semi implemented and features implemented save checkpoint

docs/features/unchecked/integrations/integration-doctor-checks.md

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+# Integration Doctor Checks (Connectivity, Credentials, Permissions, Rate Limits)
+
+## Module
+Integrations
+
+## Status
+IMPLEMENTED
+
+## Description
+Doctor diagnostic checks for integration health: connectivity verification, credential validation, permission checks, and rate limit status monitoring. Generates aggregated health reports across all integrations.
+
+## Implementation Details
+- **Integration service**: `src/Integrations/StellaOps.Integrations.WebService/IntegrationService.cs` -- health check orchestration across all integrations
+- **Infrastructure abstractions**: `src/Integrations/StellaOps.Integrations.WebService/Infrastructure/Abstractions.cs` -- connectivity, credential, permission check interfaces
+- **Integration models**: `src/Integrations/__Libraries/StellaOps.Integrations.Core/IntegrationModels.cs` -- health report models
+- **Plugin contract**: `src/Integrations/__Libraries/StellaOps.Integrations.Contracts/IIntegrationConnectorPlugin.cs` -- plugins implement health check methods
+- **API endpoints**: `src/Integrations/StellaOps.Integrations.WebService/IntegrationEndpoints.cs` -- health check API
+- **Doctor plugin integration**: Cross-module with `src/Doctor/` -- Doctor integration checks reference integration health
+- **Tests**: `src/Integrations/__Tests/StellaOps.Integrations.Tests/IntegrationServiceTests.cs`
+- **Source**: SPRINT_20260110_102_006_INTHUB_doctor_checks.md
+
+## E2E Test Plan
+- [ ] Verify connectivity checks detect unreachable integrations
+- [ ] Test credential validation catches expired or invalid credentials
+- [ ] Verify permission checks identify missing API scopes
+- [ ] Test rate limit monitoring reports quota usage
+- [ ] Verify aggregated health report covers all configured integrations