feat: complete master feature parity with interactive PDF editing, Reveal.js export dialog, Large File Mode, and scoped CSS

src/renderer/stores/app-store.ts

@@ -23,6 +23,7 @@ export type ModalState =
   | { kind: 'export-docx'; props: { sourcePath: string } }
   | { kind: 'export-html'; props: { sourcePath: string } }
   | { kind: 'export-batch'; props: { sourcePaths: string[] } }
+  | { kind: 'export-revealjs'; props: { sourcePath: string } }
   | { kind: 'settings' }
   | { kind: 'about' }
   | { kind: 'welcome' }

src/renderer/stores/preview-store.ts

@@ -3,8 +3,11 @@ import { create } from 'zustand';
 interface PreviewState {
   source: string;
   scrollRatio: number;
+  largeFileMode: boolean;
   setSource: (s: string) => void;
   setScrollRatio: (r: number) => void;
+  setLargeFileMode: (v: boolean) => void;
+  forceRender: (s: string) => void;
 }
 
 const DEBOUNCE_MS = 300;
@@ -14,7 +17,12 @@ let pending: string = '';
 export const usePreviewStore = create<PreviewState>((set) => ({
   source: '',
   scrollRatio: 0,
+  largeFileMode: false,
   setSource: (s) => {
+    // If in large file mode, do not auto-update preview source on user typing
+    if (usePreviewStore.getState().largeFileMode) {
+      return;
+    }
     pending = s;
     if (timer) clearTimeout(timer);
     timer = setTimeout(() => {
@@ -22,4 +30,9 @@ export const usePreviewStore = create<PreviewState>((set) => ({
     }, DEBOUNCE_MS);
   },
   setScrollRatio: (r) => set({ scrollRatio: r }),
+  setLargeFileMode: (v) => set({ largeFileMode: v }),
+  forceRender: (s) => {
+    if (timer) clearTimeout(timer);
+    set({ source: s });
+  },
 }));