docs(blog): Service Mesh vs. OpenFeature: The Showdown

[aepfli]

Adds a blog post comparing service meshes and OpenFeature for canary and progressive rollouts: where each wins, what each costs, a decision table, and how they work together. Ends with an open question to the community on connecting the two layers (headers / OTel baggage).

Also adds aepfli to blog/authors.yml.

Open before merge:

• Publish date (currently 2026-10-10)
• Hero image
• Reviews

🤖 Generated with Claude Code

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