Update post index, rss feed, 404 page

src/pnpm-lock.yaml

@@ -23,6 +23,9 @@ importers:
       lucide-react:
         specifier: ^0.468.0
         version: 0.468.0(react@18.3.1)
+      marked:
+        specifier: ^15.0.6
+        version: 15.0.6
       react:
         specifier: ^18.3.1
         version: 18.3.1
@@ -1353,6 +1356,11 @@ packages:
   markdown-table@3.0.4:
     resolution: {integrity: sha512-wiYz4+JrLyb/DqW2hkFJxP7Vd7JuTDm77fvbM8VfEQdmSMqcImWeeRbHwZjBjIFki/VaMK2BhFi7oUUZeM5bqw==}
 
+  marked@15.0.6:
+    resolution: {integrity: sha512-Y07CUOE+HQXbVDCGl3LXggqJDbXDP2pArc2C1N1RRMN0ONiShoSsIInMd5Gsxupe7fKLpgimTV+HOJ9r7bA+pg==}
+    engines: {node: '>= 18'}
+    hasBin: true
+
   matchmediaquery@0.4.2:
     resolution: {integrity: sha512-wrZpoT50ehYOudhDjt/YvUJc6eUzcdFPdmbizfgvswCKNHD1/OBOHYJpHie+HXpu6bSkEGieFMYk6VuutaiRfA==}
 
@@ -3717,6 +3725,8 @@ snapshots:
 
   markdown-table@3.0.4: {}
 
+  marked@15.0.6: {}
+
   matchmediaquery@0.4.2:
     dependencies:
       css-mediaquery: 0.1.2