fix: ensure permission/stats persist until explicit disconnect (#110)

Also includes cached tokens in cost calculations to provide more accurate billing estimates.

Reviewed-on: #110
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/routes/+page.svelte

@@ -8,6 +8,7 @@
     initializeDiscordRpc,
     stopDiscordRpc,
     updateDiscordRpc,
+    setSkipNextGreeting,
   } from "$lib/tauri";
   import { configStore, applyTheme, applyFontSize, isCompactMode } from "$lib/stores/config";
   import { initNotificationSync, cleanupNotificationSync } from "$lib/stores/notifications";
@@ -278,6 +279,9 @@
       const conversationId = get(claudeStore.activeConversationId);
       if (!conversationId) return;
 
+      // Set flag to preserve stats/permissions (don't treat next connect as new session)
+      setSkipNextGreeting(true);
+
       await invoke("interrupt_claude", { conversationId });
       claudeStore.addLine("system", "Process interrupted");
     } catch (error) {