Stage 2 of 4. Read the project prerequisites before starting; this stage builds on the preceding contracts.
What changes
An action list is operational data. Reject impossible calendar dates rather than accepting a shape that merely resembles a date. A missing owner or date is not a parser crash; it is a review flag.
Use the literal ? marker for unknown fields. This keeps uncertainty visible in structured output. Date parsing uses ISO calendar dates without inventing a timezone for all-day commitments.
Require source citations to be a nonempty list of positive integers. Reject booleans even though Python treats them as integers. Invalid or missing citations cannot become trustworthy evidence in the published checklist.
Work through one concrete case
2026-02-30 has the right digit pattern but is not a calendar date. The marker ? means a missing commitment field and creates needs_date or needs_owner instead of guessing a value.
pj meeting notes to actions 2
Change the lab inputs and calculate the result before reading its metrics. The figure computes from those inputs; the implementation tests below remain the source of completion evidence.
Implement the contract
Implement validate_action against the stated contract.
Use the public API contract and the typed starter signatures. Return values from core functions and let the supplied driver own file input, argument parsing and presentation.
Parse dates with date.fromisoformat after enforcing the intended ISO shape. Validate source lines as positive integers and explicitly reject bool, empty lists and HTML-like values.
Verify and inspect
From the repository root, initialize once with python3 scripts/project_test.py meeting-notes-to-actions --init learning-artifacts/meeting-notes-to-actions. Then grade cumulatively:
python3 scripts/project_test.py meeting-notes-to-actions --stage 2 --path learning-artifacts/meeting-notes-to-actions --strictA fresh workspace should fail until you implement the contract. After every stage is complete, run your actual artifact from the supplied sample:
cd learning-artifacts/meeting-notes-to-actions
python3 cli.py samples/notes.txt --today 2026-09-29 --output actions.json --html actions.html --csv approved.csvInvestigate the failure boundary
Try approving an action whose owner is?. The inbox must reject approval, leaving the incomplete commitment for review.