test: 삭제된 심볼 참조 정리 (session_id, rag-v1→v4, cache_capacity) — worker cargo check가 test 타깃 미컴파일로 누락

crates/kebab-cli/tests/cli_ingest_stdin.rs

@@ -65,7 +65,7 @@ rrf_k = 60
 snippet_chars = 220
 
 [rag]
-prompt_template_version = "rag-v1"
+prompt_template_version = "rag-v4"
 score_gate = 0.30
 explain_default = false
 max_context_tokens = 8000