Fix slug routing for Notion pages with username-prefixed paths

[shigahi]

Summary

• Fix page ID extraction in generated Worker code to handle Notion's username-prefixed URL paths (e.g., /philipb/Ressources-9a8ace54b67c4611b93ead8db1b67c19)
• Replace pathname.slice(-32) with regex /[0-9a-f]{32}/ in 3 locations: client-side getPage(), pushState hook, and server-side canonical URL extraction

Root Cause

When Notion uses a personal workspace, page URLs contain a username prefix: /{username}/{Page-Name}-{pageId}. The previous slice(-32) approach extracted the last 32 characters of the full path, which included part of the page name instead of just the hex page ID. This caused updateSlug() to fail, leaving the URL in its raw Notion format.

Fix

Using pathname.match(/[0-9a-f]{32}/) correctly extracts the 32-character hex page ID regardless of the URL path structure.

Fixes #55

Test plan

• Verify slugs work with standard Notion URLs (/{pageId})
• Verify slugs work with username-prefixed Notion URLs (/{username}/{PageName}-{pageId})
• Verify client-side navigation (pushState) correctly rewrites URLs to slugs
• Verify canonical URLs are correctly resolved

🤖 Generated with Claude Code