Fix path-scoped duplicate detection

tests/test_reconciliation.py

@@ -80,6 +80,28 @@ def test_reconciliation_dedupes_diffs_and_tombstones_by_scope() -> None:
     assert any(tombstone["stable_key"].endswith("ancient-api") for tombstone in reconciled["tombstones"])
 
 
+def test_reconciliation_keeps_distinct_path_scoped_lockfiles_separate() -> None:
+    scope = _scope("lockfiles", "file", "var/checkouts", "replacement")
+    uv_a = "discovery:fixture-repo:lockfile:var-checkouts-a-uv.lock"
+    uv_b = "discovery:fixture-repo:lockfile:var-checkouts-b-uv.lock"
+
+    current = _snapshot(
+        replacement_scopes=[scope],
+        nodes=[
+            _node(uv_a, "Lockfile", "uv.lock", scope["id"], source_path="var/checkouts/a/uv.lock"),
+            _node(uv_b, "Lockfile", "uv.lock", scope["id"], source_path="var/checkouts/b/uv.lock"),
+        ],
+    )
+
+    reconciled = reconcile_discovery_snapshots(None, current, retired_at="2026-05-19T00:00:00Z")
+
+    assert reconciled["reconciliation"]["conflicts"] == []
+    assert reconciled["reconciliation"]["diff"]["conflicted"] == []
+    nodes = {node["stable_key"]: node for node in reconciled["candidates"]["nodes"]}
+    assert nodes[uv_a]["review_state"] == "candidate"
+    assert nodes[uv_b]["review_state"] == "candidate"
+
+
 def test_scan_cli_reconciles_against_previous_snapshot(tmp_path: Path, capsys) -> None:
     repo = tmp_path / "fixture-repo"
     repo.mkdir()
@@ -231,8 +253,9 @@ def _node(
     review_state: str = "candidate",
     aliases: list[str] | None = None,
     attributes: dict[str, object] | None = None,
+    source_path: str = "README.md",
 ) -> dict[str, object]:
-    anchor = _anchor("file", "README.md")
+    anchor = _anchor("file", source_path)
     return {
         "stable_key": stable_key,
         "kind": kind,