chore(docs): clarify the supported gRPC network boundary

[yordis]

• Keeps deployment, operator, and migration guidance aligned with the supported network topology and honest TestClient capabilities.

[cursor]

PR Summary

Low Risk
Changes are mostly documentation and sample/CI configuration; operational impact is limited to operators who still rely on undocumented TCP settings or old monitoring RPC names.

Overview
This PR reframes TrogonEventStore’s supported network model across docs and sample deployments: gRPC on the node HTTP(S) endpoint for clients, gossip, elections, and follower-to-leader forwarding; gRPC on a dedicated replication HTTP(S) listener for node-to-node replication; and explicit removal of the legacy EventStore TCP client listener and TCP replication narrative from operator guidance.

Documentation updates span architecture, networking, cluster, security, installation, upgrade, Admin UI, and diagnostics—including Monitoring.ConnectionStats / Monitoring.ReplicationStats (replacing TCP-oriented stats), retired TestClient commands, and ReplicationPortAdvertiseAs vs deprecated TCP advertise settings.

Deployment/CI tweaks set EVENTSTORE_NODE_IP on local cluster compose files, adjust the runtime image EXPOSE ports, drop TCP test CA installation from the test Docker stage, trim .gitignore for a removed ClientAPI assembly path, and stop selecting TCP plugin tests in scripts/test.sh (with a longer core-services timeout).

^{Reviewed by Cursor Bugbot for commit fb61886. Bugbot is set up for automated code reviews on this repo. Configure here.}

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📥 Commits

Reviewing files that changed from the base of the PR and between e255edb and fb61886.

📒 Files selected for processing (15)

• .gitignore
• Dockerfile
• docker-compose.yml
• docs/README.md
• docs/admin-ui.md
• docs/architecture.md
• docs/cluster.md
• docs/diagnostics/README.md
• docs/installation.md
• docs/networking.md
• docs/security.md
• docs/upgrade-guide.md
• docs/whatsnew.md
• samples/server/docker-compose-cluster.yaml
• scripts/test.sh

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[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit 844ddd1. Configure here.}