feat: add export_statistics and export_mentions make targets with dataset prefix markers

Add two new Makefile targets for exporting statistics and mentions data from the dataset file, each prefixed with "===" markers in the dataset.py dump function to enable clean grep extraction. The export_statistics target filters lines containing "Statistics:" while export_mentions filters lines containing "times ment", both writing results to separate export files.

Makefile

@@ -1,4 +1,4 @@
-all: build sync_excempt export_dataset export_stats merge_images
+all: build sync_excempt export_dataset export_stats merge_images export_statistics export_mentions
 
 build:
 	pip install build 
@@ -27,6 +27,20 @@ export_dataset:
 	@echo "Exporting dataset to be used for LLM embedding. Result will be ./export/0_dataset.txt"
 	dr.dataset > export/0_dataset.txt
 
+export_statistics:
+	@echo "Exporting statisticts. Result will be ./export/2_statistics.txt"
+	cat export/dataset.txt | grep "Statistics: "
+	cat export/dataset.txt | grep "Statistics: " > export/2_statistics.txt 
+
+
+export_mentions:
+	@echo "Exporting mentions. Result will be ./export/3_mentions.txt"
+	cat export/dataset.txt | grep "times ment"
+	cat export/dataset.txt | grep "times ment" > export/3_mentions.txt
+
+
 merge_images:
 	@echo "Merging images to one big image. Result will be ./export/1_graphs_compliation.png."
 	python merge_images.py
+
+