fix: 启动脚本绑定 venv Python + 缺依赖自动安装

- start.bat: 改用 .venv\Scripts\python.exe，缺依赖时自动 pip install
- start.sh: 优先 .venv/bin/python3，fallback 到系统 python3/python
- 两个脚本均不再依赖 uv，使用标准 python -m venv + pip

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

start.sh

@@ -6,11 +6,22 @@ set -e
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 cd "$SCRIPT_DIR"
 
+# ── Python 路径: 优先 venv ──
+if [ -f "$SCRIPT_DIR/.venv/bin/python3" ]; then
+    PYTHON="$SCRIPT_DIR/.venv/bin/python3"
+elif [ -f "$SCRIPT_DIR/.venv/bin/python" ]; then
+    PYTHON="$SCRIPT_DIR/.venv/bin/python"
+elif command -v python3 &>/dev/null; then
+    PYTHON="python3"
+else
+    PYTHON="python"
+fi
+
 # ── 颜色 ──
 RED='\033[31m'; GREEN='\033[32m'; YELLOW='\033[33m'; NC='\033[0m'
 pass=0; fail=0
 check() {
-    if command -v "$1" &>/dev/null || python3 -c "$2" 2>/dev/null; then
+    if command -v "$1" &>/dev/null || "$PYTHON" -c "$2" 2>/dev/null; then
         echo -e "  ${GREEN}✓${NC} $3"
         pass=$((pass+1))
     else
@@ -23,8 +34,8 @@ echo "🐱 SenSu 依赖检测..."
 echo ""
 
 # ── 系统依赖 ──
-check "python3" "" "Python 3.11+"
-python3 -c "import sys; assert sys.version_info >= (3,11)" 2>/dev/null || {
+check "" "" "Python 3.11+"
+"$PYTHON" -c "import sys; assert sys.version_info >= (3,11)" 2>/dev/null || {
     echo -e "  ${YELLOW}⚠ Python 版本过低，需要 3.11+${NC}"
     fail=$((fail+1))
 }
@@ -36,6 +47,7 @@ check "" "import textual" "Textual (TUI)"
 check "" "import watchdog" "watchdog (热重载)"
 check "" "import psutil" "psutil (系统监控)"
 check "" "import rich" "rich (终端美化)"
+check "" "import websockets" "websockets (WebSocket)"
 
 # ── 配置文件 ──
 if [ -f "config/framework/base_config.yaml" ]; then
@@ -52,8 +64,13 @@ fi
 
 echo ""
 if [ "$fail" -gt 0 ]; then
-    echo -e "${RED}❌ $fail 项缺失，请先安装: pip install -r requirements.txt${NC}"
-    exit 1
+    echo -e "${YELLOW}⚠ $fail 项缺失，自动安装...${NC}"
+    "$PYTHON" -m pip install -r requirements.txt
+    if [ $? -ne 0 ]; then
+        echo -e "${RED}❌ 安装失败，请手动执行: python3 -m venv .venv && source .venv/bin/activate && pip install -r requirements.txt${NC}"
+        exit 1
+    fi
+    echo -e "${GREEN}✅ 依赖安装完成${NC}"
 fi
 
 echo -e "${GREEN}✅ 所有依赖就绪 ($pass 项)${NC}"
@@ -62,4 +79,4 @@ echo "🚀 启动 SenSu (无头模式)..."
 echo "   Web 面板: http://0.0.0.0:4200/SenSu"
 echo ""
 
-python3 main.py --headless
+"$PYTHON" main.py --headless