Implements the approved mockup from the UX debate report:
- new DisplayRow::TodoHeader variant: collapsible group headers, toggled
by Enter/Space, tracked in HubState.todo_group_collapsed
- [g] cycles grouping: status (default) -> project -> repo -> none
- [s] cycles which statuses are included before grouping: active
(open+in-progress, default) -> open -> done -> all
- table: dropped SRC/EST (near-always empty), code-scan todos show a dim
'no status icon' marker instead of a separate source column, project
name colored by the project's own color (was DarkGray, wasting the most
useful visual identifier in the tool), age now tracks updated_at not
created_at ('what's moving' beats 'what's old')
- right panel: added Repo/Difficulty/Estimate, previously only visible in
the table despite the panel having more room for them
- block title shows live counts + current view/group/code-scan state
Simplified vs. the literal ASCII mockup: [s] filters the underlying set
before grouping, so e.g. the default 'active' view omits Done/Cancelled
groups entirely rather than always showing them collapsed - a simpler,
more internally consistent model. Flagged for foksiu to request the exact
mockup behavior if he wants it.
Verified via pyte: group/status-view cycling, collapse/expand (arrow flips
and child rows appear/disappear), right panel on header vs. todo row.
dualfroz
6adc22d665