docs: split Structure into six linked department pages

docs/organization/structure/product.mdx

@@ -0,0 +1,17 @@
+---
+title: Product
+pagination_prev: structure
+pagination_next: structure/technology
+description: Product purpose, teams and responsibilities in Eldorado’s operating model.
+---
+
+**Purpose:** improve the buyer and seller experience and turn marketplace opportunities into valuable product capabilities.
+
+| Team | Responsibilities |
+| --- | --- |
+| Product Management | Product strategy, roadmaps, priorities and outcome measurement across discovery, categories, orders, seller tools, payments and operational workflows. |
+| Product Design | User research, interaction design, design consistency and accessible buyer and seller experiences. |
+
+Product Management owns what to improve and why. Product Design shapes the experience. Both work with Technology teams while remaining within Product.
+
+[Return to Structure overview](../structure.mdx)