docs: trim site nav and focus messaging on AMD NPU

[tawei-amd]

Summary

• Remove four site sections: How It Works, Testimonials, Community, and Roadmap (pages + nav entries).
• Remove Qualcomm / Intel platform content and refocus messaging on the AMD Ryzen™ AI NPU solution.

Changes

• docs/_config.yml — dropped How It Works, Testimonials, Community, and Roadmap from nav_links (header + footer render from this).
• docs/how-it-works.md, docs/testimonials.md, docs/community.md, docs/roadmap.md — deleted.
• docs/index.md — hero now reads "built exclusively for AMD Ryzen™ AI NPUs"; removed the Qualcomm Snapdragon / Intel Core Ultra "coming soon" line.
• docs/news.md — reframed platform-support bullet to the AMD Ryzen™ AI lineup (Strix, Strix Halo, Kraken).
• docs/benchmarks.md — removed the commented-out Qualcomm reference-telemetry gallery block.

Notes

• No dangling cross-links to the removed pages remain.
• The only remaining "Intel" hit is an unrelated Homebrew comment in setup.sh.
• docs/assets/styles.css still has now-unused .testimonial-card* styles — left in place; can strip in a follow-up if desired.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR simplifies the documentation site’s navigation and content to focus messaging on AMD Ryzen™ AI NPUs, removing several site sections/pages and related non-AMD platform references.

Changes:

• Removed the “How It Works”, “Testimonials”, “Community”, and “Roadmap” pages and their nav entries.
• Updated homepage and news messaging to position FastFlowLM as AMD Ryzen™ AI NPU–focused (removing Qualcomm/Intel “coming soon” language).
• Removed a commented-out Qualcomm reference block from the benchmarks page.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
docs/_config.yml	Removes nav entries for the deleted site sections so header/footer nav no longer links to them.
docs/index.md	Updates hero copy to “built exclusively for AMD Ryzen™ AI NPUs” and removes Qualcomm/Intel mention.
docs/news.md	Reframes the “Expanding Platform Support” bullet to the AMD Ryzen™ AI NPU lineup.
docs/benchmarks.md	Deletes a commented-out Qualcomm reference telemetry gallery block.
docs/how-it-works.md	Deletes the “How It Works” page content.
docs/testimonials.md	Deletes the “Testimonials” page content.
docs/community.md	Deletes the “Community” page content.
docs/roadmap.md	Deletes the “Roadmap” page content (including non-AMD expansion language).

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