refactor(mnp): remove ten operator messages no client sent0.17

node_status, node_settings_set, roster_read, denylist_read, denylist_clear,
node_reload and the signed gek_rotate, member_unpin, transfer_limits,
group_detach leave MNP 6.0; the Node page and the CLI do this work over
loopback. Their ops keep their tests, moved to the ops level.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

4 files changed, 15 insertions, 43 deletions

diff --git a/packages/meshbay-common/src/meshbay_common/__init__.py b/packages/meshbay-common/src/meshbay_common/__init__.py
index cb84e2c..2a58326 100644
--- a/packages/meshbay-common/src/meshbay_common/__init__.py
+++ b/packages/meshbay-common/src/meshbay_common/__init__.py
@@ -267,5 +267,10 @@ __version__ = "0.17.0"
 # desktop application over loopback, or the CLI), never
 # over the wire. A 5.x client that sends one gets no answer, as for any unknown
 # type; everything else it does still works, so the floor stays at 4.0.
+# The same version removes ten operator messages no client ever sent —
+# `gek_rotate`, `member_unpin`, `transfer_limits`, `group_detach` (signed) and
+# `node_status`, `node_settings_set`, `roster_read`, `denylist_read`,
+# `denylist_clear`, `node_reload` — whose work the Node page and the CLI do over
+# loopback.
 MNP_VERSION = "6.0"
 MHP_VERSION = "0.1"
diff --git a/packages/meshbay-common/src/meshbay_common/adminop.py b/packages/meshbay-common/src/meshbay_common/adminop.py
index b8915a9..bd7a439 100644
--- a/packages/meshbay-common/src/meshbay_common/adminop.py
+++ b/packages/meshbay-common/src/meshbay_common/adminop.py
@@ -47,14 +47,6 @@ OP_INVITE_LINK_CREATE = "invite_link_create"
 # Taking back an unredeemed link, by the handle it was issued with.
 OP_INVITE_CANCEL = "invite_cancel"
 OP_MEMBER_REVOKE = "member_revoke"
-# Rotating the group key is what actually takes it away from a revoked member:
-# revocation stops the node serving the *next* key, and they still hold the
-# current one. The node generates the new key itself with its own CSPRNG, so
-# nothing arriving over MNP contributes key material — the C5b rule is about
-# key material from outside, not about the instruction.
-OP_GEK_ROTATE = "gek_rotate"
-# Forgetting a pinned identity, so someone can pair again after losing a device.
-OP_MEMBER_UNPIN = "member_unpin"
 # Which group "applications" (Chat, Files, and whatever registers later) are
 # shown to members. Signed like the rest: it decides what a member sees, not
 # anything about key material, but an unsigned toggle would let any member
@@ -67,11 +59,6 @@ OP_APPS_ENABLED = "apps_enabled"
 # security property in itself, but the pattern (every operator setting is
 # signed) is what keeps the authorization model simple to reason about.
 OP_SET_SCAN_SETTINGS = "set_scan_settings"
-# How many transfers one member may run at once in this group. Signed like the
-# rest: an unsigned cap is one any member can raise for themselves, which makes
-# the control a suggestion. The subject is "d=2,u=2" so what the operator is
-# shown before signing names the outcome and not the operation.
-OP_TRANSFER_LIMITS = "transfer_limits"
 # Whether the node uses the operator's own API token/language instead of the
 # shipped default — node-wide (docs/MESHBAY_DESIGN.md §9.7), one credential
 # shared by every group. Signed like the rest: it turns on outbound
@@ -114,16 +101,19 @@ OP_CHAT_LINK_PREVIEW = "chat_link_preview"
 # operator's, signed like the other per-group switches.
 OP_SEARCH_LISTED = "search_listed"
 # Open a new chat epoch for a group, by hand. The removals that matter open one
-# by themselves (member revoke/unpin, device revoke, gek_rotate); this is the
-# operator saying "do it anyway", which is the same shape as `gek_rotate` and
-# signed for the same reason.
+# by themselves (member revoke/unpin, device revoke, group key rotation); this is the
+# operator saying "do it anyway", and is signed like the rest.
 #
 # There is no op for *enabling* chat encryption. It is not a setting — MNP 2.0
 # has no plaintext chat to fall back to.
 OP_CHAT_EPOCH = "chat_epoch"
 OP_ROOT_EJECT = "root_eject"
 OP_ROOT_PLUG = "root_plug"
-OP_GROUP_DETACH = "group_detach"
+# Also gone with 6.0, because no client ever sent them: `gek_rotate`,
+# `member_unpin`, `transfer_limits` and `group_detach`. Rotating the group key,
+# forgetting an identity, the per-member transfer caps and no longer hosting a
+# group are done on the node's machine — the desktop application's Node page
+# or the CLI. A door nobody uses is an untested way in.
 # OP_ROOT_ADD, OP_ROOT_UPDATE and OP_GROUP_ATTACH are gone (MNP 6.0). Each one
 # chose what of the operator's disk is shared and who may write there, and a
 # signature proves only that the operator's key signed — in a browser, through
diff --git a/packages/meshbay-common/src/meshbay_common/groupbox.py b/packages/meshbay-common/src/meshbay_common/groupbox.py
index 260e362..ae79fcc 100644
--- a/packages/meshbay-common/src/meshbay_common/groupbox.py
+++ b/packages/meshbay-common/src/meshbay_common/groupbox.py
@@ -74,7 +74,7 @@ _INFO = {
 # the bound that matters is birthday collision under `PURPOSE_UPLOAD` — the only
 # purpose with real volume, one message per 48 KiB chunk. 2**32 chunks is 200 TB
 # uploaded under a single GEK before the collision probability reaches 2**-32,
-# and `gek_rotate` exists. Deriving the nonce from the payload instead would be
+# and the group key can be rotated. Deriving the nonce from the payload instead would be
 # worse, not better: two chunks of identical bytes are ordinary in a file.
 
