v0.4.1: launcher scripts (run.sh / run.command / run.bat)

First run needs the CLI to install the MITM CA into the system trust
store (sudo/admin prompt), which the UI alone can't do reliably from a
double-click. Add a small launcher for each platform that runs the CLI
with --install-cert once, then starts the UI. Each release archive now
contains a run.* script alongside the binaries.

assets/launchers/run.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+# mhrv-rs launcher for Linux / macOS.
+# Runs the CLI once (initializes the MITM CA in the user data dir and installs
+# it into the system trust store; may prompt for sudo), then launches the UI.
+set -eu
+
+DIR="$(cd "$(dirname "$0")" && pwd)"
+CLI="$DIR/mhrv-rs"
+UI="$DIR/mhrv-rs-ui"
+
+if [ ! -x "$CLI" ]; then
+    echo "error: $CLI not found or not executable" >&2
+    exit 1
+fi
+
+echo "Initializing MITM CA (you may be asked for your password)..."
+"$CLI" --install-cert || echo "warning: CA install returned non-zero; the UI can still run, but HTTPS sites may show cert errors until the CA is trusted."
+
+if [ ! -x "$UI" ]; then
+    echo "UI binary not found. Starting CLI proxy instead."
+    exec "$CLI"
+fi
+
+echo "Starting mhrv-rs UI..."
+exec "$UI"