chore: add launch.sh for .desktop entry

Runs `tauri dev` so Vite dev server starts before the WebView binary.
Builds sidecar runners on first launch if missing.

scripts/launch.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+# Launch Agent Orchestrator — used by .desktop entry
+set -euo pipefail
+
+PROJECT_DIR="/home/bartek/workspace/agent_orchestrator"
+
+cd "$PROJECT_DIR"
+
+# Build sidecar if missing
+if [ ! -f "$PROJECT_DIR/sidecar/dist/claude-runner.mjs" ]; then
+  npm run build:sidecar
+fi
+
+export WEBKIT_DISABLE_DMABUF_RENDERER=1
+exec npm run tauri dev