Three pills under the header: date range, project(s), team(s). Shows
comma-joined names when multi-valued (project_name in context is
already a comma-joined string from Task 6). × buttons on the project
and team pills remove just that filter via a rebuilt querystring;
the calendar pill has no × (date range is required).
Helper context keys query_string_without_project / _without_team do
the rebuild in the view via QueryDict.setlist so multi-value keys
are properly stripped (pop() only removes the first occurrence).
Pill CSS uses existing design tokens (--bg-inset, --accent,
--text-primary, --border-default, --text-tertiary, --bg-card-hover)
so dark and light themes work without overrides.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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