feat(dashboard): add milestone view and configurable columns

fixes #16, fixes #19

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/test_cli.py

@@ -26,9 +26,10 @@ class TestMainNominal:
 
         mock_client_cls.assert_called_once_with("http://localhost:3000", "test-token-123")
         mock_collect.assert_called_once_with(mock_client, include=None, exclude=None)
-        mock_render.assert_called_once_with(
-            mock_collect.return_value, sort_key="name", show_description=True
-        )
+        mock_render.assert_called_once()
+        call_kwargs = mock_render.call_args
+        assert call_kwargs[1]["sort_key"] == "name"
+        assert call_kwargs[1]["show_description"] is True
 
     @patch("gitea_dashboard.cli.render_dashboard")
     @patch("gitea_dashboard.cli.collect_all")
@@ -365,9 +366,10 @@ class TestMainNoDesc:
         with patch.dict("os.environ", env, clear=True):
             main(["--no-desc"])
 
-        mock_render.assert_called_once_with(
-            mock_collect.return_value, sort_key="name", show_description=False
-        )
+        mock_render.assert_called_once()
+        call_kwargs = mock_render.call_args
+        assert call_kwargs[1]["sort_key"] == "name"
+        assert call_kwargs[1]["show_description"] is False
 
 
 class TestMainFormatJson:
@@ -472,7 +474,7 @@ class TestMainColumnsHelp:
         mock_collect.return_value = []
 
         with patch.dict("os.environ", env, clear=True):
-            main(["--no-desc", "--columns", "-commit"])
+            main(["--no-desc", "--columns=-commit"])
 
         # render_dashboard should be called with columns excluding both description and commit
         call_kwargs = mock_render.call_args

tests/test_display.py

@@ -2,6 +2,7 @@
 
 from io import StringIO
 
+import pytest
 from rich.console import Console
 
 from gitea_dashboard.display import (