chore: license MeshBay — LGPL protocol layer, AGPL for the rest

The protocol layer is LGPL-3.0-or-later in every language it exists in, so
any client may use it whatever its own licence: meshbay-common, and the files
marked with an SPDX line — keyderive.js, crypto.js, playlist-crypto.js,
transport*.js; keyring.js, transcripts.js and argon2-wasm.js on the desktop;
Kdf.kt, Keyring.kt and Transcripts.kt on Android. Everything else is
AGPL-3.0-or-later, which the RPM specs and package.json already declared
without a licence file to back them.

Two AGPL section 7 permissions:
- group applications may be under any licence when they use the interface
  only through a named surface (static/licenses/APPLICATION-EXCEPTION.txt);
  the reference application is 0BSD so that copying it brings no AGPL code;
- the Android application may be conveyed linked with Google Play services.

Third-party code is accounted for: THIRD-PARTY-NOTICES.txt is generated from
what a build ships (packaging/third_party_notices.py) for the deb/rpm venv and
the frozen Windows node — PyAV's wheel grafts in libx264 and libx265, which its
BSD licence does not mention — and the vendored browser libraries get their
licence texts and htm-preact.js its provenance. Wheels carry SPDX metadata,
RPMs %license, debs a DEP-5 copyright file, every Windows target LICENSE.txt.

test_licensing.py holds the line: the LGPL layer imports nothing under the
AGPL, the reference application nothing outside the application interface,
and every SPDX line is one of the known ones.

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

1 files changed, 3 insertions, 1 deletions

diff --git a/packaging/rpm/meshbay-client.spec b/packaging/rpm/meshbay-client.spec
index 0816741..e4f9f03 100644
--- a/packaging/rpm/meshbay-client.spec
+++ b/packaging/rpm/meshbay-client.spec
@@ -2,7 +2,7 @@ Name:           meshbay-client
 Version:        __VERSION__
 Release:        1%{?dist}
 Summary:        MeshBay — peer-to-peer file sharing, streaming and group chat
-License:        AGPLv3+
+License:        AGPL-3.0-or-later
 URL:            https://meshbay.org
 
 AutoReqProv:    no
@@ -35,6 +35,7 @@ launcher named "MeshBay".
 
 %install
 cp -a %{_staging_root}/* %{buildroot}/
+install -Dm644 -t %{buildroot}%{_licensedir}/%{name} %{_repo_root}/LICENSE
 
 %post
 if [ -f /opt/meshbay-client/chrome-sandbox ]; then
@@ -49,6 +50,7 @@ update-desktop-database /usr/share/applications 2>/dev/null || true
 gtk-update-icon-cache -f -t /usr/share/icons/hicolor 2>/dev/null || true
 
 %files
+%license %{_licensedir}/%{name}
 /opt/meshbay-client
 /usr/bin/meshbay
 /usr/share/applications/meshbay.desktop