Revert "feat: migrate frontend to Astro SSG with design system"

This reverts commit 8ad888da28.

pnpm-lock.yaml

@@ -267,9 +267,6 @@ importers:
       tailwind-merge:
         specifier: ^3.6.0
         version: 3.6.0
-      zustand:
-        specifier: ^5.0.14
-        version: 5.0.14(@types/react@19.2.14)(react@19.2.6)
     devDependencies:
       '@biomejs/biome':
         specifier: latest
@@ -6050,24 +6047,6 @@ packages:
   zod@4.4.3:
     resolution: {integrity: sha512-ytENFjIJFl2UwYglde2jchW2Hwm4GJFLDiSXWdTrJQBIN9Fcyp7n4DhxJEiWNAJMV1/BqWfW/kkg71UDcHJyTQ==}
 
-  zustand@5.0.14:
-    resolution: {integrity: sha512-/8tAspM5LMPr28b3fwLYrtdj77ECpfZviaP75CMTnwO8ISyaE4GDIG/9rDDYq/cH9D2Xw2A2RXglLInmVBQB/g==}
-    engines: {node: '>=12.20.0'}
-    peerDependencies:
-      '@types/react': '>=18.0.0'
-      immer: '>=9.0.6'
-      react: '>=18.0.0'
-      use-sync-external-store: '>=1.2.0'
-    peerDependenciesMeta:
-      '@types/react':
-        optional: true
-      immer:
-        optional: true
-      react:
-        optional: true
-      use-sync-external-store:
-        optional: true
-
   zwitch@2.0.4:
     resolution: {integrity: sha512-bXE4cR/kVZhKZX/RjPEflHaKVhUVl85noU3v6b8apfQEc1x4A+zBxjZ4lN8LqGd6WZ3dl98pY4o717VFmoPp+A==}
 
@@ -11535,9 +11514,4 @@ snapshots:
 
   zod@4.4.3: {}
 
-  zustand@5.0.14(@types/react@19.2.14)(react@19.2.6):
-    optionalDependencies:
-      '@types/react': 19.2.14
-      react: 19.2.6
-
   zwitch@2.0.4: {}