fix: Update password reset form to accept 8-character alphanumeric codes

Critical fix for password reset flow. The frontend form was still configured
for 6-digit numeric codes while the backend was updated to use 8-character
alphanumeric codes.

Changes:
- Updated maxlength from 6 to 8 characters
- Changed pattern from [0-9]{6} to [0-9A-Za-z]{8}
- Updated placeholder from "000000" to "ABC123XY"
- Changed label from "6-Digit Code" to "Reset Code"
- Updated help text to say "8-character code"
- Added uppercase styling for better UX
- Changed button validation from code.length !== 6 to !== 8

This ensures users can enter the full reset code sent via email.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

pages/forgot-password.vue

@@ -46,19 +46,20 @@
           <form v-if="step === 2" @submit.prevent="verifyCode" class="space-y-6">
             <div>
               <label for="code" class="block text-sm font-medium text-gray-700">
-                6-Digit Code
+                Reset Code
               </label>
               <input
                 id="code"
                 v-model="code"
                 type="text"
                 required
-                maxlength="6"
-                pattern="[0-9]{6}"
-                placeholder="000000"
-                class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500 text-center text-2xl tracking-widest"
+                maxlength="8"
+                pattern="[0-9A-Za-z]{8}"
+                placeholder="ABC123XY"
+                class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-blue-500 focus:border-blue-500 text-center text-2xl tracking-wider uppercase"
+                style="text-transform: uppercase"
               />
-              <p class="mt-2 text-xs text-gray-500">Enter the 6-digit code sent to {{ email }}</p>
+              <p class="mt-2 text-xs text-gray-500">Enter the 8-character code sent to {{ email }}</p>
             </div>
 
             <div v-if="error" class="text-red-600 text-sm">
@@ -67,7 +68,7 @@
 
             <button
               type="submit"
-              :disabled="loading || code.length !== 6"
+              :disabled="loading || code.length !== 8"
               class="w-full flex justify-center py-2 px-4 border border-transparent rounded-md shadow-sm text-sm font-medium text-white bg-blue-600 hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500 disabled:opacity-50"
             >
               {{ loading ? 'Verifying...' : 'Verify Code' }}