset:2px}.jio-creator__me-avatar{background:#eef1f0;border:1px solid rgba(24,39,34,.08);border-radius:50%;display:block;height:32px;-o-object-fit:cover;object-fit:cover;overflow:hidden;width:32px}.jio-creator__me-avatar.is-placeholder{align-items:center;color:#9aa2a0;display:inline-flex;font-size:13px;justify-content:center}.jio-creator__bar{align-items:center;border-bottom:1px solid var(--jc-line);border-top:1px solid var(--jc-line);display:flex;height:56px;justify-content:center;justify-content:safe center;padding:0 clamp(14px,2.4vw,30px)}.jio-creator__toolbar-tools{align-items:center;display:flex;gap:7px;max-width:100%;min-width:0;overflow-x:auto;scrollbar-width:none}.jio-creator__toolbar-tools::-webkit-scrollbar{display:none}.jio-creator__toolbar-group{align-items:center;display:inline-flex;flex:0 0 auto;gap:2px}.jio-creator__toolbar-divider{background:var(--jc-line);flex:0 0 auto;height:22px;width:1px}.jio-creator__tool-btn{align-items:center;background:transparent;border:0;border-radius:6px;color:#5f6664;cursor:pointer;display:inline-flex;flex:0 0 auto;flex-direction:column;font-size:11px;gap:2px;height:46px;justify-content:center;line-height:1.2;min-width:40px;padding:5px 6px;width:auto}.jio-creator__tool-btn i{font-size:14px;line-height:1}.jio-creator__tool-btn:focus-visible:not(:disabled),.jio-creator__tool-btn:hover:not(:disabled){background:#f0f2f1;color:var(--jc-accent-strong);outline:0}.jio-creator__tool-btn.is-active:not(:disabled),.jio-creator__tool-btn.is-open:not(:disabled){background:#e9f1ee;color:var(--jc-accent-strong)}.jio-creator__tool-btn:disabled{color:#c7d0cc;cursor:default}.jio-creator__tool-label{max-width:52px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.jio-creator__tool-caret{bottom:4px;color:#b0b9b6;font-size:8px;line-height:1;position:absolute;right:3px}.jio-creator__tool-menu{display:inline-flex;flex:0 0 auto;position:relative}.jio-creator__tool-menu .jio-creator__tool-btn{position:relative}.jio-creator__menu{animation:jio-menu-in .12s ease-out;background:#fff;border:1px solid rgba(24,39,34,.06);border-radius:12px;box-shadow:0 14px 40px rgba(20,32,28,.16),0 2px 6px rgba(20,32,28,.06);display:flex;flex-direction:column;gap:2px;padding:6px;position:fixed;z-index:620}.jio-creator__menu.is-top{animation-name:jio-menu-in-up}@keyframes jio-menu-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes jio-menu-in-up{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.jio-creator__menu-item{align-items:center;background:transparent;border:0;border-radius:7px;color:#4Line truncated