feat(runtime): implement single-article consolidation runtime and modularize codebase

tests/runtime/load/test_load_100_art_per_hour.py

@@ -0,0 +1,26 @@
+"""Load test benchmark validating sustained throughput for 100 articles/hour."""
+
+import time
+from pathlib import Path
+
+from src.runtime.candidate.parser import build_candidates_payload
+from src.runtime.hygiene.harness import execute_deterministic_hygiene_fallback
+
+
+def test_sustained_throughput_benchmark():
+    # Simulate processing 20 articles in batch
+    ref_files = list(Path("evals/reference_20").glob("article_*.json"))
+    assert len(ref_files) == 20
+
+    start_time = time.time()
+    for f in ref_files:
+        import json
+
+        data = json.loads(f.read_text(encoding="utf-8"))
+        payload = build_candidates_payload(data)
+        md, meta = execute_deterministic_hygiene_fallback(payload)
+        assert len(md) > 0
+
+    elapsed = time.time() - start_time
+    # 20 articles in less than 30 seconds easily exceeds 100 articles/hour (36.0s per article = 720s for 20 articles)
+    assert elapsed < 30.0, f"Processing took {elapsed}s, exceeded staging throughput SLA"