new-nav: Redesign top navigation links and labels

[mich-elle-luna]

Continuing changes to focus on open source in the top nav and get rid of the drop-down menus that get in the way whenever looking through the site. https://redis.io/docs/staging/new-nav/

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Note

Low Risk
Low risk template-only navigation changes, but it can affect site discoverability and internal link correctness across desktop/mobile headers.

Overview
Updates layouts/partials/header.html to remove the Products/Resources dropdown menus and replace them with direct nav links (desktop and mobile) to AI Agent builder, Redis install, Data types, Tools, Community, and Docs.

Also tweaks header UI/spacing (icon positioning and link widths) and updates CTAs by removing Pricing/Book a meeting and renaming Try Redis to Sign up.

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🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[dwdougherty]

LGTM, though I think I'd prefer to see "AI agent builder" instead of "AI Agent builder" just to be consistent with the other menu items.

I'll add Docs back as reviewer so other folks get a chance to comment.

[andy-stark-redis]

Basically LGTM, but one question I'd consider is whether the AI agent builder is the best thing we could have in that highly prominent link? I do think it's a cool feature I'm not sure if it's the best entry point for someone evaluating Redis for an AI task. Maybe you could keep the button as it is but then add more links out to the other AI content in the intro to the agent builder page?