lmcp: bump to v0.4.0 (edit_file tool)

Claude Code Edit semantics — literal string replace with uniqueness
check. replace_all flag for bulk edits. Fixes missing edit tool on
lmcp-backed boltzmann / tesla / broglie.

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=0.3.0
+pkgver=0.4.0
 pkgrel=1
 pkgdesc="Lightweight MCP (Model Context Protocol) server in pure Lua"
 arch=('any')
@@ -11,7 +11,7 @@ url="https://git.reauktion.de/marfrit/lmcp"
 license=('MIT')
 depends=('lua' 'lua-socket')
 source=("${pkgname}-${pkgver}.tar.gz::https://git.reauktion.de/marfrit/lmcp/archive/v${pkgver}.tar.gz")
-sha256sums=('80a37fc41633ae285b86f2f6cdd97f0c922c03022dce09addd47aeb379f2bcff')
+sha256sums=('d5312690114ee9ce94fbfb03f21b9b17adf74772f4e34137cbc08e34c270c211')
 
 package() {
     cd "${pkgname}"