feat: add basic impl

pnpm-lock.yaml

@@ -33,12 +33,24 @@ importers:
         specifier: ^8.35.0
         version: 8.35.0(eslint@9.29.0)(typescript@5.8.3)
 
-  pkgs/client:
+  pkgs/server:
     dependencies:
+      '@pow-captcha/shared':
+        specifier: workspace:*
+        version: link:../shared
       '@pow-captcha/solver':
         specifier: workspace:*
         version: link:../solver
 
+  pkgs/shared:
+    dependencies:
+      base64-js:
+        specifier: ^1.5.1
+        version: 1.5.1
+      zod:
+        specifier: ^3.25.67
+        version: 3.25.67
+
   pkgs/solver: {}
 
 packages:
@@ -208,6 +220,9 @@ packages:
   balanced-match@1.0.2:
     resolution: {integrity: sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==}
 
+  base64-js@1.5.1:
+    resolution: {integrity: sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==}
+
   brace-expansion@1.1.12:
     resolution: {integrity: sha512-9T9UjW3r0UW5c1Q7GTwllptXwhvYmEzFhzMfZ9H7FQWt+uZePjZPjBP/W1ZEyZ1twGWom5/56TF4lPcqjnDHcg==}
 
@@ -590,6 +605,9 @@ packages:
     resolution: {integrity: sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==}
     engines: {node: '>=10'}
 
+  zod@3.25.67:
+    resolution: {integrity: sha512-idA2YXwpCdqUSKRCACDE6ItZD9TZzy3OZMtpfLoh6oPR47lipysRrJfjzMqFxQ3uJuUPyUeWe1r9vLH33xO/Qw==}
+
 snapshots:
 
   '@eslint-community/eslint-utils@4.7.0(eslint@9.29.0)':
@@ -786,6 +804,8 @@ snapshots:
 
   balanced-match@1.0.2: {}
 
+  base64-js@1.5.1: {}
+
   brace-expansion@1.1.12:
     dependencies:
       balanced-match: 1.0.2
@@ -1135,3 +1155,5 @@ snapshots:
   word-wrap@1.2.5: {}
 
   yocto-queue@0.1.0: {}
+
+  zod@3.25.67: {}