fix: use docsify routes config for .pine files to prevent 404

Replace beforeEach hook with docsify's routes config that intercepts
.pine URL patterns before docsify attempts to fetch them as .md files.
The route handler fetches the actual .pine file and wraps it in a
markdown code fence, giving each .pine file a unique URL hash.

index.html

@@ -220,6 +220,25 @@
       alias: {
         '/.*/_sidebar.md': '/_sidebar.md',
       },
+      // Route handler for .pine files — fetch and wrap in markdown code fence
+      routes: {
+        '/(.+\\.pine)': function(route, matched, next) {
+          var pinePath = matched;
+          var absUrl = new URL(pinePath, document.baseURI).href;
+          fetch(absUrl).then(function(r) {
+            if (!r.ok) throw new Error(r.status);
+            return r.text();
+          }).then(function(text) {
+            if (text.trimStart().startsWith('<!DOCTYPE') || text.trimStart().startsWith('<html')) {
+              throw new Error('Server returned HTML instead of .pine file');
+            }
+            var fname = pinePath.split('/').pop();
+            next('# 📜 ' + fname + '\n\n```pine\n' + text + '\n```\n');
+          }).catch(function(err) {
+            next('# Error\n\nCould not load `' + pinePath + '`: ' + err.message);
+          });
+        },
+      },
       plugins: [
         function(hook) {
           hook.doneEach(function() {
@@ -236,20 +255,6 @@
             }, 100);
           });
         },
-        // Render .pine files as syntax-highlighted code blocks with their own URL
-        function(hook, vm) {
-          hook.beforeEach(function(content, next) {
-            var routeFile = (vm.route && vm.route.file) || '';
-            if (routeFile.endsWith('.pine')) {
-              var fname = routeFile.split('/').pop();
-              // Wrap raw pine content in markdown code fence
-              var md = '# 📜 ' + fname + '\n\n```pine\n' + content + '\n```\n';
-              next(md);
-            } else {
-              next(content);
-            }
-          });
-        }
       ],
     }
   </script>