Update docs release to v1.9.0

- Built changelog from towncrier fragments

[skip ci]

docs/changelog.d/deploy-frigate-nvr.feature.md

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-Deploy cloud-free NVR stack: Frigate 0.16.4 (ARM64) with ONNX/YOLO-NAS-s detection, Mosquitto MQTT broker, Ntfy self-hosted push notifications (with iOS APNs relay), and frigate-notify for detection alerting. GableCam (ReoLink Elite Floodlight) connected via RTSP with NFS recordings on sifaka, Grafana dashboard, Prometheus scraping, Homepage integration, and Caddy reverse proxies at nvr.ops.eblu.me and ntfy.ops.eblu.me.

docs/changelog.d/docs-connect-to-postgres.doc.md

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-Add how-to guide for connecting to PostgreSQL as a superuser via psql.

docs/changelog.d/feature-dind-zot-registry-mirror.infra.md

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-Configure DinD sidecar to use Zot as a pull-through registry mirror for Docker Hub images, reducing bandwidth and avoiding rate limits during Dagger CI builds.

docs/changelog.d/feature-node-22.infra.md

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-Upgrade Node.js from 20 to 22 (LTS) in Dagger docs build and forgejo-runner container

docs/changelog.d/feature-tier1-version-bumps.infra.md

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-Tier 1 version bumps: upstream images (prometheus, loki, alloy, kube-state-metrics, tailscale, navidrome), helm charts (CloudNativePG, 1Password Connect), and custom containers (miniflux, kubectl, kiwix-serve, nettest, transmission) updated to latest stable versions with Alpine 3.22 base.

docs/changelog.d/review-add-ansible-role.doc.md

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-Review add-ansible-role doc: fix secrets to use `op read`, match tag format to playbook, fix handler pattern, add last-reviewed date.

docs/changelog.d/review-why-gitops.doc.md

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-Review and fix why-gitops doc: correct wiki-links, fix apt->brew, broaden Pulumi scope, add last-reviewed.

docs/changelog.d/segment-home-network.infra.md

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-Abandon UniFi Pulumi IaC (provider bugs caused network outage); add manual three-network segmentation plan for UX7 web UI.