chore: change default model from haiku to sonnet

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

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

src/shared/SettingsDefaultsManager.ts

@@ -44,7 +44,7 @@ export class SettingsDefaultsManager {
    * Default values for all settings
    */
   private static readonly DEFAULTS: SettingsDefaults = {
-    CLAUDE_MEM_MODEL: 'claude-haiku-4-5',
+    CLAUDE_MEM_MODEL: 'claude-sonnet-4-5',
     CLAUDE_MEM_CONTEXT_OBSERVATIONS: '50',
     CLAUDE_MEM_WORKER_PORT: '37777',
     CLAUDE_MEM_WORKER_HOST: '127.0.0.1',

src/ui/viewer/constants/settings.ts

@@ -3,7 +3,7 @@
  * Shared across UI components and hooks
  */
 export const DEFAULT_SETTINGS = {
-  CLAUDE_MEM_MODEL: 'claude-haiku-4-5',
+  CLAUDE_MEM_MODEL: 'claude-sonnet-4-5',
   CLAUDE_MEM_CONTEXT_OBSERVATIONS: '50',
   CLAUDE_MEM_WORKER_PORT: '37777',
   CLAUDE_MEM_WORKER_HOST: '127.0.0.1',