refactor(ci): use curl + retries for website build webhook

[Sriniketh24]

Summary

This PR refactors the GitHub Actions workflow that triggers the HTTPie Desktop website rebuild on release events. The goal is to remove a fragile dependency and make the workflow more reliable and maintainable.

Problem

The existing workflow relied on installing HTTPie using:

snap install --edge httpie

This introduced multiple issues:

unnecessary external dependency

possible snap availability failures on runners

edge channel instability

difficult to read single-line script

no failure handling or retries

If the webhook failed once, the website build would silently not run.

Changes Made

The workflow was rewritten to:

Replace HTTPie CLI with curl -fsS -X POST

Add strict shell safety: set -euo pipefail

Add missing secret validation

Add retry logic (3 attempts with delay)

Add least privilege permissions: contents: read

Add timeout-minutes: 5 to prevent stuck workflows

Improve readability and maintainability

Before | After -- | -- snap install dependency | uses built-in curl single attempt | retries with backoff no error handling | strict mode + secret check hard to read | structured YAML no timeout | controlled execution time Testing

YAML validated locally using Python YAML parser

Logic verified locally (retry + secret guard)

GitHub Actions will execute and validate on release events

Impact

This improves CI reliability and reduces external dependencies while keeping the same functionality.