fix(tdd): add cross-reference to requirements.mdc

[ianwhitedeveloper]

Summary

• Adds an explicit callout in tdd.mdc directing agents to read and apply requirements.mdc before authoring given/should strings
• Placed immediately above the assert type definition — the highest-leverage intercept point
• Path reference follows the established project convention (bare filename, no ai/rules/ prefix)

Closes #127

Test plan

• All 183 unit tests pass
• Lint and typecheck clean
• Both ai/rules/tdd.mdc and .cursor/rules/tdd.mdc are in sync
• Cross-reference path style matches existing project conventions (requirements.mdc, not ai/rules/requirements.mdc)
• Reviewed by sub-agent — PASS

Made with Cursor

[orionnye]

Looks good

[ericelliott]

perhaps just import @requirements.mdc on a one-line constraint and mention that it should use them for given/should strings.

[janhesters]

@ianwhitedeveloper This branch is based on v2.6.0 (ee15c31) and carries the old ai/rules/ restructuring that has since been reverted on main. The ai/rules/ directory no longer exists on main — requirements.mdc is now at ai/skills/aidd-functional-requirements/SKILL.md.

This branch needs to be rebased onto current main and the cross-reference fix applied to the current skill structure (i.e., ai/skills/aidd-tdd/SKILL.md referencing ai/skills/aidd-functional-requirements/SKILL.md).