Fix perp manual order watch_entry bug; slim dialog UI; nav shows 永期/期期.

Manual market_order was validated as watch (missing watch_entry=0). Collapse order calc into details, remove page head card, show mode name in nav.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/instance/instance_display_prefs_lib.py

@@ -44,7 +44,7 @@ DISPLAY_LABELS: dict[str, str] = {
     "show_nav_env_config": "env配置",
     "show_nav_options": "期权",
     "show_nav_options_review": "期权复盘",
-    "show_nav_hedge_plan": "对冲计划",
+    "show_nav_hedge_plan": "永期/期期对冲",
     "show_settings_transfer": "资金划转",
     "show_settings_export": "数据导出",
     "show_settings_password": "账户密码修改",