<skill_overview> <purpose>Make progress measurable and remove ambiguity about what "done" means.</purpose> <triggers> <trigger>You need to verify outcomes of milestones/features</trigger> <trigger>The plan is vague ("do X") without a verification method</trigger> </triggers> </skill_overview>

<rules> <rule>No percent-complete. Only done/not done.</rule> <rule>Acceptance criteria describe behavior, not implementation.</rule> <rule>1 task = 1-3 acceptance criteria (no more).</rule> </rules> <formats> <format name="given-when-then"> <template>Given [context], when [action], then [expected result].</template> </format> <format name="checklist"> <template> - Input: ... - Action: ... - Expectation: ... - Negative case: ... </template> </format> </formats> <examples> <example name="good"> <criteria> <item>Given an empty form, when I click "Save", then I see a validation error and nothing is saved.</item> <item>Given valid input, when I click "Save", then I see a confirmation and the record appears in the list.</item> </criteria> </example> <example name="bad"> <criteria> <item>"Saving should work"</item> </criteria> </example> </examples>