feat(atlas): implement comprehensive MongoDB Atlas alerting system (#3)

* feat(atlas): implement comprehensive MongoDB Atlas alerting system

Add complete alert configuration and management capabilities with both CLI
and YAML ApplyDocument support. This feature provides critical monitoring
and notification functionality for MongoDB Atlas infrastructure.

BREAKING CHANGE: None - This is a new feature addition.

- `matlas atlas alerts list/get/acknowledge` - Alert monitoring and management
- `matlas atlas alert-configurations list/get/delete/matcher-fields` - Configuration CRUD operations

- AlertConfiguration kind for declarative alert management
- Alert kind for read-only alert status information
- Full ApplyDocument integration with validation

- EMAIL, SMS, SLACK, PAGER_DUTY, OPS_GENIE, DATADOG
- MICROSOFT_TEAMS, WEBHOOK, USER, GROUP, TEAM

- EQUALS, NOT_EQUALS, CONTAINS, NOT_CONTAINS
- STARTS_WITH, ENDS_WITH, REGEX, NOT_REGEX

- MetricThreshold: CPU, memory, disk usage with AVERAGE/TOTAL modes
- GeneralThreshold: Simple numeric thresholds for events

- AlertsService: Alert operations (list, get, acknowledge)
- AlertConfigurationsService: Full CRUD for alert configurations
- Bidirectional conversion between internal and Atlas SDK types

- AlertConfig: Complete configuration structure
- AlertMatcher: Rule-based targeting system
- AlertNotification: Multi-channel notification support
- AlertMetricThreshold/AlertThreshold: Flexible threshold system

- Comprehensive field validation and type checking
- Enum validation for operators and notification types
- Range validation for thresholds and numeric fields

- internal/types/apply.go: Added KindAlert and KindAlertConfiguration
- internal/types/config.go: Alert configuration type definitions
- internal/services/atlas/alerts.go: Alert operations service
- internal/services/atlas/alert_configurations.go: Configuration service
- internal/apply/validation.go: Alert validation functions

- cmd/atlas/alerts/alerts.go: Alert management commands
- cmd/atlas/alerts/alert_configurations.go: Configuration commands
- cmd/atlas/atlas.go: Integration with main atlas command

- docs/alerts.md: Complete alerting documentation
- docs/examples/alerts.md: Usage examples and patterns
- examples/alert-*.yaml: 4 comprehensive example configurations
- features/2025-08-30-alerting-system.md: Feature specification

- scripts/test/alerts-lifecycle.sh: Comprehensive test suite
- .github/workflows/release.yml: Updated CI configuration

- Alert configuration CRUD operations
- All notification channel types and matcher operators
- Threshold configurations and validation
- YAML parsing and ApplyDocument integration
- Error handling and edge cases
- Baseline integrity verification

- Atlas Go SDK AlertConfigurationsApi and AlertsApi
- Full matlas infra apply/plan/diff/validate support
- Consistent CLI patterns and output formatting
- Environment variable support for sensitive credentials

Closes: Related to monitoring and alerting infrastructure requirements
Refs: Feature specification in features/2025-08-30-alerting-system.md

* fix: fmt

---------

Co-authored-by: Danny Teller <danny.teller@tipalti.com>

Author: d-teller

.github/workflows/release.yml

@@ -34,16 +34,6 @@ jobs:
         with:
           go-version: ${{ env.GO_VERSION }}
 
-      - name: Cache Go Modules
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/go/pkg/mod
-            ~/.cache/go-build
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-
       - name: Clean Go Module Cache (prevent lint issues)
         run: go clean -modcache || true
 
@@ -191,16 +181,6 @@ jobs:
         with:
           go-version: ${{ env.GO_VERSION }}
 
-      - name: Cache Go Modules
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/go/pkg/mod
-            ~/.cache/go-build
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-
       - name: Build Binary
         env:
           GOOS: ${{ matrix.goos }}

CHANGELOG.md

@@ -1,7 +1,20 @@
 ## [Unreleased]
 
 ### Added
+- **MongoDB Atlas Alerting System**: Complete alert configuration and management system
+- Alert configuration CLI commands (`matlas atlas alert-configurations list/get/delete/matcher-fields`)
+- Alert management CLI commands (`matlas atlas alerts list/get/acknowledge`)
+- AlertConfiguration and Alert YAML kinds for ApplyDocument support
+- 11 notification channel types: EMAIL, SMS, SLACK, PAGER_DUTY, OPS_GENIE, DATADOG, MICROSOFT_TEAMS, WEBHOOK, USER, GROUP, TEAM
+- 8 alert matcher operators: EQUALS, NOT_EQUALS, CONTAINS, NOT_CONTAINS, STARTS_WITH, ENDS_WITH, REGEX, NOT_REGEX
+- Metric-based and general threshold configurations with AVERAGE/TOTAL modes
+- Comprehensive alert validation with field and type checking
+- Alert configuration examples for basic, comprehensive, notification channels, and threshold patterns
+- Alert lifecycle test suite with proper cleanup and baseline integrity verification
 - Advanced Atlas Search features support with CLI and YAML interfaces
+
+### Changed
+- Removed Go module caching from CI pipeline to resolve "Cannot open: File exists" errors on main branch builds
 - Search Index Analyzers configuration and management
 - Faceted Search functionality for string, number, and date facets
 - Autocomplete functionality with fuzzy matching support