/as:invoice

Before acting, read the host contract, this component's declaration (skill:invoice), and applicable workspace semantics. Load only the required modes from the shared catalog.

Use the host adapter and native context procedure. The harness performs the semantic operations below using its available native tools; ordinary task-specific code is allowed. No Arch Studio runtime, installer, bridge, supplied script or source checkout is required. Direct skill invocation is valid. Existing exact authorization persists; ask only for material missing facts or unavailable access.

Own INVOICES.csv; invoice documents are registered through receive with kind invoice. No agreement is required: amounts and currency may come from confirmed terms in PROJECT.md's Agreement section or explicit user input. Never infer billability, payment, hours or completion from task/time/activity signals.

Before changing records

Before persistent changes, follow the native mutation sequence: Inspect → Prepare → Verify preparation → Apply → Verify result → Complete. Inspect pending work first. Finish and verify preparation before the first canonical write: separately reread every saved original and prepared file, check its complete actual bytes, establish durable saving, and inspect actual permissions, ownership and ACLs. Merely writing recovery files does not finish verification. Apply only that verified set. Mark complete only after fresh readback validates the entire affected result and its relationships. Read-only requests and inline drafts need no publication sequence.

Ledger append/lifecycle changes affect the complete INVOICES.csv only; guard any cited invoice document or Agreement evidence without editing it. Invoice-document creation/registration is a separate authorized document-plus-DOCUMENTS.csv operation. A next-ID preview is read-only and does not reserve identity.

Use invoice.status to list preserved rows and separate totals by currency. invoice.allocate reports the next permanent I-number without reserving it; append allocates against the actual current register. invoice.init reports the fresh setup register without replacing it.

For invoice.append, preview invoice number, billing period, currency, base, expenses, total, explicit sent/paid dates/status, correction target and optional registered invoice document ID. Decimal arithmetic must reconcile base + expenses = total. Preserve malformed registers; do not guess missing amounts or silently reuse an invoice number. Corrections append distinct rows referencing the original; do not erase its history or silently net correction totals.