Update product positioning copy for enterprise tier

[lbeau]

Epic

FlowFuse/admin#529

Description

As a:
Website visitor or prospect

I want to:
See updated product positioning copy highlighting FlowFuse's three pillars: Operational Scaling, System Agility, and Event-Driven Data Bridge

So that:
I understand FlowFuse’s value proposition and new feature focus, supporting pricing changes with clear benefits.

Acceptance Criteria

• Homepage, product page, and relevant landing pages updated with new pillar copy
• Pillar copy aligns with enterprise tier features (Certified Nodes, AI Insights)
• Links to blog post referencing narrative justification
• Reviewed and approved by Marketing and Product

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate