Create a new local project. Use a lowercase, non-sensitive project_id.

Record sourced evidence locally; this performs no upload.

evidence_type must be document, measurement, note, photo, receipt, sketch, or voice_transcript. publication_status must be private, synthetic, or permission_cleared.

Read the complete local project record.

Calculate rectangular area in square feet, including a stated waste factor.

Calculate cubic yards for a uniform rectangular pour; not engineering advice.

Calculate whole sheet count with explicit sheet dimensions and waste.

Calculate whole stock pieces for a linear requirement.

Save a draft daily log with worker identifier, role, and hours entries.

Save an auditable draft estimate; never send, approve, or accept it.

Each line item requires description, quantity, unit, and unit_cost, with an optional evidence_ids array.

Save a draft change order with structured lines and an approval gate.