feat(ai-gateway): Update AI Gateway landing page

[tomek-labuk]

PR Title

Use the format feat/fix/chore(Product): Title, for example:

• feat(mesh): Add transparent proxy upgrade guide
• fix(gateway): Correct decK example in rate limiting how-to
• chore(ai-gateway): Bump plugin schema
• chore(platform): Fix issue template
• release: Kong Gateway 3.14

Description

Fixes #issue

Preview Links

Checklist

• Tested how-to docs. If not, note why here.
• All pages contain metadata.
• Any new docs link to existing docs.
• All autogenerated instructions render correctly (API, decK, Konnect, Kong Manager).
• Style guide (capitalized gateway entities, placeholder URLs) implemented correctly.
• Every page has a description entry in frontmatter.
• Add new pages to the product documentation index (if applicable).

[Copilot]

Pull request overview

This PR updates the AI Gateway landing page messaging and navigation to reflect the AI Gateway 2.0 entity model (Models/Providers/Policies, plus MCP and A2A concepts) and adds new icon assets to support the refreshed page content.

Changes:

• Adds a new “Gateway types” section (LLM, MCP, A2A) and updates “Get started”/resource cards to point to entity-focused docs.
• Reframes “providers”, “capabilities”, and “Universal API” content around Model/Provider/Policy entities instead of plugin-centric wording.
• Introduces new SVG icons used by the updated landing page cards.

Reviewed changes

Copilot reviewed 1 out of 4 changed files in this pull request and generated no comments.

File	Description
app/_landing_pages/ai-gateway.yaml	Updates AI Gateway landing page structure, links, and copy to align with the entity-based model and gateway types.
app/assets/icons/entity.svg	Adds a new icon for the “AI Gateway entities” card.
app/assets/icons/model.svg	Adds a new icon for the Model entity reference card.
app/assets/icons/provider.svg	Adds a new icon for the Provider entity reference card.

[Copilot]

Pull request overview

Copilot reviewed 25 out of 28 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (2)

app/_kong_plugins/ai-mcp-proxy/index.md:106

• /ai-gateway/mcp/kong-mcp/get-started/ doesn't exist (no matching page/redirect), while _redirects only covers /mcp/kong-mcp/get-started/; either add a redirect for the new path or update this link to the existing target under /konnect-platform/konnect-mcp/....

  - text: Learn about Kong MCP traffic gateway
    url: /mcp/
  - text: Learn about {{site.konnect_product_name}} MCP Server
    url: /ai-gateway/mcp/kong-mcp/get-started/
  - text: Autogenerate MCP tools from a RESTful API

app/_landing_pages/ai-gateway.yaml:284

• This CTA links to /mcp, but the landing page introduced/updated in this PR lives under /ai-gateway/mcp/; update the CTA (or add a root /mcp/ redirect) so users don’t hit a 404.

            title: MCP tool governance
            description: Control and observe MCP tool traffic with authentication, access policies, and telemetry.
            icon: /assets/icons/mcp.svg
            cta:
              url: /mcp
              align: end

[CLAassistant]

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✅ tomek-labuk
❌ Copilot
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