refactor(viewer): drop kon_history localStorage; route edits through update_transcript

src/lib/stores/page.svelte.js

@@ -83,9 +83,9 @@ export function saveProfiles() {
 // array is seeded empty on module init and hydrated from SQLite on boot
 // in the desktop runtime. Browser preview (no Tauri) shows an empty list.
 //
-// The previous `kon_history` localStorage read-cache was removed to kill
-// the cold-start flicker where the UI painted stale localStorage data and
-// then overwrote it from SQLite a tick later.
+// The previous localStorage history read-cache was removed to kill the
+// cold-start flicker where the UI painted stale cached data and then
+// overwrote it from SQLite a tick later.
 
 import { invoke } from "@tauri-apps/api/core";
 import { hasTauriRuntime } from "$lib/utils/runtime.js";