fix: resolve GSC 404 errors with trailing-slash redirects and moved-page redirects

Add createRedirects to generate trailing-slash redirect pages for GitHub
Pages compatibility. Add explicit redirects for /docs/Features/recent-files
and /docs/Features/live-preview-settings. Fix 5 trailing-slash targets in
app-links.js.

Author: charlypa

app-links.js

@@ -90,27 +90,27 @@ export const appLinks = [
 	},
     {
 		from: '/app-links/auto-space-detection',
-		to: '/docs/editing-text/#auto-space-detection',
+		to: '/docs/editing-text#auto-space-detection',
 	},
     {
 		from: '/app-links/html-lint',
-		to: '/docs/Features/Problems Panel/html-lint/',
+		to: '/docs/Features/Problems Panel/html-lint',
 	},
     {
 		from: '/app-links/ESLint',
-		to: '/docs/Features/Problems Panel/ESLint/',
+		to: '/docs/Features/Problems Panel/ESLint',
 	},
     {
 		from: '/app-links/live-preview-settings',
 		to: '/docs/Features/Live Preview/live-preview-settings',
 	},
     {
 		from: '/app-links/editor-rulers',
-		to: '/docs/Features/editor-rulers/',
+		to: '/docs/Features/editor-rulers',
 	},
     {
 		from: '/app-links/find-in-files',
-		to: '/docs/Features/find-in-files/',
+		to: '/docs/Features/find-in-files',
 	},
     {
 		from: '/app-links/custom-snippets',

docusaurus.config.js

@@ -157,7 +157,17 @@ const config = {
 		[
 			"@docusaurus/plugin-client-redirects",
 			{
-				redirects: appLinks,
+				redirects: [
+					...appLinks,
+					{ from: '/docs/Features/recent-files', to: '/docs/file-management#recent-files' },
+					{ from: '/docs/Features/live-preview-settings', to: '/docs/Features/Live Preview/live-preview-settings' },
+				],
+				createRedirects(existingPath) {
+					if (existingPath !== '/') {
+						return [existingPath + '/'];
+					}
+					return [];
+				},
 			}
 		]
 	],