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-rw-r--r--packages/meshbay-common/src/meshbay_common/__init__.py13
1 files changed, 12 insertions, 1 deletions
diff --git a/packages/meshbay-common/src/meshbay_common/__init__.py b/packages/meshbay-common/src/meshbay_common/__init__.py
index 842c52d..fbfdd4d 100644
--- a/packages/meshbay-common/src/meshbay_common/__init__.py
+++ b/packages/meshbay-common/src/meshbay_common/__init__.py
@@ -249,5 +249,16 @@ __version__ = "0.16.0"
# API. A pre-4.0 client presents the session token and is refused at the
# handshake — there is no compatibility branch, because leaving one would keep
# the disclosure reachable on every node. So the floor moves with it.
-MNP_VERSION = "4.0"
+#
+# 5.0 (2026-09-28) is a MAJOR — four signed operations now sign everything they
+# do. `root_add` signed its path and not whether every member may write there;
+# `group_attach` signed a group's name and not the directory it exposes;
+# `invite_create` did not sign the name it records; `tmdb_config` did not bind
+# the token (it now names its SHA-256). Each subject is canonical JSON of every
+# value the node acts on (`adminop.structured_subject`). A 4.x client refuses to
+# sign the new subjects, and a 5.0 client the old ones — so those four fail, with
+# a refusal, across the break. The break is confined to them, so the floor stays
+# at 4.0: everything else a 4.x peer does still works, and nothing is left
+# unsigned on either side — no node accepts the old subjects.
+MNP_VERSION = "5.0"
MHP_VERSION = "0.1"