From 474071d632802a96ebd0a24a61b3b88393044a1e Mon Sep 17 00:00:00 2001
From: Andrey Golovanov <networmix@gmail.com>
Date: Thu, 29 Oct 2026 13:04:41 +0000
Subject: [PATCH] Release NetLab-TopoGen 0.6.1

NetLab-TopoGen requires NetGraph 0.26 (ngraph>=0.26.0,<0.27), which chooses the bandwidth unit q once from a static
bound. The DC audit regression now states its precondition for each case (an excess below half a unit, or an exact
fit that rounding would push over capacity) instead of a fixed coarse q.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 CHANGELOG.md             |  6 ++++++
 pyproject.toml           |  4 ++--
 tests/test_validation.py | 18 ++++++++++++------
 3 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 964b5e2..97cc016 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.6.1] - 2026-10-29
+
+### Changed
+
+- **BREAKING**: **Dependencies**: Require `ngraph>=0.26.0,<0.27`, which chooses the bandwidth unit `q` once from a static bound.
+
 ## [0.6.0] - 2026-10-27
 
 ### Fixed
diff --git a/pyproject.toml b/pyproject.toml
index 7e64919..edb8b05 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "netlab-topogen"
-version = "0.6.0"
+version = "0.6.1"
 description = "Generate NetGraph backbone scenarios from US Census urban areas and TIGER/Line roads."
 readme = "README.md"
 authors = [{ name = "Andrey Golovanov" }]
@@ -43,7 +43,7 @@ dependencies = [
     # Strict schema validation at runtime
     "jsonschema",
     # NetGraph ecosystem
-    "ngraph>=0.25.0,<0.26",
+    "ngraph>=0.26.0,<0.27",
 ]
 
 # Dev / CI extras
diff --git a/tests/test_validation.py b/tests/test_validation.py
index 32a3110..855c5d1 100644
--- a/tests/test_validation.py
+++ b/tests/test_validation.py
@@ -289,12 +289,12 @@ def test_nonempty_platform_mapping_requires_installed_platforms():
 @pytest.mark.parametrize(
     "capacity,volume,excess",
     [
-        (1001, 1001, False),
-        (1003, 1003, False),
+        (20001, 20001, False),
+        (40003, 40003, False),
         (33333, 33333, False),
-        (100, 100.02, True),
-        (4097, 4097.8194, True),
-        (20001, 20005.0002, True),
+        (100, 100.002, True),
+        (4097, 4097.0625, True),
+        (20000, 20000.5, True),
     ],
 )
 def test_dc_audit_uses_declared_volume_with_automatic_units(
@@ -311,14 +311,20 @@ def test_dc_audit_uses_declared_volume_with_automatic_units(
     assert "units" not in yaml.safe_load(build.yaml)
     result = validate_scenario(build.yaml, cfg.components)
     assert result.prepared is not None
-    assert result.prepared.topology.q > 0.01
+    q = result.prepared.topology.q
+    demands = result.prepared.demand_sets["default"].demands
+    assert len(demands) == 2
     if excess:
+        assert 0 < volume - capacity < q / 2
+        assert all(d.nominal_units * q <= capacity for d in demands)
         assert result.issues == tuple(
             f"dc capacity: demand set 'default', metro{site}/dc1 {direction} demand {volume:,.6g} exceeds adjacency capacity {capacity:,.6g}"
             for direction in ("egress", "ingress")
             for site in (1, 2)
         )
     else:
+        assert volume == capacity
+        assert all(capacity < d.nominal_units * q <= capacity + q / 2 for d in demands)
         assert not result.issues