refactor(creator-studio): move taxonomy to the settings card, slim the drawer to pay

Classification belongs next to everything else the author decides before
publishing, and the drawer should only configure paid resources.

- PublishSettings now renders categories, tags and custom taxonomy
  dimensions first, then cover, paid content and scheduling. Chips use a
  stacked row layout so long category lists wrap naturally.
- PublishDrawer keeps only PayPanel: taxonomy, save/publish buttons and the
  now-unused props are gone, leaving a single 完成 button.
- New PublishDialog takes over the publish action from the bottom bar, and
  with it the captcha mount point, so the gate still renders somewhere the
  author can see it.
- Promotes .jio-creator-primary / .jio-creator-ghost out of the dialog-only
  rules (drawer and pay panel buttons had no styling), and drops the dead
  .jio-creator-field / .jio-creator-cover blocks.

Contracts updated; 886 widget-system tests pass.

tests/widget-system/creator-studio-contract.test.cjs

@@ -146,8 +146,12 @@ test('studio app uses TinyMCE while preserving autosave, recovery, and publishin
 	assert.match(drawer, /canPayDownload/);
 	assert.match(drawer, /<PayPanel/);
 	assert.match(read('assets/creator-studio/src/panels/pay-panel.tsx'), /私有附件存储尚未配置/);
-	assert.match(drawer, /onSubmit\(false\)/);
-	assert.match(drawer, /立即发布/);
+	// 发布动作在底部状态栏 + 确认弹窗里，抽屉只做付费配置。
+	assert.doesNotMatch(drawer, /onSubmit\(/);
+	assert.doesNotMatch(drawer, /立即发布/);
+	assert.doesNotMatch(drawer, /保存草稿/);
+	assert.match(read('assets/creator-studio/src/components/publish-dialog.tsx'), /onSubmit\(false\)/);
+	assert.match(read('assets/creator-studio/src/components/publish-dialog.tsx'), /立即发布/);
 });
 
 test('studio enqueues the WordPress editor and TinyMCE media tools', () => {
@@ -436,8 +440,21 @@ test('writing surface is a centered paper card with a publish settings card belo
 	assert.match(settings, /onOpenPaySettings/);
 	assert.match(settings, /配置价格与付费资源/);
 	assert.match(appSource, /onOpenPaySettings=\{/);
-	assert.match(appSource, /focusPay=\{drawerFocusPay\}/);
-	assert.match(read('assets/creator-studio/src/panels/publish-drawer.tsx'), /scrollIntoView/);
+
+	// 分类与标签已从抽屉移到发布设置卡片。
+	assert.match(settings, /__\('分类', 'jio'\)/);
+	assert.match(settings, /__\('标签', 'jio'\)/);
+	assert.match(settings, /onCategoriesChange/);
+	assert.match(settings, /onTagsChange/);
+	assert.match(settings, /onCustomChange/);
+	assert.match(appSource, /onCategoriesChange=\{/);
+	assert.match(appSource, /onTagsChange=\{/);
+	assert.doesNotMatch(read('assets/creator-studio/src/panels/publish-drawer.tsx'), /taxonomy/);
+
+	// 发布动作从抽屉移到确认弹窗，人机验证挂载点随之迁移。
+	assert.match(appSource, /<PublishDialog/);
+	assert.match(read('assets/creator-studio/src/components/publish-dialog.tsx'), /jio-creator-captcha/);
+	assert.doesNotMatch(drawer, /jio-creator-captcha/);
 });
 
 test('scheduled publishing is validated and applied server side', () => {