fix: add visually hidden status code headings for .md export hierarchy

The .md export was mixing content from different response codes (200, 400)
together because tab UI doesn't translate to markdown hierarchy. Add sr-only
h3 headings per status code so the llms-txt plugin produces proper nesting.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: B4nan

patches/docusaurus-theme-openapi-docs+4.7.1.patch

@@ -481,3 +481,41 @@ index 37190c6..76766ef 100644
        });
      }
      return react_1.default.createElement(SchemaItem_1.default, {
+diff --git a/node_modules/docusaurus-theme-openapi-docs/lib/theme/StatusCodes/index.js b/node_modules/docusaurus-theme-openapi-docs/lib/theme/StatusCodes/index.js
+index a0b2d76..ab3e87f 100644
+--- a/node_modules/docusaurus-theme-openapi-docs/lib/theme/StatusCodes/index.js
++++ b/node_modules/docusaurus-theme-openapi-docs/lib/theme/StatusCodes/index.js
+@@ -14,6 +14,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
+ const react_1 = __importDefault(require("react"));
+ const Translate_1 = require("@docusaurus/Translate");
+ const ApiTabs_1 = __importDefault(require("@theme/ApiTabs"));
++const Heading_1 = __importDefault(require("@theme/Heading"));
+ const Details_1 = __importDefault(require("@theme/Details"));
+ const Markdown_1 = __importDefault(require("@theme/Markdown"));
+ const ResponseHeaders_1 = __importDefault(require("@theme/ResponseHeaders"));
+@@ -35,6 +36,25 @@ const StatusCodes = ({ label, id, responses }) => {
+         react_1.default.createElement(
+           TabItem_1.default,
+           { key: code, label: code, value: code },
++          // Apify: Visually hidden heading for llms-txt .md export
++          react_1.default.createElement(
++            Heading_1.default,
++            {
++              as: "h3",
++              style: {
++                position: 'absolute',
++                width: '1px',
++                height: '1px',
++                padding: 0,
++                margin: '-1px',
++                overflow: 'hidden',
++                clip: 'rect(0, 0, 0, 0)',
++                whiteSpace: 'nowrap',
++                borderWidth: 0,
++              }
++            },
++            `Status ${code}`
++          ),
+           react_1.default.createElement(
+             "div",
+             null,