Update icons, screenshots, and UX improvements

- Refactor icon picker to use full Ionicons set dynamically
- Add date sort toggle to My Answers screen
- Fix match deduplication and show total count on home
- Clear stale data when switching chats
- Update app store screenshots
- Bump build number to 25

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/mobile/src/lib/packIcons.ts

@@ -1,7 +1,15 @@
-import type { Ionicons } from "@expo/vector-icons";
+import { Ionicons } from "@expo/vector-icons";
 
 type IoniconsName = keyof typeof Ionicons.glyphMap;
 
+/**
+ * Checks if a string is a valid Ionicons name.
+ * Uses the actual Ionicons.glyphMap for runtime validation.
+ */
+function isValidIonicon(name: string): name is IoniconsName {
+    return name in Ionicons.glyphMap;
+}
+
 // Legacy emoji mappings (for backwards compatibility with existing packs)
 const EMOJI_TO_IONICON: Record<string, IoniconsName> = {
     // Career & Professional
@@ -49,63 +57,20 @@ export const PACK_ICON_MAP = EMOJI_TO_IONICON;
 
 export const DEFAULT_PACK_ICON: IoniconsName = "layers-outline";
 
-// List of valid Ionicon names (subset we support)
-const VALID_IONICONS = new Set([
-    "heart-outline",
-    "heart-half-outline",
-    "heart-circle-outline",
-    "chatbubbles-outline",
-    "chatbox-outline",
-    "mail-outline",
-    "flower-outline",
-    "wine-outline",
-    "restaurant-outline",
-    "cafe-outline",
-    "airplane-outline",
-    "car-outline",
-    "compass-outline",
-    "map-outline",
-    "home-outline",
-    "people-outline",
-    "person-outline",
-    "eye-off-outline",
-    "key-outline",
-    "lock-closed-outline",
-    "dice-outline",
-    "gift-outline",
-    "sparkles-outline",
-    "star-outline",
-    "flame-outline",
-    "flash-outline",
-    "moon-outline",
-    "sunny-outline",
-    "flag-outline",
-    "calendar-outline",
-    "checkbox-outline",
-    "trophy-outline",
-    "layers-outline",
-    "cube-outline",
-    "folder-outline",
-    "bookmark-outline",
-    "bulb-outline",
-    "color-wand-outline",
-    "sync-outline",
-    "refresh-outline",
-    "briefcase-outline",
-]);
-
 /**
  * Converts an icon value to an Ionicons name.
  * Handles both:
- * - Ionicon names directly (new packs): "briefcase-outline" -> "briefcase-outline"
+ * - Any valid Ionicon name directly: "briefcase-outline" -> "briefcase-outline"
  * - Legacy emojis (existing packs): "💼" -> "briefcase-outline"
  */
 export function getPackIconName(icon: string | null | undefined): IoniconsName {
     if (!icon) return DEFAULT_PACK_ICON;
 
-    if (VALID_IONICONS.has(icon)) {
-        return icon as IoniconsName;
+    // Check if it's a valid Ionicon name (supports the full Ionicons set)
+    if (isValidIonicon(icon)) {
+        return icon;
     }
 
+    // Fall back to emoji mapping for legacy packs
     return EMOJI_TO_IONICON[icon] || DEFAULT_PACK_ICON;
 }