Implement Elasticsearch functions in GO (#15160)

### What problem does this PR solve?

Implement Elasticsearch functions in GO (except for Search)

### Type of change

- [x] Refactoring

internal/handler/chunk.go

@@ -133,7 +133,7 @@ func (h *ChunkHandler) Get(c *gin.Context) {
 		return
 	}
 
-	chunkID := c.Query("chunk_id")
+	chunkID := c.Param("chunk_id")
 	if chunkID == "" {
 		c.JSON(http.StatusBadRequest, gin.H{
 			"code":    400,
@@ -337,7 +337,7 @@ func (h *ChunkHandler) UpdateChunk(c *gin.Context) {
 	})
 }
 
-// Remove handles chunk removal requests
+// RemoveChunks handles chunk removal requests
 // @Summary Remove Chunks
 // @Description Remove chunks from a document
 // @Tags chunks
@@ -345,14 +345,24 @@ func (h *ChunkHandler) UpdateChunk(c *gin.Context) {
 // @Produce json
 // @Param request body service.RemoveChunksRequest true "remove chunks request"
 // @Success 200 {object} map[string]interface{}
-// @Router /v1/chunk/rm [post]
-func (h *ChunkHandler) Remove(c *gin.Context) {
+// @Router /api/v1/datasets/{dataset_id}/documents/{document_id}/chunks [delete]
+func (h *ChunkHandler) RemoveChunks(c *gin.Context) {
 	user, errorCode, errorMessage := GetUser(c)
 	if errorCode != common.CodeSuccess {
 		jsonError(c, errorCode, errorMessage)
 		return
 	}
 
+	// Get document_id from URL path
+	docID := c.Param("document_id")
+	if docID == "" {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"code":    400,
+			"message": "document_id is required",
+		})
+		return
+	}
+
 	var req service.RemoveChunksRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{
@@ -362,6 +372,8 @@ func (h *ChunkHandler) Remove(c *gin.Context) {
 		return
 	}
 
+	req.DocID = docID
+
 	if req.DocID == "" {
 		c.JSON(http.StatusBadRequest, gin.H{
 			"code":    400,