Refactor BaseProductApp view rendering with component registry

[vertefra]

Problem

BaseProductApp.tsx has a long if-else chain (lines 78-144) to determine which view to render. This is:

• Hard to read and maintain
• Verbose and repetitive
• Makes adding new views tedious

Current Code

Multiple nested if statements checking currentView and returning components.

Solution

Use a view registry pattern with a configuration object that maps view types to components and their props.

Benefits

• More maintainable and readable
• Easier to add new views
• Clear separation of view config and logic
• Reduces nesting and complexity

Priority

Medium