feat: enhance color handling in templates and dashboard with hex support

tests/test_dashboard.py

@@ -72,6 +72,8 @@ def test_admin_get_renders_template_form(monkeypatch):
     assert "Admin: templates" in body
     assert "name='420__text'" in body
     assert "name='420__color'" in body
+    assert "name='420__color_picker'" in body
+    assert "type='color'" in body
     assert "name='420__image_url'" in body
 
 

tests/test_templates.py

@@ -20,6 +20,9 @@ def test_save_and_load_templates_roundtrip(tmp_path):
     }
     save_templates(path, data)
 
+    raw = path.read_text(encoding="utf-8")
+    assert '"color": "#00007B"' in raw
+
     loaded = load_templates(path)
     assert loaded["420"]["text"] == "Custom"
     assert loaded["420"]["color"] == 123