Add browser-based web MVP with mobile upload flow

start_web.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# PDF zu ICS Web-MVP starten (Linux/macOS)
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd "$SCRIPT_DIR"
+
+PYTHON_CMD=""
+if command -v python3 &> /dev/null; then
+    PYTHON_CMD="python3"
+elif command -v python &> /dev/null; then
+    PYTHON_CMD="python"
+else
+    echo "❌ Fehler: Python nicht gefunden!"
+    exit 1
+fi
+
+if [ ! -d ".venv" ]; then
+    echo "📦 Python-Umgebung wird eingerichtet..."
+    $PYTHON_CMD -m venv .venv --upgrade-deps || exit 1
+fi
+
+PYTHON_VENV=".venv/bin/python"
+
+if ! $PYTHON_VENV -c "import fastapi" 2>/dev/null; then
+    echo "📚 Installiere Web-Abhängigkeiten..."
+    $PYTHON_VENV -m pip install -q -r web/requirements-web.txt || exit 1
+fi
+
+echo "🌐 Starte Web-App auf http://0.0.0.0:8000"
+exec $PYTHON_VENV -m uvicorn web.app:app --host 0.0.0.0 --port 8000