perf: reduce startup work and fix grade analytics bar chart animation

Batch settings storage writes, tier plugin startup, lazy-load heavy UI
chunks, and optimize global search indexing. Stop tweening bar height in
grade analytics to prevent invalid negative SVG rect values.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/seqta/utils/openThemeStoreWithHighlight.ts

@@ -1,30 +1,15 @@
-import { OpenStorePage } from "@/seqta/ui/renderStore";
-
 /**
  * Module-level handoff for "open the theme store and highlight this theme".
- *
- * The store page is mounted lazily inside a Shadow DOM the first time it
- * opens, so a `CustomEvent` listener would have to be wired up before mount
- * (causing a race). Using a shared cell keeps the producer (popup button) and
- * consumer (store `onMount`) decoupled without that timing constraint.
- *
- * The store reads & clears this on mount via {@link consumePendingHighlightThemeId}.
  */
 let pendingHighlightThemeId: string | null = null;
 
-/** Read and clear the pending theme id (called by the store on mount). */
 export function consumePendingHighlightThemeId(): string | null {
   const id = pendingHighlightThemeId;
   pendingHighlightThemeId = null;
   return id;
 }
 
-/**
- * Opens the theme store and asks it to focus / highlight the given theme.
- * If the store is already mounted we dispatch a DOM event so it can react
- * without remounting; otherwise the store consumes the pending id on mount.
- */
-export function openThemeStoreWithHighlight(themeId: string): void {
+export async function openThemeStoreWithHighlight(themeId: string): Promise<void> {
   pendingHighlightThemeId = themeId;
 
   const existing = document.getElementById("store");
@@ -35,5 +20,6 @@ export function openThemeStoreWithHighlight(themeId: string): void {
     return;
   }
 
-  OpenStorePage();
+  const { OpenStorePage } = await import("@/seqta/ui/renderStore");
+  await OpenStorePage();
 }