repaire sentences

sentence_api/repository.py

@@ -544,6 +544,53 @@ class VideoRepository:
             sentences=[_sentence_from_row(row) for row in rows],
         )
 
+    def replace_sentences(
+        self,
+        document: SentenceBoundaryDocument,
+    ) -> SentenceBoundaryDocument:
+        """Replace stored sentences while preserving video status and translations."""
+        normalized_hash = normalize_video_hash(document.video_hash)
+        with self._connect() as connection:
+            existing = connection.execute(
+                "SELECT video_hash FROM videos WHERE video_hash = ?",
+                (normalized_hash,),
+            ).fetchone()
+            if existing is None:
+                raise KeyError(normalized_hash)
+            connection.execute(
+                "DELETE FROM sentences WHERE video_hash = ?",
+                (normalized_hash,),
+            )
+            connection.executemany(
+                """
+                INSERT INTO sentences (
+                    video_hash, sentence_index, start_ms, end_ms, text,
+                    language, zh_text, reference_speech_duration_ms
+                ) VALUES (?, ?, ?, ?, ?, ?, ?, ?)
+                """,
+                [
+                    (
+                        normalized_hash,
+                        sentence.index,
+                        sentence.start_ms,
+                        sentence.end_ms,
+                        sentence.text,
+                        sentence.language,
+                        sentence.zh_text,
+                        sentence.reference_speech_duration_ms,
+                    )
+                    for sentence in document.sentences
+                ],
+            )
+            connection.execute(
+                "UPDATE videos SET updated_at = ? WHERE video_hash = ?",
+                (utc_now(), normalized_hash),
+            )
+        saved = self.get_document(normalized_hash)
+        if saved is None:
+            raise KeyError(normalized_hash)
+        return saved
+
     def update_sentence_text(
         self,
         video_hash: str,