fix(tests): assert the withdrawn flag on its row, not on a count the skew margin inflates (#4208)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01821k5B3Ysecp9fNYs92Kuy

tests/test_integration_shape_classify.py

@@ -1057,24 +1057,36 @@ async def test_a_later_conclusive_miss_withdraws_a_flag_raised_before_it(seeded)
     from unittest.mock import AsyncMock, patch
 
     from scribe.services import shape_ledger
-    from scribe.services.shape_ledger import flag_divergence, propose_for_repo
+    from scribe.services.shape_ledger import (
+        BASIS_NO_SEMANTIC_MATCH, flag_divergence, live_rows, propose_for_repo,
+    )
 
     owner, pid, later, previous = await _two_generations(seeded, "withdraw")
     since = previous - timedelta(seconds=1)
 
+    async def _danger():
+        return next(r for r in await live_rows(pid) if r.symbol == "confirmDanger")
+
+    # Asserted on the ROW, not on a flag count. `since` sits a second before
+    # the second sync to absorb clock skew, which also admits the fixture's
+    # old helper as "new" — how many rows get flagged is a property of that
+    # margin, and this test is about one row's flag coming off.
+
     # First refresh: the arm is quiet (formed no opinion), so the prompt is raised.
     with patch.object(shape_ledger, "_semantic_canon", AsyncMock(return_value=None)):
         await propose_for_repo(owner, pid, REPO, later)
-    assert await flag_divergence(pid, since=since) == 1
+    await flag_divergence(pid, since=since)
+    assert (await _danger()).diverges_from is not None
 
     # A later refresh re-reads the body (a ruleset bump forces it) and is sure.
     with patch.object(shape_ledger, "_PROPOSER_VERSION", 10_000), \
          patch.object(shape_ledger, "_semantic_canon",
                       AsyncMock(side_effect=_conclusive)):
         await propose_for_repo(owner, pid, REPO, later)
-    assert await flag_divergence(pid, since=since) == 0
+    await flag_divergence(pid, since=since)
-    _, total = await list_project_shapes(owner, pid, flag="divergence")
+    danger = await _danger()
-    assert total == 0
+    assert danger.proposal_basis == BASIS_NO_SEMANTIC_MATCH
+    assert danger.diverges_from is None
 
 
 @pytest.mark.integration