release: merge dev into main for v1.3.0 production rollout

[podlLev]

Overview

This release PR merges all features, real-time messaging capabilities, testing improvements, monitoring enhancements, and documentation updates implemented in dev into main for the v1.3.0 production rollout.

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🔗 Merged Feature PRs & Direct Commits Included in this Release

• feat(map): implement interactive Leaflet weather map, proxy tile endpoints, and secure CSRF popup interactions #42
• feat(ws): implement real-time WebSocket live weather pushes and STOMP feed integration #43
• docs(ci): add JaCoCo coverage badge generation and enhance README architecture documentation #44
• test: introduce Testcontainers setup and comprehensive integration test suite for controllers and repositories #45
• feat(ci): separate Failsafe integration tests, merge JaCoCo execution reports, and add Prometheus/Grafana monitoring #46

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🚀 Key Summary of Changes

• Interactive Weather Map Module:

  • Added Leaflet.js interactive map view with weather layer toggling (precipitation, clouds, temperature, wind).
  • Proxied OpenWeatherMap tile layer requests via REST backend controllers to protect API credentials.
  • Injected CSRF tokens into the map JSON model state to support secure form submissions inside interactive popups.

• Real-Time WebSockets & STOMP Push Engine:

  • Configured WebSocket endpoints with STOMP messaging and authenticated handshakes.
  • Added active subscription tracking, disconnect cleanup logic, and scheduled background tasks to push real-time weather updates directly to UI dashboard and forecast components.

• Testing Infrastructure & Quality Assurance:

  • Integrated Testcontainers for real-world integration testing against containerized database instances.
  • Separated unit tests (mvn test) and integration tests (mvn verify) using the Maven Failsafe plugin (*IT convention).
  • Merged multi-agent JaCoCo execution reports into unified coverage data.

• Monitoring, Observability & Cache Optimization:

  • Integrated Prometheus metric scraping and Grafana dashboard configurations.
  • Registered initial Redis cache names to track cache hits, misses, and eviction metrics accurately.

• CI/CD & Documentation Enhancements:

  • Added automated JaCoCo coverage badge generation via GitHub Actions workflows.
  • Updated README.md with CI status badges, testing lifecycle instructions, and complete system architecture diagrams.