feat(k1): integrate durable evidence with acquisition lifecycle

src/k1link/viewer/runtime.py

@@ -514,9 +514,9 @@ class VisualizationRuntime:
             callback()
 
 
-def new_live_session_dir(repository_root: Path) -> Path:
+def new_live_session_dir(sessions_root: Path) -> Path:
     stamp = datetime.now(UTC).strftime("%Y%m%dT%H%M%SZ")
-    base = repository_root / "sessions" / f"{stamp}_viewer_live"
+    base = sessions_root / f"{stamp}_viewer_live"
     candidate = base
     suffix = 1
     while candidate.exists():