feat(studio): 三维视图接入产品（阶段 4：界面、生命周期与记录隔离）

- What: `Scene3DView` 装配（widget/相机/渲染器/合成器/协调器/适配器），`asset_source`
  只查找并后台加载已编译的 `.oryscene` 包，`scene3d/prefs` 持久化并**修复**显示设置，
  `ui/mesh3d_panel` 用真实容器替换占位标签（无 GL/无包/包被拒/传感器不匹配各显示一行原因），
  `main.py` 在 `QApplication` 之前选定 GL profile，`app_window` 接线：3D 作为采集线程上的
  第二个 sink、`_on_run_tick` 驱动 `tick()`、视图切换与 `closeEvent` 释放、preferences 落盘。
- Why: 阶段 4 的验收要求"三维开关不影响采集/记录/力曲线"，并把阶段 1 留下的
  "开/关三维 CSV 一致"这条补上；同时把"没有 context"从"看起来像在工作"变成可显示的终态。
- Verification: app 侧 test_scene3d_view 28 项、test_scene3d_gl_smoke 14 项（真实 GPU）、
  adapters 17 项、skeleton 4 项、stage1 24 项、coordinator 13 项、ui_smoke 86 项；
  shared 侧 contract 26 / assets 33 / package 19 / live 25；`ui_check.py` 566 项检查 0 失败
  （新增 "3D pane" 段 12 项）；`locale_check.py` 302 个字面 key 0 缺失、中英各 377 key 对齐；
  记录隔离：同一 96 帧会话挂/不挂 3D 消费者，`forces.csv` 逐字节相同、有效样本数与记录问题数相同；
  生产者预算：合成器放慢到 50 ms 时 `submit_packet` p99 < 1 ms。
- Not in this change: 示意位移（`displacement_sensor_m`）仍未接入（需 SDK lift 与已确认尺度）；
  ARM 板卡适配（按用户要求暂缓）；包签名/AES-GCM 与长时性能报告（阶段 5）；
  仓库中仍未提供 `.oryscene` 包（发布产物，且其单位与变换必须由人声明）。

apps/studio/src/orisys_studio/main.py

@@ -21,6 +21,35 @@ from orisys_studio.app_window import StudioMainWindow
 
 logger = logging.getLogger(__name__)
 
+#: The GL profiles the 3D view can be started with. One per process: the surface
+#: format is a start-up decision, so it is read from the preferences here rather
+#: than switched at runtime (design document §11.1).
+GL_PROFILES = ("desktop33", "gles30")
+DEFAULT_GL_PROFILE = "desktop33"
+
+
+def _configure_gl(prefs: dict) -> str:
+    """Select the default GL surface format. Must run before ``QApplication``.
+
+    Optional and failure-tolerant on purpose: a machine without PyOpenGL, or with a
+    preference that names a profile this build does not know, still gets the whole
+    two-dimensional application. The 3D pane reports its own state; a start-up that
+    refused to run because a picture might not appear would be the worse bug.
+    """
+    profile = str(prefs.get("gl_profile") or DEFAULT_GL_PROFILE)
+    if profile not in GL_PROFILES:
+        logger.warning("Unknown gl_profile %r; using %s", profile, DEFAULT_GL_PROFILE)
+        profile = DEFAULT_GL_PROFILE
+    try:
+        from orisys_studio.scene3d.gl_backend import configure_surface_format
+
+        configure_surface_format(profile)  # type: ignore[arg-type]
+    except Exception:  # noqa: BLE001 - 3D is optional, the window is not
+        logger.exception("Could not configure the OpenGL surface format")
+        return profile
+    logger.info("OpenGL surface format requested: profile=%s", profile)
+    return profile
+
 
 def main() -> int:
     init_logging("orisys-studio")
@@ -41,6 +70,7 @@ def main() -> int:
     language = str(prefs.get("language") or "zh_CN")
     theme = str(prefs.get("theme") or "dark")
     set_locale(language)
+    gl_profile = _configure_gl(prefs)
 
     app = QApplication(sys.argv)
     app.setApplicationName("Orisys Studio")
@@ -49,7 +79,12 @@ def main() -> int:
 
     window = StudioMainWindow(prefs=prefs)
     window.show()
-    logger.info("Studio shell started (theme=%s, language=%s)", theme, language)
+    logger.info(
+        "Studio shell started (theme=%s, language=%s, gl_profile=%s)",
+        theme,
+        language,
+        gl_profile,
+    )
     code = int(app.exec_())
 
     # Leave the process immediately.