webhooks: add acceptable error handling

[trag1c]

Since the Monalisten task is not handled by discord.py, any exception that happens in there is dropped. There were several cases already where the bot stopped the webhook feed with no reported error on Sentry. This fixes that. The reraise_with_payload ctx manager is not ideal and is something I'd like to be part of Monalisten (which currently only handles errors related to the received event).

[Copilot]

Pull Request Overview

This PR adds comprehensive error handling to webhook processing by implementing task error handling for the Monalisten client and payload context managers for individual webhook events. The changes ensure exceptions in webhook processing are properly captured and reported to Sentry instead of being silently dropped.

• Adds task-level error handling with callback for the Monalisten background task
• Implements payload context managers to preserve event data when exceptions occur
• Enhances error logging to include exception notes

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
app/core.py	Adds task error handling infrastructure and enhances error logging
app/components/github_integration/webhooks/core.py	Implements reraise_with_payload context manager and error forwarding
app/components/github_integration/webhooks/prs.py	Wraps PR webhook handlers with payload context
app/components/github_integration/webhooks/issues.py	Wraps issue webhook handlers with payload context
app/components/github_integration/webhooks/discussions.py	Wraps discussion webhook handlers with payload context

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[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ RuntimeError: the received payload could not be pa... in production

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