Preserve transaction status when editing instead of resetting to Uncleared

Adds a Status select to the add/edit transaction dialog that defaults to
the current value when editing, so cleared transactions stay cleared.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/views/transactions/TransactionsView.vue

@@ -126,6 +126,7 @@
           />
           <v-text-field v-model="txnForm.memo" label="Memo" />
           <v-text-field v-model="txnForm.checkNumber" label="Check #" />
+          <v-select v-model="txnForm.status" label="Status" :items="['Uncleared','Cleared','Reconciled']" />
 
           <v-switch v-model="useSplits" label="Split across categories" color="primary" class="mt-2" />
 
@@ -290,7 +291,8 @@ const txnForm = ref({
   payeeName: '',
   categoryId: null as string | null,
   memo: '',
-  checkNumber: ''
+  checkNumber: '',
+  status: 'Uncleared'
 })
 
 const transferForm = ref({ fromAccountId: '', toAccountId: '', date: new Date().toISOString().split('T')[0], amount: 0, memo: '' })
@@ -383,7 +385,8 @@ function openAddDialog() {
     payeeName: '',
     categoryId: null,
     memo: '',
-    checkNumber: ''
+    checkNumber: '',
+    status: 'Uncleared'
   }
   useSplits.value = false
   splits.value = []
@@ -401,7 +404,8 @@ function editTransaction(txn: Transaction) {
     payeeName: txn.payeeName || '',
     categoryId: txn.categoryId,
     memo: txn.memo || '',
-    checkNumber: txn.checkNumber || ''
+    checkNumber: txn.checkNumber || '',
+    status: txn.status || 'Uncleared'
   }
   if (txn.splits && txn.splits.length > 1) {
     useSplits.value = true
@@ -426,7 +430,7 @@ async function saveTxn() {
   const payload: any = {
     ...txnForm.value,
     amount,
-    status: 'Uncleared',
+    status: txnForm.value.status,
     splits: null
   }