Improve security and error handling in theme park application

Address JWT decoding vulnerability in email change function and enhance Supabase Edge Function error handling.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: a46bc7a0-bbf8-43ab-97c0-a58c66c2e365
Replit-Commit-Checkpoint-Type: full_checkpoint
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pac7
2025-10-08 12:08:32 +00:00
parent 163b721271
commit 6f74fcaed7

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## Overview
ThrillWiki is a community-driven web application for discovering, reviewing, and tracking theme parks, rides, and related entities globally. Its core purpose is to provide a centralized platform for enthusiasts to research attractions and contribute to a collaborative knowledge base through user contributions and reviews, offering a comprehensive encyclopedia for the theme park world.
## Recent Changes (October 8, 2025)
### Security Enhancements
- **Fixed JWT Decoding Security Vulnerability:** Updated `cancel-email-change` Edge Function to properly handle base64url encoding used by JWT tokens. Replaced browser-specific decoding with a secure implementation that correctly normalizes URL-safe characters and adds proper padding.
- **Enhanced Error Handling:** Added comprehensive error handling to all Supabase Edge Functions with granular try-catch blocks for network requests, JSON parsing, and API responses. Improves reliability and provides detailed error messages for debugging.
## Recent Changes (October 7, 2025)
### Security Enhancements