Add decodeURLPath function for URL decoding and validation

[conico974]

Implement a new function to decode URL path components, ensuring validation against invalid characters and limiting decoding iterations to prevent potential DoS attacks.

I still need to figure out all the potential edge case as well as the desired behavior

[linear]

RND-9222 Percent-encoding parts of URL leads to a 404

[changeset-bot]

⚠️ No Changeset found

Latest commit: 25d727d

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[github-actions]

Summary of the deployments:

Version	URL	Status
Vercel	https://gitbook-v2-9dyp3a87x-gitbook.vercel.app	✅
Cloudflare	https://1ff5c1c5-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	2v	2c
GitBook	https://gitbook-v2-9dyp3a87x-gitbook.vercel.app/url/gitbook.com/docs	https://1ff5c1c5-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://gitbook-v2-9dyp3a87x-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://1ff5c1c5-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v2 (Inspect)	⚠️ Changes detected (Review)	43 changed	Jan 19, 2026, 7:09 PM
v2-cloudflare (Inspect)	⚠️ Changes detected (Review)	26 changed	Jan 19, 2026, 7:13 PM
v2-vercel (Inspect)	⚠️ Changes detected (Review)	30 changed	Jan 19, 2026, 7:14 PM