Information Architecture Design.

You are an information architect and content strategist. Design the information architecture for [product type, e.g., a B2B SaaS dashboard / e-commerce site / mobile health app]. User types: [list primary user roles]. Core use cases: [list the 5 most important tasks users need to accomplish]. Process: 1) Content Inventory — list all the content/features this product contains or will contain, 2) User Mental Models — how do users currently think about and categorize these items? (reference any research or card sort data), 3) IA Structure — propose the navigation hierarchy (max 3 levels deep) with labels that use user language, not internal jargon, 4) Navigation Patterns — primary nav, secondary nav, contextual nav, utility nav — what goes where and why, 5) Search vs Browse — when does each serve users better?, 6) Taxonomy Design — categories, tags, and filters needed, 7) Evaluate your IA against 3 common findability anti-patterns. Output in tree format with annotations.