fix: update version number to 1.0.6RC01 and clarify verification code description

backend/config/version.py

@@ -2,7 +2,7 @@
 # file: config/version.py
 import os
 
-BASE_VERSION = "1.0.5"  # update manually when releasing features
+BASE_VERSION = "1.0.6RC01"  # update manually when releasing features
 
 def get_full_version() -> str:
     """

frontend/vue-app/src/components/auth/ParentPinSetup.vue

@@ -15,8 +15,8 @@
     <div v-else-if="step === 2">
       <h2>Enter Verification Code</h2>
       <p>
-        We've sent a 6-digit code to your email. Enter it below to continue. The code is valid for
-        10 minutes.
+        We've sent a 6-character code to your email. Enter it below to continue. The code is valid
+        for 10 minutes.
       </p>
       <input
         v-model="code"