EARS/29148-style requirement records. Use one artifact per stable requirement or grouping requirement.

Required shape:

• title: is the canonical human-readable title used by graph, work-unit, and spec draft generation.
• ## Problem explains the user or system problem.
• ## Requirements is the normative source, with one [REQ-NNN] ... MUST/SHOULD/MAY ... clause per line.
• ## Scenarios supplies the work-unit and draft-spec BDD source.
• ## Dependencies declares ordering edges to other requirement ids.
• ## Open Questions blocks executable work-unit generation when it contains real questions.

Specs link back via satisfies:.