Add a Pending Signatures card to the wallet home screen

Surfaces multisig operations awaiting the current signatory's own
approval directly on the main balance screen, instead of requiring
navigation to the separate pending-operations list. Each row shows the
formatted amount, destination, chain, and approval progress, with a
red Sign button that opens the existing operation-details/approve flow
(fee estimation, signatory balance check, and validation are all
already handled there - not reimplemented here).

Reuses the already-tested MultisigCallFormatter from
feature-multisig:operations (added as a new feature-assets dependency,
exposed via the standard FeatureApi/FeatureContainer pattern - see
AssetsFeatureHolder/AssetsFeatureComponent/AssetsFeatureDependencies)
rather than re-deriving call-preview formatting independently. The
card follows the same SingleItemAdapter + ConcatAdapter pattern as the
existing Pezkuwi Dashboard card on the same screen.

Once a pending operation is actually signed, it naturally drops off
this list on the next sync (no separate client-side "signed" state is
tracked in parallel with the real on-chain approval status).

String only added to the base (English) strings.xml for now - not yet
translated into the other ~14 locales this app otherwise maintains.

app/src/main/java/io/novafoundation/nova/app/root/navigation/navigators/Navigator.kt

@@ -108,6 +108,8 @@ import io.novafoundation.nova.feature_ledger_impl.presentation.account.addChain.
 import io.novafoundation.nova.feature_ledger_impl.presentation.account.common.selectLedger.SelectLedgerPayload
 import io.novafoundation.nova.feature_multisig_operations.presentation.created.MultisigCreatedBottomSheet
 import io.novafoundation.nova.feature_multisig_operations.presentation.created.MultisigCreatedPayload
+import io.novafoundation.nova.feature_multisig_operations.presentation.details.general.MultisigOperationDetailsFragment
+import io.novafoundation.nova.feature_multisig_operations.presentation.details.general.MultisigOperationDetailsPayload
 import io.novafoundation.nova.feature_onboarding_impl.OnboardingRouter
 import io.novafoundation.nova.feature_onboarding_impl.presentation.welcome.WelcomeFragment
 import io.novafoundation.nova.feature_swap_api.presentation.model.SwapSettingsPayload
@@ -983,6 +985,12 @@ class Navigator(
             .navigateInFirstAttachedContext()
     }
 
+    override fun openMultisigOperationDetails(payload: MultisigOperationDetailsPayload) {
+        navigationBuilder().action(R.id.action_multisigOperationDetailsFragment)
+            .setArgs(MultisigOperationDetailsFragment.createPayload(payload))
+            .navigateInFirstAttachedContext()
+    }
+
     override fun openMainWithFinishMultisigTransaction(accountWasSwitched: Boolean) {
         val payload = MultisigCreatedBottomSheet.createPayload(MultisigCreatedPayload(accountWasSwitched))
         openSplitScreenWithInstantAction(R.id.action_open_multisigCreatedDialog, nestedActionExtras = payload)