lmcp: 1.1.1 -> 1.2.1 (tools.d plugin scan + LMCP_HOST/LMCP_CONF env)

Tracks upstream lmcp v1.2.1 (commits e05438f + c5375b8). Combined
release that lets hosts like hertz/ampere stop maintaining forked
/opt/lmcp/server.lua overrides — packaged server.lua becomes the
canonical entrypoint, host-local tools live in /opt/lmcp/tools.d/
as plugin files, single-interface binding + conf-file auth come via
LMCP_HOST + LMCP_CONF systemd env. Closes lmcp#22 structurally.

New tarball sha256:
  bf9cce1a84c66b1b74c5aec923c5960d60ae33c221afc8d47ce0d74b8f7ee609

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

arch/lmcp/PKGBUILD

@@ -3,7 +3,7 @@
 # Source of truth: git.reauktion.de/marfrit/lmcp
 
 pkgname=lmcp
-pkgver=1.1.1
+pkgver=1.2.1
 pkgrel=1
 pkgdesc="Lightweight MCP (Model Context Protocol) server in pure Lua"
 arch=('any')
@@ -14,7 +14,7 @@ depends=('lua' 'lua-socket')
 # pre-release pkgvers (e.g. 1.2.0_rc1 → v1.2.0-rc1).
 _tag="v${pkgver//_/-}"
 source=("${pkgname}-${pkgver}.tar.gz::https://git.reauktion.de/marfrit/lmcp/archive/${_tag}.tar.gz")
-sha256sums=('80c2e815aa61a2d3baab051c51cd247bdefa9dd03d72c4867b99c49b6eae9cb9')
+sha256sums=('bf9cce1a84c66b1b74c5aec923c5960d60ae33c221afc8d47ce0d74b8f7ee609')
 
 package() {
     cd "${pkgname}"