Final chapter of the executive redesign. Renders the
team_project_activity context as a pivot: rows=teams, columns=projects,
cell=COUNT(DISTINCT work-log dates). Zero cells show em-dashes in muted
grey (not '0') so non-zero cells stand out. Row totals, column totals,
and grand total on the bottom row.
Adds a tiny dictlookup template filter (format_tags.py) — Django
templates can't index a dict by a dynamic variable key, and the pivot
cell lookup is cells_by_project_id[col.id]. Defensive None + TypeError
guards so a malformed context can't 500 the page.
.table-total-row CSS: 2px top border + inset background for the footer
row so totals visually separate from the data rows.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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