 NONCE_LEN = 12   # 96-bit, the WebCrypto AES-GCM standard
diff --git a/packages/meshbay-common/src/meshbay_common/protocol.py b/packages/meshbay-common/src/meshbay_common/protocol.py
index 2c7e301..f8e56ec 100644
--- a/packages/meshbay-common/src/meshbay_common/protocol.py
+++ b/packages/meshbay-common/src/meshbay_common/protocol.py
@@ -154,12 +154,8 @@ class MNP:
     INVITE_CANCEL        = "invite_cancel"         # operator → node: take back an unredeemed link
     MEMBER_REVOKE        = "member_revoke"         # operator → node: stop serving the key
     MEMBER_REVOKE_ACK    = "member_revoke_ack"
-    MEMBER_UNPIN         = "member_unpin"          # operator → node: forget an identity
-    MEMBER_UNPIN_ACK     = "member_unpin_ack"
     APPS_ENABLED         = "apps_enabled"          # operator → node: which group apps to show
     APPS_ENABLED_ACK     = "apps_enabled_ack"
-    TRANSFER_LIMITS       = "transfer_limits"       # operator → node: per-member caps here
-    TRANSFER_LIMITS_ACK   = "transfer_limits_ack"   # node → this group: the new caps
     SET_SCAN_SETTINGS     = "set_scan_settings"     # operator → node: reconcile/debounce timing
     SET_SCAN_SETTINGS_ACK = "set_scan_settings_ack"
     MEDIA_META_REQ        = "media_meta_req"        # client → node: TMDB metadata for a path
@@ -216,14 +212,8 @@ class MNP:
     # where it was.
     DEVICE_HELLO         = "device_hello"          # device → node: this is me
     DEVICE_HELLO_ACK     = "device_hello_ack"
-    # Rotation is the half of revocation that revocation cannot do: the node
-    # generates a fresh key itself, so no key material crosses the wire.
-    GEK_ROTATE           = "gek_rotate"            # operator → node: new group key
-    GEK_ROTATE_ACK       = "gek_rotate_ack"
     INVITE_RESULT        = "invite_result"         # node → operator: the code, once
     INVITE_LINK_RESULT   = "invite_link_result"    # node → operator: link code + handle, once
-    NODE_STATUS          = "node_status"           # operator → node: list all groups + roots
-    NODE_STATUS_ACK      = "node_status_ack"       # node → operator: full status
     ROOT_REMOVE          = "root_remove"           # operator → node: remove a root from a group
     ROOT_REMOVE_ACK      = "root_remove_ack"       # node → operator: confirmed
     # One message for every application's directories, keyed by the app's own
@@ -259,25 +249,12 @@ class MNP:
     ROOT_PLUG            = "root_plug"             # operator → node: re-enable an ejected root
     ROOT_PLUG_ACK        = "root_plug_ack"
     # Member → node: who is in this group and which device keys they hold, with
-    # the countersignature that admitted each one. Distinct from ROSTER_READ
-    # below, which is the operator's view of the whole node: this is scoped to
-    # one group and answers any member of it, because the point is that a member
+    # the countersignature that admitted each one. Scoped to one group and
+    # answers any member of it, because the point is that a member
     # verifies another member's device *for themselves* rather than trusting the
     # node's `sender_id` (Tier 2, docs/MESHBAY_DESIGN.md §3.3).
     GROUP_ROSTER_REQ     = "group_roster_req"
     GROUP_ROSTER_RESP    = "group_roster_resp"
-    ROSTER_READ          = "roster_read"            # operator → node: identities + members
-    ROSTER_READ_ACK      = "roster_read_ack"
-    DENYLIST_READ        = "denylist_read"          # operator → node: show denylist entries
-    DENYLIST_READ_ACK    = "denylist_read_ack"
-    DENYLIST_CLEAR       = "denylist_clear"         # operator → node: remove denylist entry(ies)
-    DENYLIST_CLEAR_ACK   = "denylist_clear_ack"
-    GROUP_DETACH         = "group_detach"           # operator → node: stop hosting a group
-    GROUP_DETACH_ACK     = "group_detach_ack"
-    NODE_SETTINGS_SET    = "node_settings_set"      # operator → node: change daemon settings
-    NODE_SETTINGS_SET_ACK = "node_settings_set_ack"
-    NODE_RELOAD          = "node_reload"            # operator → node: re-read node.toml
-    NODE_RELOAD_ACK      = "node_reload_ack"
 
 
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