feat: 优化任务状态与进度体验

tests/unit/test_template_filters.py

@@ -1,4 +1,4 @@
-from app.templating import from_json_filter, status_badge_config
+from app.templating import from_json_filter, progress_percent, rate_percent, status_badge_config
 
 
 def test_status_badge_config_centralizes_task_status_copy():
@@ -11,3 +11,15 @@ def test_status_badge_config_centralizes_task_status_copy():
 def test_from_json_filter_returns_empty_list_for_invalid_json():
     assert from_json_filter('["认可"]') == ["认可"]
     assert from_json_filter("bad-json") == []
+
+
+def test_progress_percent_clamps_invalid_and_overflow_values():
+    assert progress_percent(0, 0) == 0
+    assert progress_percent(1, 2) == 50
+    assert progress_percent(5, 2) == 100
+
+
+def test_rate_percent_formats_ai_success_rate():
+    assert rate_percent(None) == 0
+    assert rate_percent(0.754) == 75
+    assert rate_percent(2.0) == 100