[ADD] Inventory: forecast report

Author: jero-odoo

content/applications/inventory_and_mrp/inventory/warehouses_storage/reporting.rst

@@ -7,6 +7,7 @@ Reporting
 .. toctree::
    :titlesonly:
 
+   reporting/forecast
    reporting/stock
    reporting/locations
    reporting/moves_history

content/applications/inventory_and_mrp/inventory/warehouses_storage/reporting/forecast.rst

@@ -0,0 +1,52 @@
+===============
+Forecast report
+===============
+
+.. |SO| replace:: :abbr:`SO (sales order)`
+.. |SOs| replace:: :abbr:`SOs (sales orders)`
+.. |RFQs| replace:: :abbr:`RFQs (Requests for Quotation)`
+.. |POs| replace:: :abbr:`POs (purchase orders)`
+.. |PO| replace:: :abbr:`PO (purchase order)`
+.. |MO| replace:: :abbr:`MO (manufacturing order)`
+.. |MOs| replace:: :abbr:`MOs (manufacturing orders)`
+
+The **Inventory** *forecast report* provides a real-time view of projected stock levels, helping
+businesses manage their inventory efficiently. This report is beneficial for planning and decision
+making, ensuring stock availability for upcoming sales, manufacturing, and replenishment activities.
+
+.. important::
+   The forecast report is **only** available on products where inventory is being tracked, commonly
+   referred to as a *storable product*.
+
+Navigating the forecast report
+==============================
+
+To access the report, click the :icon:`fa-area-chart` :guilabel:`Forecasted` smart button on a
+product form. Alternatively, the report can be access from a sales order (SO), by clicking on the
+:icon:`fa-area-chart` :guilabel:`(Graph)` icon next to the product, then selecting :guilabel:`View
+Forecast`.
+
+.. image:: forecast/so-forecast.png
+   :alt: A sales order with the forecast report icon highlighted.
+
+.. image:: forecast/forecast-chart.png
+   :alt: An example of the chart on a forecast report.
+
+.. image:: forecast/forecast-details.png
+   :alt: The detailed section on a forecast report showing the replenishment and reserved stock.
+
+Operations affecting the forecast report
+========================================
+
+The forecast report is influenced by various operations, each impacting stock levels differently.
+
+Requests for Quotation (RFQs) do not immediately impact the forecast report, as the products are not
+confirmed for replenishment.
+
+Purchase orders (POs), however, do affect the report as the products are expected to arrive after
+the |PO| has been confirmed.
+
+Confirmed |SOs| decrease the forecasted stock, adjusting the report based on the scheduled delivery
+date.
+
+Confirmed manufacturing orders (MOs)