fix(Redirects): send /null to the site root

[xinshoutw]

• add public/_redirects so Cloudflare Pages 301s /null and /null/* to /

[greptile-apps]

Greptile Summary

This PR adds Cloudflare Pages redirect rules that permanently send /null and nested /null/* paths to the site root.

• Adds an exact redirect for /null.
• Adds a splat redirect for paths beneath /null/.
• Uses the repository's established public/ convention for Cloudflare deployment metadata.

Confidence Score: 5/5

The PR appears safe to merge because the redirect syntax, route coverage, and deployment location align with the repository's Cloudflare Pages setup.

The new rules correctly cover both the bare /null path and descendants, and Astro emits the file from public/ into the deployment output root.

Important Files Changed

Filename	Overview
public/_redirects	Adds valid Cloudflare Pages 301 rules for the exact and nested /null routes; no issues identified.

_{Reviews (1): Last reviewed commit: "fix(Redirects): send /null to the site r..." | Re-trigger Greptile}