feat: add app icon branding to all remaining page headers

- CalendarView header now displays icon
- ReflectionsList header now displays icon
- AnsweredPrayers header now displays icon
- ThingsToPrayFor header now displays icon

Completes visual identity unification across all main screens

src/components/ThingsToPrayFor.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import React from 'react';
-import { HandHeart, Sparkles } from 'lucide-react';
+import { HandHeart, Sparkles, CheckCircle2, Target } from 'lucide-react';
 
 interface Prayer {
   id: string;
@@ -48,6 +48,7 @@ export default function ThingsToPrayFor({ prayers, onEdit, onMarkPrayed }: Thing
       <div className="max-w-2xl mx-auto">
         {/* Header */}
         <div className="text-center mb-12">
+          <img src="/icon-192x192.png" alt="Haver icon" className="w-12 h-12 mx-auto mb-3 rounded" />
           <h1 className="text-4xl font-bold bg-gradient-to-r from-blue-400 to-purple-400 bg-clip-text text-transparent mb-2">
             <span className="inline-flex items-center gap-2 justify-center">
               <HandHeart className="w-7 h-7 text-blue-400" />
@@ -73,8 +74,8 @@ export default function ThingsToPrayFor({ prayers, onEdit, onMarkPrayed }: Thing
               <div key={topic}>
                 <div className="flex items-center gap-2 mb-4">
                   <div className="h-1 flex-1 bg-gradient-to-r from-blue-500/50 to-transparent rounded"></div>
-                  <h2 className="text-xl font-bold text-blue-400 px-4">
-                    🎯 {topic}
+                  <h2 className="text-xl font-bold text-blue-400 px-4 inline-flex items-center gap-2">
+                    <Target className="w-5 h-5" /> {topic}
                   </h2>
                   <div className="h-1 flex-1 bg-gradient-to-l from-blue-500/50 to-transparent rounded"></div>
                 </div>
@@ -114,7 +115,15 @@ export default function ThingsToPrayFor({ prayers, onEdit, onMarkPrayed }: Thing
                                       : 'bg-blue-900/40 text-blue-300 border border-blue-500/30 hover:bg-blue-900/60 hover:border-blue-400/50'
                                   }`}
                                 >
-                                  {prayedToday ? '✓ Prayed Today' : '🙏 Mark Prayed'}
+                                  {prayedToday ? (
+                                    <span className="inline-flex items-center gap-1.5">
+                                      <CheckCircle2 className="w-4 h-4" /> Prayed Today
+                                    </span>
+                                  ) : (
+                                    <span className="inline-flex items-center gap-1.5">
+                                      <HandHeart className="w-4 h-4" /> Mark Prayed
+                                    </span>
+                                  )}
                                 </button>
                                 <button
                                   onClick={() => onEdit(prayer)}