Returns a paginated list of inventory items for the clinic associated with your API key. ### Clinic-Scoped Unlike patients and medical records, inventory is **clinic-specific** — each clinic maintains its own stock. The `clinic_fp` is inferred from your API key and never accepted as a parameter. ### Pricing & Currency - `unit_price_cents` is an integer in the smallest currency unit (e.g. kurus for TRY, cents for USD). Divide by 100 for display. - `currency` uses ISO 4217 codes. Clinics may operate in TRY, USD, EUR, or GBP. ### Virtual Items `is_virtual: true` marks items that don't track physical stock — consultation fees, procedures, service charges. Stock operations (reserve, decrement, return) fail silently on virtual items. ### Stock Allocation Strategy When items are consumed through sales or treatments, allocation follows: - **Medications & vaccines:** FEFO (First Expiry, First Out) — batches with nearest `expiry_date` used first - **Other categories:** FIFO (First In, First Out) — oldest batches first