How do I push forecasts back into Magento’s admin?

Three patterns, in order of complexity. (1) Custom admin block reading from a panth_forecast table, cleanest. The Python sidecar UPSERTs predictions per (sku, ds); a Magento block renders the next 30 days on the product-edit page. (2) REST API push to POST /V1/inventory/source-items, updates a recommended-quantity field on the MSI source. Works for multi-source inventory. (3) Webhook into a custom controller, the sidecar POSTs HMAC-signed batches; a controller validates and writes via the repository pattern. Pick (1) for stores under $5M GMV, (2) for $5-50M with MSI, (3) for enterprises with a real eventing platform.