chore: release 0.5.0

Two rounds of features and one long hunt.

The hub gained leaving a group, a cap of ten live public groups per owner, and
the rule that a group is listed only once a node has announced it — with
`prune-groups` to collect the ones that never got one. Presence rides on the
group list, from the registry the hub already keeps for signaling. The web
client speaks ten languages, splits Profile from Settings, and reads chat the
way it is written: newest first, paging backwards.

The rest was one symptom — "close the viewer, the next video hangs" — with three
independent causes underneath, none of which the test suite or e2e.py could see.
A background task the loop only weakly referenced, collected while it held a
transcode slot. A connection-state handler that forgot a peer without stopping
it. And `await proc.wait()` deadlocking on ffmpeg's own unread output, which no
amount of SIGKILL resolves. Found by instrumenting the node and reading the log,
after two confident fixes that addressed real but different bugs.

MNP goes to 0.2: PING/PONG and backward chat paging, both additive.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

5 files changed, 7 insertions, 7 deletions

diff --git a/packages/meshbay-common/pyproject.toml b/packages/meshbay-common/pyproject.toml
index f8d4673..62a9d8b 100644
--- a/packages/meshbay-common/pyproject.toml
+++ b/packages/meshbay-common/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "meshbay-common"
-version = "0.4.0"
+version = "0.5.0"
 description = "MeshBay shared cryptographic primitives and protocol types"
 requires-python = ">=3.12"
 dependencies = [
diff --git a/packages/meshbay-hub/pyproject.toml b/packages/meshbay-hub/pyproject.toml
index 4c18b10..6a83794 100644
--- a/packages/meshbay-hub/pyproject.toml
+++ b/packages/meshbay-hub/pyproject.toml
@@ -4,11 +4,11 @@ build-backend = "hatchling.build"
 
 [project]
 name = "meshbay-hub"
-version = "0.4.0"
+version = "0.5.0"
 description = "MeshBay Hub — identity authority and group registry server"
 requires-python = ">=3.12"
 dependencies = [
-    "meshbay-common>=0.4.0",
+    "meshbay-common>=0.5.0",
     "fastapi>=0.115",
     "uvicorn[standard]>=0.30",
     "sqlalchemy>=2.0",
diff --git a/packages/meshbay-hub/src/meshbay_hub/__init__.py b/packages/meshbay-hub/src/meshbay_hub/__init__.py
index 9af9cba..90e3066 100644
--- a/packages/meshbay-hub/src/meshbay_hub/__init__.py
+++ b/packages/meshbay-hub/src/meshbay_hub/__init__.py
@@ -1,3 +1,3 @@
 """MeshBay Hub — identity authority and group registry."""
 
-__version__ = "0.4.0"
+__version__ = "0.5.0"
diff --git a/packages/meshbay-node/pyproject.toml b/packages/meshbay-node/pyproject.toml
index a150fb3..f81a740 100644
--- a/packages/meshbay-node/pyproject.toml
+++ b/packages/meshbay-node/pyproject.toml
@@ -4,11 +4,11 @@ build-backend = "hatchling.build"
 
 [project]
 name = "meshbay-node"
-version = "0.4.0"
+version = "0.5.0"
 description = "MeshBay Node — local file host, streaming server, and group daemon"
 requires-python = ">=3.12"
 dependencies = [
-    "meshbay-common>=0.4.0",
+    "meshbay-common>=0.5.0",
     "fastapi>=0.115",           # local web UI on localhost:18000
     "uvicorn[standard]>=0.30",
     "httpx>=0.28",              # hub client
diff --git a/packages/meshbay-node/src/meshbay_node/__init__.py b/packages/meshbay-node/src/meshbay_node/__init__.py
index 25e544b..407c2a4 100644
--- a/packages/meshbay-node/src/meshbay_node/__init__.py
+++ b/packages/meshbay-node/src/meshbay_node/__init__.py
@@ -1,3 +1,3 @@
 """MeshBay Node — local file host, streaming server, and group daemon."""
 
-__version__ = "0.4.0"
+__version__ = "0.5.0"