Adds per-user wallet configuration

Allows users to configure their own wallet ID, enabling
the system to track expenses and receivables on a per-user basis.

Introduces new database table, models, API endpoints, and UI elements
to manage user-specific wallet settings.

static/js/index.js

@@ -12,9 +12,11 @@ window.app = Vue.createApp({
       accounts: [],
       currencies: [],
       settings: null,
+      userWalletSettings: null,
       isAdmin: false,
       isSuperUser: false,
       castleWalletConfigured: false,
+      userWalletConfigured: false,
       expenseDialog: {
         show: false,
         description: '',
@@ -34,6 +36,11 @@ window.app = Vue.createApp({
         show: false,
         castleWalletId: '',
         loading: false
+      },
+      userWalletDialog: {
+        show: false,
+        userWalletId: '',
+        loading: false
       }
     }
   },
@@ -123,10 +130,27 @@ window.app = Vue.createApp({
         this.castleWalletConfigured = false
       }
     },
+    async loadUserWallet() {
+      try {
+        const response = await LNbits.api.request(
+          'GET',
+          '/castle/api/v1/user/wallet',
+          this.g.user.wallets[0].inkey
+        )
+        this.userWalletSettings = response.data
+        this.userWalletConfigured = !!(this.userWalletSettings && this.userWalletSettings.user_wallet_id)
+      } catch (error) {
+        this.userWalletConfigured = false
+      }
+    },
     showSettingsDialog() {
       this.settingsDialog.castleWalletId = this.settings?.castle_wallet_id || ''
       this.settingsDialog.show = true
     },
+    showUserWalletDialog() {
+      this.userWalletDialog.userWalletId = this.userWalletSettings?.user_wallet_id || ''
+      this.userWalletDialog.show = true
+    },
     async submitSettings() {
       if (!this.settingsDialog.castleWalletId) {
         this.$q.notify({
@@ -158,6 +182,37 @@ window.app = Vue.createApp({
         this.settingsDialog.loading = false
       }
     },
+    async submitUserWallet() {
+      if (!this.userWalletDialog.userWalletId) {
+        this.$q.notify({
+          type: 'warning',
+          message: 'Wallet ID is required'
+        })
+        return
+      }
+
+      this.userWalletDialog.loading = true
+      try {
+        await LNbits.api.request(
+          'PUT',
+          '/castle/api/v1/user/wallet',
+          this.g.user.wallets[0].inkey,
+          {
+            user_wallet_id: this.userWalletDialog.userWalletId
+          }
+        )
+        this.$q.notify({
+          type: 'positive',
+          message: 'Wallet configured successfully'
+        })
+        this.userWalletDialog.show = false
+        await this.loadUserWallet()
+      } catch (error) {
+        LNbits.utils.notifyApiError(error)
+      } finally {
+        this.userWalletDialog.loading = false
+      }
+    },
     async submitExpense() {
       this.expenseDialog.loading = true
       try {
@@ -252,5 +307,6 @@ window.app = Vue.createApp({
     await this.loadAccounts()
     await this.loadCurrencies()
     await this.loadSettings()
+    await this.loadUserWallet()
   }
 })