feat: Document completed tasks for KMS, Cryptography, and Plugin Libraries

- Added detailed task completion records for KMS interface implementation and CLI support for file-based keys.
- Documented security enhancements including Argon2id password hashing, audit event contracts, and rate limiting configurations.
- Included scoped service support and integration updates for the Plugin platform, ensuring proper DI handling and testing coverage.

docs/technical/observability/README.md

@@ -0,0 +1,29 @@
+# Observability, Notifications & Telemetry
+
+Guides for capturing metrics, logs, traces, and delivering notifications.
+
+## Observability Stack
+- [../observability/observability.md](../../observability/observability.md) – AOC observability overview.
+- [../observability/policy.md](../../observability/policy.md) – policy-specific telemetry guidance.
+- [../observability/ui-telemetry.md](../../observability/ui-telemetry.md) – UI instrumentation and SSE tracing.
+- Telemetry module docs: [../../modules/telemetry/architecture.md](../../modules/telemetry/architecture.md), [../../modules/telemetry/implementation_plan.md](../../modules/telemetry/implementation_plan.md), [../../modules/telemetry/operations/collector.md](../../modules/telemetry/operations/collector.md), [../../modules/telemetry/operations/storage.md](../../modules/telemetry/operations/storage.md).
+- Authority / Scanner dashboards: see respective module `operations/*.json` and Grafana runbooks.
+
+## Events & Streaming
+- [../events/README.md](../../events/README.md) – canonical event definitions.
+- Payload schemas (JSON): [../events/scanner.scan.completed@1.json](../../events/scanner.scan.completed@1.json), [../events/scanner.report.ready@1.json](../../events/scanner.report.ready@1.json), [../events/scheduler.rescan.delta@1.json](../../events/scheduler.rescan.delta@1.json), [../events/attestor.logged@1.json](../../events/attestor.logged@1.json), etc.
+- [../events/samples/](../../events/samples/) – sample payloads with validation workflow.
+- [../../modules/export-center/provenance-and-signing.md](../../modules/export-center/provenance-and-signing.md) – provenance event integration.
+
+## Notifications Studio
+- [../notifications/overview.md](../../notifications/overview.md) – architecture and channels.
+- [../notifications/rules.md](../../notifications/rules.md) – rule authoring.
+- [../notifications/templates.md](../../notifications/templates.md) – template management.
+- [../notifications/digests.md](../../notifications/digests.md) – digest scheduling.
+- [../../modules/notify/architecture.md](../../modules/notify/architecture.md) & [../../modules/notify/implementation_plan.md](../../modules/notify/implementation_plan.md) – implementation detail.
+
+## Metrics & Dashboards
+- Scanner analyzers dashboard: [../../modules/scanner/operations/analyzers-grafana-dashboard.json](../../modules/scanner/operations/analyzers-grafana-dashboard.json).
+- Scheduler worker dashboards & alert rules: [../../modules/scheduler/operations/worker-grafana-dashboard.json](../../modules/scheduler/operations/worker-grafana-dashboard.json), [../../modules/scheduler/operations/worker-prometheus-rules.yaml](../../modules/scheduler/operations/worker-prometheus-rules.yaml).
+- Authority monitoring: [../../modules/authority/operations/monitoring.md](../../modules/authority/operations/monitoring.md).
+- DevOps observability tasks: see [../../modules/devops/architecture.md](../../modules/devops/architecture.md) and runbooks.