feat/E7: add prompt ablation qrels sahabat-llama_vllm_zeroshot_basic_test.txt

feat/E7: add prompt ablation qrels sahabat-llama_vllm_fewshot_bing_test.txt

feat/E7: add prompt ablation qrels sahabat-llama_vllm_fewshot_basic_test.txt

feat/E7: add prompt ablation qrels sahabat-gemma_vllm_zeroshot_bing_test.txt

feat/E7: add prompt ablation qrels sahabat-gemma_vllm_zeroshot_bing_strict_test.txt

add BM25 index (bm25s Lucene k1=1.5 b=0.75, 1.4M passages)

Add Qwen2.5-7B judge qrels — val split

Add Qwen2.5-7B judge qrels — train split

Add Qwen2.5-7B judge qrels — test split (9668 pairs)

Add human qrels val.txt (rel=1 pos + rel=0 neg)

Add human qrels train.txt (rel=1 pos + rel=0 neg)

Add processed MIRACL-ID data (train/val/test splits)

initial commit