Prefer Chromium for turnstilePatch on headless servers

Google Chrome blocks --load-extension, so CF tokens stay empty under
Xvfb. Auto-select Chromium when the extension is present, install/
detect chromium in start.sh, and document browser_prefer overrides.

start.sh

@@ -339,33 +339,58 @@ step3_sync_deps() {
 step4_check_browser() {
     echo -e "${CYAN}[4/6] 检测/安装浏览器...${NC}"
 
+    # Prefer Chromium for turnstilePatch (--load-extension works).
+    # Google Chrome alone often leaves CF token=0 on Xvfb servers.
     local candidate
+    local found_chromium=""
+    local found_chrome=""
     for candidate in \
-        google-chrome-stable google-chrome chromium chromium-browser \
+        chromium chromium-browser \
+        /usr/bin/chromium /usr/bin/chromium-browser /snap/bin/chromium; do
+        if have_cmd "$candidate" || [ -x "$candidate" ] 2>/dev/null; then
+            found_chromium="$(command -v "$candidate" 2>/dev/null || echo "$candidate")"
+            break
+        fi
+    done
+    for candidate in \
+        google-chrome-stable google-chrome \
         /usr/bin/google-chrome-stable /usr/bin/google-chrome \
-        /snap/bin/chromium /usr/bin/chromium /usr/bin/chromium-browser \
         "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"; do
         if have_cmd "$candidate" || [ -x "$candidate" ] 2>/dev/null; then
-            echo -e "  ${GREEN}✓${NC} 浏览器: $(command -v "$candidate" 2>/dev/null || echo "$candidate")"
-            return 0
+            found_chrome="$(command -v "$candidate" 2>/dev/null || echo "$candidate")"
+            break
         fi
     done
 
-    echo -e "  ${YELLOW}⚠${NC} 未检测到 Chrome/Chromium，尝试自动安装..."
+    if [ -n "$found_chromium" ]; then
+        echo -e "  ${GREEN}✓${NC} Chromium: $found_chromium （可加载 turnstilePatch）"
+        if [ -n "$found_chrome" ]; then
+            echo -e "  ${CYAN}·${NC} 另检测到 Chrome: $found_chrome（注册默认优先 Chromium）"
+        fi
+        return 0
+    fi
+
+    if [ -n "$found_chrome" ]; then
+        echo -e "  ${YELLOW}⚠${NC} 仅有 Google Chrome: $found_chrome"
+        echo "    Chrome 无法加载 turnstilePatch，Turnstile 容易 token=0。"
+        echo "    将尝试安装 Chromium..."
+    else
+        echo -e "  ${YELLOW}⚠${NC} 未检测到 Chrome/Chromium，尝试自动安装 Chromium..."
+    fi
 
     local installed=false
 
-    # Debian/Ubuntu
+    # Debian/Ubuntu — prefer chromium (extension support)
     if have_cmd apt-get; then
         if have_cmd sudo; then
             if sudo -n true 2>/dev/null; then
                 echo "  → 使用 apt 安装 chromium（免密 sudo）..."
-                if sudo apt-get update -qq && sudo DEBIAN_FRONTEND=noninteractive apt-get install -y -qq chromium-browser chromium 2>/dev/null; then
+                if sudo apt-get update -qq && sudo DEBIAN_FRONTEND=noninteractive apt-get install -y -qq chromium chromium-browser 2>/dev/null; then
                     installed=true
                 fi
             else
                 echo -e "  ${YELLOW}⚠${NC} 检测到 apt，但需要交互 sudo，跳过自动安装浏览器"
-                echo "    可手动: sudo apt install -y chromium-browser"
+                echo "    可手动: sudo apt install -y chromium"
             fi
         fi
     # Arch
@@ -388,23 +413,35 @@ step4_check_browser() {
         else
             echo "    可手动: sudo dnf install -y chromium"
         fi
-    # macOS Homebrew
+    # macOS Homebrew — chromium cask if available, else chrome
     elif have_cmd brew; then
-        echo "  → 使用 Homebrew 安装 Google Chrome..."
-        if brew install --cask google-chrome 2>/dev/null; then
+        echo "  → 使用 Homebrew 安装 chromium / chrome..."
+        if brew install --cask chromium 2>/dev/null || brew install --cask google-chrome 2>/dev/null; then
             installed=true
         fi
     fi
 
-    # 再检测一次
+    # 再检测一次（Chromium 优先）
     for candidate in \
-        google-chrome-stable google-chrome chromium chromium-browser \
+        chromium chromium-browser \
+        /usr/bin/chromium /usr/bin/chromium-browser /snap/bin/chromium \
+        google-chrome-stable google-chrome \
         /usr/bin/google-chrome-stable /usr/bin/google-chrome \
-        /snap/bin/chromium /usr/bin/chromium /usr/bin/chromium-browser \
         "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"; do
         if have_cmd "$candidate" || [ -x "$candidate" ] 2>/dev/null; then
-            echo -e "  ${GREEN}✓${NC} 浏览器已就绪: $(command -v "$candidate" 2>/dev/null || echo "$candidate")"
-            return 0
+            local resolved
+            resolved="$(command -v "$candidate" 2>/dev/null || echo "$candidate")"
+            case "$resolved" in
+                *chromium*)
+                    echo -e "  ${GREEN}✓${NC} 浏览器已就绪 (Chromium): $resolved"
+                    return 0
+                    ;;
+                *)
+                    echo -e "  ${YELLOW}⚠${NC} 仅有 Chrome: $resolved"
+                    echo "    注册机将用 CDP stealth；过 CF 仍建议: sudo apt install -y chromium"
+                    return 0
+                    ;;
+            esac
         fi
     done
 
@@ -412,12 +449,12 @@ step4_check_browser() {
         echo -e "  ${YELLOW}⚠${NC} 安装命令已执行，但仍未在 PATH 中找到浏览器，请重启终端后重试"
     else
         echo -e "  ${YELLOW}⚠${NC} 未能自动安装浏览器"
-        echo "  DrissionPage 需要 Chrome/Chromium；协议 mint 不强制浏览器，回退流程需要。"
+        echo "  注册需要 Chromium（推荐，可加载 turnstilePatch）或 Chrome。"
         echo "  手动安装示例:"
-        echo "    Ubuntu/Debian: sudo apt install -y chromium-browser"
+        echo "    Ubuntu/Debian: sudo apt install -y chromium"
         echo "    Arch:          sudo pacman -S chromium"
-        echo "    macOS:         brew install --cask google-chrome"
-        echo "  ${YELLOW}脚本将继续，注册可能因缺少浏览器而失败。${NC}"
+        echo "    macOS:         brew install --cask chromium"
+        echo "  ${YELLOW}脚本将继续，注册可能因缺少浏览器 / Turnstile 失败。${NC}"
     fi
 }