Redesign mobile time clock, add shortcuts, and improve account management.

Add iOS Shortcuts/Siri intents, local send-reminder notifications, stable
client picker with last-client defaults, account refresh/remove, and softer
session handling on unauthorized API responses.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/(app)/index.tsx

@@ -62,6 +62,7 @@ export default function DashboardScreen() {
         : "No change vs last month";
 
   const maxRevenue = Math.max(...stats.revenueChartData.map((d) => d.revenue), 1);
+  const sendReminderDue = stats.sendReminderDue ?? [];
 
   return (
     <AppBackground>
@@ -118,6 +119,26 @@ export default function DashboardScreen() {
             </GlassSurface>
           ) : null}
 
+          {sendReminderDue.length > 0 ? (
+            <GlassSurface style={styles.alertGlass}>
+              <View style={styles.alertBanner}>
+                <Text style={styles.alertTitle}>
+                  {sendReminderDue.length} draft{" "}
+                  {sendReminderDue.length === 1 ? "invoice" : "invoices"} ready to send
+                </Text>
+                <Text style={styles.alertText}>
+                  {sendReminderDue
+                    .slice(0, 2)
+                    .map(
+                      (inv) =>
+                        `${inv.invoicePrefix ?? "#"}${inv.invoiceNumber} (${inv.client?.name ?? "Client"})`,
+                    )
+                    .join(" · ")}
+                </Text>
+              </View>
+            </GlassSurface>
+          ) : null}
+
           <View style={styles.quickActions}>
             <Button title="Start timer" onPress={() => router.push("/(app)/timer")} />
             <Button