Pure renderer logic for the 5-col kanban view.
- formatAge: m/h/d/w/mo/y with calendar-month arithmetic
- partitionByStatus: canonical 5-col order
- renderBoard: 5 columns, cards with data-slug/data-raw-url/data-archived,
HTML-escaped fields, JSON embed escaped via \uXXXX (XSS-safe)
- archived flag: done > 14d hidden by default (toggle visible)
- align task acceptance emoji set to ⚪🔴🟡🔵🟢
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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