feat(docs): add Novu docs homepage with hero and image cards

[Aviatorscode2]

Summary

• Adds a dedicated docs homepage (docs/index.mdx) instead of redirecting / straight to /platform
• Branded hero: full-bleed illustration background, condensed title/tagline sized and spaced to sit inside the artwork at all viewport widths
• "Start with Platform" / "Start with Agents" cards now use illustrated img cards (new docs-home-card-platform.svg / docs-home-card-agents.svg) instead of plain icon cards, matching Mintlify's own card pattern
• docs.json: primary color updated to Novu pink, logo now links to /, removed the old / → /platform redirect

Test plan

• Verified hero renders correctly at desktop (1280px, 1920px), tablet (768px), and mobile (420px) widths
• Verified image cards render and stack correctly on mobile
• Visual review on preview deploy

Generated with Claude Code

Greptile Summary

This PR adds a dedicated docs homepage for the Mintlify site. The main changes are:

• New docs/index.mdx homepage with Platform and Agents entry cards.
• New illustrated SVG assets for the homepage hero and cards.
• Updated docs/docs.json branding, logo link, and root redirect behavior.
• Root-page CSS for the homepage hero, layout, and active navigation color.

Confidence Score: 5/5

The changes are limited to documentation homepage content, static SVG assets, and styling/configuration for the docs site.

No correctness, security, or merge-blocking issues were identified in the changed documentation surface.

T-Rex Logs

What T-Rex did

• Attempted to run the docs homepage capture using the generated Playwright/Mintlify script and encountered a server launch blocker during the base Mintlify run.
• Real Mintlify previews for head and base were blocked by a Node version issue, and later attempts did not complete reliably within the command timeout; Playwright could not be resolved to produce captures.
• Compared the before/after configurations between runs and collected commands, working directories, exit codes, and JSON outputs to document the changes in primaryColor, logoHref, and rootRedirect.

_{Ran code and verified through T-Rex}

_{Reviews (1): Last reviewed commit: "Merge branch 'next' into docs/homepage-r..." | Re-trigger Greptile}

[netlify]

✅ Deploy Preview for dashboard-v2-novu-staging canceled.

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[github-actions]

Hey there and thank you for opening this pull request! 👋

We require pull request titles to follow specific formatting rules and it looks like your proposed title needs to be adjusted.

Your PR title is: feat(docs): add Novu docs homepage with hero and image cards

Requirements:

1. Follow the Conventional Commits specification
2. As a team member, include Linear ticket ID at the end: fixes TICKET-ID or include it in your branch name

Expected format: feat(scope): Add fancy new feature fixes NOV-123

Details:

PR title must end with 'fixes TICKET-ID' (e.g., 'fixes NOV-123') or include ticket ID in branch name

[greptile-apps]

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[scopsy]

https://novu-c5de82d9-docs-homepage-redesign.mintlify.site/