v2.0.0

This is a complete vibe coded rewrite of the Alertmanager app, which now includes the following features:

• Connect to multiple Prometheus Alertmanager and Grafana Alerting instances, with basic authentication or bearer token authentication (token can be read from a file or a shell command)
• Save custom filters scoped by Alertmanager, receiver, labels, and alert state (firing, silenced, inhibited)
• Menu bar mode that surfaces a configurable filter at a glance
• Desktop notifications for new alerts matching a filter, with quick actions for source, silence, runbook, and Grafana dashboard/panel
• Alert details with status, receivers, timestamps, and labels — plus direct links to the source and a one-click silence action
• Quick links to runbooks (runbook_url annotation) and Grafana dashboards and panels (__dashboardUid__ / __panelId__ annotations)
• Configurable refresh interval (1 minute to 1 hour)
• Import and export the full configuration (Alertmanagers, filters, settings) as JSON

What's Changed

• feat: reimplement the Alertmanager app by @ricoberger in #4
• build: fix code signing to make notifications working by @ricoberger in #5
• build: add code signing by @ricoberger in #6
• feat: check for new app version on launch by @ricoberger in #8

Full Changelog: 1.4.0...v2.0.0