fix: update vibe coding guides

[dcrawbuck]

Removes the unused SDK-specific 'vibe-coding-guide' pages and the shared base include they depended on. Updates the vibe coding overview plus the Superwall MCP and Superwall Skill guides to remove references to the retired Superwall Docs MCP and Superwall GPT app, and to clarify the distinction between the Superwall MCP and the Superwall Skill. Validation: 'bun test' passes. Validation: 'bun run build:cf' currently fails because prerender still reaches /docs/react-native/vibe-coding-guide from stale changelog links.

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Note

Low Risk
Low risk documentation cleanup plus a small UI safeguard that filters changelog entries to valid page URLs, reducing chances of broken prerender links.

Overview
Removes the unused SDK-specific vibe-coding-guide.mdx pages (and the shared vibe-coding-guide-base.mdx include) that they depended on.

Updates the Vibe Coding and dashboard guides to drop references to the retired Superwall Docs MCP/Docs GPT and to clarify positioning between Superwall Skill vs Superwall MCP.

Hardens ChangelogTimeline by filtering recent changelog entries to only those whose url exists in source.getPages(), preventing stale changelog links from rendering.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	superwall-docs-staging	6d046fd	Commit Preview URL Branch Preview URL	Apr 08 2026, 12:29 AM