able to re-transcribe

frontend/src/store/editorStore.ts

@@ -92,6 +92,7 @@ interface EditorActions {
   setTranscribing: (active: boolean, progress?: number, status?: string) => void;
   setExporting: (active: boolean, progress?: number) => void;
   setZonePreviewPaddingSeconds: (seconds: number) => void;
+  replaceWordRange: (startIndex: number, endIndex: number, newWords: Word[]) => void;
   getKeepSegments: () => Array<{ start: number; end: number }>;
   getWordAtTime: (time: number) => number;
   loadProject: (projectData: any) => void;
@@ -473,6 +474,41 @@ export const useEditorStore = create<EditorState & EditorActions>()(
         set({ zonePreviewPaddingSeconds: nextSeconds });
       },
 
+      replaceWordRange: (startIndex, endIndex, newWords) => {
+        const { words } = get();
+        if (startIndex < 0 || endIndex >= words.length || startIndex > endIndex) return;
+
+        // Replace words in the range with new words
+        const before = words.slice(0, startIndex);
+        const after = words.slice(endIndex + 1);
+        const updatedWords = [...before, ...newWords, ...after];
+
+        // Rebuild segments from updated words, grouping by speaker
+        const rebuiltSegments: Segment[] = [];
+        let wordIdx = 0;
+        let cumIdx = 0;
+        while (wordIdx < updatedWords.length) {
+          const currentSpeaker = updatedWords[wordIdx].speaker;
+          const groupWords: Word[] = [];
+          while (wordIdx < updatedWords.length && updatedWords[wordIdx].speaker === currentSpeaker) {
+            groupWords.push(updatedWords[wordIdx]);
+            wordIdx++;
+          }
+          rebuiltSegments.push({
+            id: rebuiltSegments.length,
+            start: groupWords[0].start,
+            end: groupWords[groupWords.length - 1].end,
+            text: groupWords.map((w) => w.word).join(' '),
+            words: groupWords,
+            speaker: currentSpeaker,
+            globalStartIndex: cumIdx,
+          });
+          cumIdx += groupWords.length;
+        }
+
+        set({ words: updatedWords, segments: rebuiltSegments, selectedWordIndices: [] });
+      },
+
       getKeepSegments: () => {
         const { words, cutRanges, duration } = get();
         if (words.length === 0) return [{ start: 0, end: duration }];