fix: align programs tracks and content layouts

[BotshareAI]

Summary

• add the missing Academy Program 1 page and left-menu entry
• link all three Academy program cards and portfolio rows to their detail pages
• standardize one six-track taxonomy across navigation, the homepage, Start here, Tracks, and page templates
• define Domain Expert as the primary non-robotics track for people using process knowledge through the App and documentation
• add missing Domain Expert, Integrator, and Entrepreneur track pages
• explain the difference between documentation tracks and Academy programs
• hide the redundant one-item sidebar on Start here
• make standard tables use the full content width
• keep journey diagrams on one horizontal line, with scrolling on narrow screens instead of wrapping
• simplify breadcrumbs to plain, lightweight text separated by slashes

Canonical tracks

Beginner · Domain Expert · Builder · Integrator · Developer · Entrepreneur

“Operator” is treated as a function within the Domain Expert track, not a separate top-level identity.

Validation

• git diff --check
• strict MkDocs build passed before the final terminology-only adjustment
• generated Program 1 page confirmed
• six generated track pages confirmed
• generated Start here navigation sidebar confirmed hidden
• all 352 scaffold reader templates use the same six-track vocabulary