chore: add RPM/DEB packaging artifacts — 5.10

3 packages: python3-meshbay-common (dep), meshbay-hub, meshbay-node.
RPM: spec files with pre/post scriptlets (useradd, systemd macros).
DEB: DEBIAN/control + postinst for hub, control for node + common.
Systemd: hub.service (system, security hardening) + node.service
(user template @%i, EnvironmentFile for MESHBAY_UNLOCK_KEY).
packaging/README.md: build + install instructions.

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/packaging/deb/python3-meshbay-common/DEBIAN/control b/packaging/deb/python3-meshbay-common/DEBIAN/control
new file mode 100644
index 0000000..ea35603
--- /dev/null
+++ b/packaging/deb/python3-meshbay-common/DEBIAN/control
@@ -0,0 +1,18 @@
+Package: python3-meshbay-common
+Version: 0.1.0
+Section: python
+Priority: optional
+Architecture: all
+Maintainer: MeshBay Team <team@meshbay.org>
+Homepage: https://meshbay.org
+Depends: python3 (>= 3.12),
+         python3-cryptography (>= 43.0),
+         python3-jwt,
+         python3-msgpack,
+         python3-zstandard
+Description: MeshBay shared cryptographic primitives and protocol types
+ Provides Ed25519/X25519 key operations, GEK wrap/unwrap (ECIES-like),
+ per-chunk HKDF key derivation, ChaCha20-Poly1305 encryption,
+ AES-256-GCM keystore encryption, and MNP protocol message types.
+ .
+ Required by both meshbay-hub and meshbay-node.