Migrate TODO.md Into Kanban Cards

TODO.md holds fifteen ideas the board never sees.

Migrate TODO.md Into Kanban Cards

The documented workflow tracks work as a card in content/kanban/01-to-do/, and the specification documents render live views of those cards. TODO.md at the repository root sits outside both: fifteen unchecked ideas, plus the “Issues”, “Planning” and “Decisions” prose, none of which appears on the board or in any specification table. The ideation table in summary.md selects id cards, and the only one it finds, p1-id-initial-concept, is done.

Two of the entries are already this month’s work in disguise — a “hard stop” before the scaffolder is built and copied to the home folder, and loose time-tracking on cards — so they are cards, not ideas. The rest split by nature: id for open-ended ideas such as the monthly content-tightening skill, is for defects, ft for features, ts for test work.

Goals

• Turn every actionable entry into a card of the kind that fits it, created with hugo new content --kind <kind> and named p<priority>-<prefix>.
• Move the open questions (“should I make it an issue tracker”, “can AI write a good description”) to id cards at a low priority.
• Leave the methodology prose that belongs in a document — the ADR decisions, the top-level document that indexes every document — in content/specification/, where it is a document and not a task.
• Point TODO.md at the board, or remove the file once it is empty.

Acceptance Criteria

• No actionable entry remains in TODO.md.
• Every migrated entry validates against assets/kanban-card-front-matter.yaml and shows on the board.
• The summary.md tables list the migrated cards under their own kinds, and the kinds left empty stay empty on purpose.
• Nothing is dropped: each TODO.md line is either a card, a specification section, or explicitly abandoned in a note.
• pnpm run test:kanban passes.