Initial commit: Pos packages

odoo-bringout-oca-ocb-pos_loyalty/doc/MODELS.md

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+# Models
+
+Detected core models and extensions in pos_loyalty.
+
+```mermaid
+classDiagram
+    class barcode_rule
+    class loyalty_card
+    class loyalty_mail
+    class loyalty_program
+    class loyalty_reward
+    class loyalty_rule
+    class pos_config
+    class pos_order
+    class pos_order_line
+    class pos_session
+    class res_config_settings
+```
+
+Notes
+- Classes show model technical names; fields omitted for brevity.
+- Items listed under _inherit are extensions of existing models.