优化 Runtime 安装进度体验

- 状态栏与窗口强制刷新，进度更新无需移动鼠标即可实时显示
- 安装过程拆分为 12 个阶段，每段进度从 0 到 100%
- 安装阶段解析 uv 下载事件推进进度，模型下载阶段实时反映字节进度

tests/test_addon.py

@@ -510,6 +510,46 @@ class AddonTest(unittest.TestCase):
         self.assertNotIn("DA3 image depth", starting_source)
         self.assertNotIn("DA3 depth plane", finish_source)
 
+    def test_update_status_formats_stage_progress(self):
+        operator = self.addon.RunJob()
+
+        self.assertEqual(
+            operator._format_status(
+                {
+                    "progress": 0.5,
+                    "message": "Downloaded 3 packages",
+                    "stage": 3,
+                    "stages": 12,
+                    "stage_label": "Install PyTorch",
+                },
+                "fallback",
+            ),
+            "Step 3/12 Install PyTorch: Downloaded 3 packages",
+        )
+        self.assertEqual(
+            operator._format_status(
+                {
+                    "progress": 0.0,
+                    "message": "",
+                    "stage": 10,
+                    "stages": 12,
+                    "stage_label": "Download DA3 Small",
+                },
+                "fallback",
+            ),
+            "Step 10/12 Download DA3 Small",
+        )
+        self.assertEqual(
+            operator._format_status(
+                {
+                    "progress": 0.5,
+                    "message": "Estimating depth",
+                },
+                "fallback",
+            ),
+            "Estimating depth",
+        )
+
     def test_depth_background_is_loaded_without_changing_source_empty(self):
         source = inspect.getsource(self.addon.RunJob._build_depth_plane)
 
@@ -1486,7 +1526,56 @@ class AddonTest(unittest.TestCase):
             ],
         )
 
-    def test_force_flag_does_not_trigger_window_draw_and_swap(self):
+    def test_force_flag_triggers_window_draw_and_swap(self):
+        redrawn = []
+        context = SimpleNamespace(
+            window_manager=SimpleNamespace(
+                windows=(
+                    SimpleNamespace(
+                        screen=SimpleNamespace(
+                            areas=(
+                                SimpleNamespace(
+                                    type="STATUSBAR",
+                                    tag_redraw=lambda: redrawn.append(
+                                        "status"
+                                    ),
+                                    regions=(),
+                                ),
+                            ),
+                        ),
+                    ),
+                ),
+            ),
+            workspace=SimpleNamespace(
+                status_text_set_internal=lambda _value: redrawn.append(
+                    "status-text"
+                ),
+            ),
+        )
+
+        with patch.object(
+            self.addon.status_bar.bpy,
+            "ops",
+            SimpleNamespace(
+                wm=SimpleNamespace(
+                    redraw_timer=lambda **options: redrawn.append(
+                        ("swap", options)
+                    ),
+                ),
+            ),
+        ):
+            self.addon.status_bar.redraw_ui(context, force=True)
+
+        self.assertEqual(
+            redrawn,
+            [
+                "status",
+                ("swap", {"type": "DRAW_WIN_SWAP", "iterations": 1}),
+                "status-text",
+            ],
+        )
+
+    def test_force_flag_ignores_missing_redraw_helpers(self):
         redrawn = []
         context = SimpleNamespace(
             window_manager=SimpleNamespace(
@@ -1511,6 +1600,3 @@ class AddonTest(unittest.TestCase):
         self.addon.status_bar.redraw_ui(context, force=True)
 
         self.assertEqual(redrawn, ["status"])
-        source = inspect.getsource(self.addon.status_bar)
-        self.assertNotIn("redraw_timer", source)
-        self.assertNotIn("DRAW_WIN_SWAP", source)