refactor(startup): simplify stack to Tauri-managed OpenFang + optional ChromeDriver

- Remove OpenFang CLI dependency from startup scripts
- OpenFang now bundled with Tauri and managed via gateway_start/gateway_status commands
- Add bootstrap screen in App.tsx to auto-start local gateway before UI loads
- Update Makefile: replace start-no-gateway with start-desktop-only
- Fix gateway config endpoints: use /api/config instead of /api/config/quick
- Add Playwright dependencies for future E2E testing

start.sh

@@ -1,7 +1,13 @@
 #!/bin/bash
 
 # ZCLAW Unified Start Script for macOS/Linux
-# Usage: ./start.sh [--no-browser] [--no-gateway] [--dev] [--help]
+# Starts: ChromeDriver (optional) -> Tauri Desktop (manages OpenFang internally)
+#
+# NOTE: OpenFang is bundled with Tauri and managed internally.
+# The frontend uses Tauri commands (gateway_start/gateway_status) to control OpenFang.
+# No external OpenFang CLI installation is required.
+#
+# Usage: ./start.sh [--no-browser] [--dev] [--help]
 
 set -e
 
@@ -15,7 +21,6 @@ NC='\033[0m' # No Color
 
 # Parse arguments
 NO_BROWSER=false
-NO_GATEWAY=false
 DEV_MODE=false
 
 while [[ $# -gt 0 ]]; do
@@ -24,10 +29,6 @@ while [[ $# -gt 0 ]]; do
             NO_BROWSER=true
             shift
             ;;
-        --no-gateway|-ng)
-            NO_GATEWAY=true
-            shift
-            ;;
         --dev|-d)
             DEV_MODE=true
             shift
@@ -39,10 +40,13 @@ while [[ $# -gt 0 ]]; do
             echo ""
             echo "Options:"
             echo "  --no-browser, -nb    Skip starting ChromeDriver"
-            echo "  --no-gateway, -ng    Skip starting OpenFang gateway"
             echo "  --dev, -d            Start in development mode"
             echo "  --help, -h           Show this help message"
             echo ""
+            echo "Note:"
+            echo "  OpenFang is bundled with the Tauri app and managed internally."
+            echo "  No external OpenFang CLI installation required."
+            echo ""
             echo "Examples:"
             echo "  ./start.sh                  # Start all services"
             echo "  ./start.sh --no-browser     # Start without ChromeDriver"
@@ -73,7 +77,7 @@ trap cleanup EXIT INT TERM
 
 echo ""
 echo -e "${MAGENTA}═══════════════════════════════════════════${NC}"
-echo -e "${MAGENTA}   🦞 ZCLAW - OpenFang Desktop Client${NC}"
+echo -e "${MAGENTA}   ZCLAW - OpenFang Desktop Client${NC}"
 echo -e "${MAGENTA}═══════════════════════════════════════════${NC}"
 echo ""
 
@@ -110,49 +114,16 @@ fi
 
 echo ""
 
-# 2. Check OpenFang Gateway
-if [ "$NO_GATEWAY" = false ]; then
-    echo -e "${CYAN}[INFO]${NC} Checking OpenFang Gateway..."
+# 2. Check OpenFang Runtime
+echo -e "${CYAN}[INFO]${NC} Checking OpenFang runtime..."
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+RUNTIME_PATH="$SCRIPT_DIR/desktop/src-tauri/resources/openfang-runtime"
 
-    GATEWAY_RUNNING=false
-
-    # Check if gateway is already running
-    if curl -s --connect-timeout 2 http://127.0.0.1:4200/health > /dev/null 2>&1; then
-        GATEWAY_RUNNING=true
-        echo -e "${GREEN}[OK]${NC} OpenFang Gateway already running on port 4200"
-    fi
-
-    if [ "$GATEWAY_RUNNING" = false ]; then
-        if command -v openfang &> /dev/null; then
-            echo -e "${CYAN}[INFO]${NC} Starting OpenFang Gateway..."
-            openfang gateway start &
-            PIDS+=($!)
-
-            echo -e "${CYAN}[INFO]${NC} Waiting for gateway to be ready..."
-            MAX_WAIT=30
-            WAITED=0
-
-            while [ $WAITED -lt $MAX_WAIT ]; do
-                if curl -s --connect-timeout 1 http://127.0.0.1:4200/health > /dev/null 2>&1; then
-                    echo -e "${GREEN}[OK]${NC} OpenFang Gateway started on port 4200"
-                    break
-                fi
-                sleep 1
-                WAITED=$((WAITED + 1))
-                printf "."
-            done
-            echo ""
-
-            if [ $WAITED -ge $MAX_WAIT ]; then
-                echo -e "${YELLOW}[WARN]${NC} Gateway did not respond within ${MAX_WAIT}s"
-            fi
-        else
-            echo -e "${YELLOW}[WARN]${NC} OpenFang CLI not found. Gateway not started."
-            echo -e "${CYAN}[INFO]${NC} Install OpenFang: https://github.com/openfang/openfang"
-        fi
-    fi
+if [ -f "$RUNTIME_PATH/openfang" ] || [ -f "$RUNTIME_PATH/openfang-x86_64-unknown-linux-gnu" ] || [ -f "$RUNTIME_PATH/openfang-aarch64-apple-darwin" ]; then
+    echo -e "${GREEN}[OK]${NC} OpenFang runtime found (bundled)"
 else
-    echo -e "${CYAN}[INFO]${NC} Skipping OpenFang Gateway (--no-gateway)"
+    echo -e "${YELLOW}[WARN]${NC} OpenFang runtime not found at $RUNTIME_PATH"
+    echo -e "${CYAN}[INFO]${NC} Run: cd desktop && pnpm prepare:openfang-runtime"
 fi
 
 echo ""
@@ -163,6 +134,7 @@ cd desktop
 
 if [ "$DEV_MODE" = true ]; then
     echo -e "${CYAN}[INFO]${NC} Starting in development mode..."
+    echo -e "${CYAN}[INFO]${NC} OpenFang will be started by the app via Tauri commands"
     pnpm tauri dev
 else
     # Check if built version exists