feat: Arch Linux packaging with Electron frontend, systemd backend service, and Windows exe build

- Add Electron wrapper (main.cjs, preload.cjs) for desktop frontend
- Add systemd service unit, env config, and sysusers for backend API
- Add PKGBUILD and .install for Arch package (makepkg -si)
- Add desktop entry, SVG/PNG icon, and wrapper scripts
- Add bin/build-pkg, bin/install-pkg, bin/windows-pkg scripts
- Make API port configurable via PORT env var (default 3000, prod 18390)
- Add electron-builder config for Windows exe cross-compilation
- Set vite base to './' for Electron file:// loading

1 files changed, 24 insertions, 0 deletions

diff --git a/packaging/dispatch.svg b/packaging/dispatch.svg
new file mode 100644
index 0000000..2aae97f
--- /dev/null
+++ b/packaging/dispatch.svg
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="64" height="64">
+  <defs>
+    <linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#5b6af0"/>
+      <stop offset="100%" style="stop-color:#9b59f7"/>
+    </linearGradient>
+    <linearGradient id="arrow" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#ffffff;stop-opacity:1"/>
+      <stop offset="100%" style="stop-color:#e0d8ff;stop-opacity:1"/>
+    </linearGradient>
+  </defs>
+
+  <!-- Rounded square background -->
+  <rect x="2" y="2" width="60" height="60" rx="14" ry="14" fill="url(#bg)"/>
+
+  <!-- Send/dispatch arrow icon: a paper-plane style arrow pointing upper-right -->
+  <!-- Main arrow body -->
+  <polygon points="10,50 54,10 38,32" fill="url(#arrow)" opacity="0.95"/>
+  <!-- Arrow tail fill -->
+  <polygon points="10,50 28,36 22,54" fill="url(#arrow)" opacity="0.75"/>
+  <!-- Subtle highlight line -->
+  <line x1="54" y1="10" x2="28" y2="36" stroke="white" stroke-width="1.5" stroke-linecap="round" opacity="0.5"/>
+</svg>