docs(changelog): record the relay dashboard removal

[willwashburn]

Adds the [Unreleased] changelog entry for the local web dashboard removal (landed in #1146), kept out of that PR per request.

Removed

• Local web dashboard: agent-relay up no longer starts one; installer no longer fetches relay-dashboard-server/UI or @agent-relay/dashboard-server; up drops --no-dashboard/--port/--foreground.
• human_dashboard ActionSource retired (CLI + broker); HTTP-API spawns report human_cli.

Breaking Changes

• agent-relay up is broker-only, attached by default; use --background to detach (replaces the old --no-dashboard detach behavior). Removed flags now error.
• AGENT_RELAY_DASHBOARD_PORT → AGENT_RELAY_BROKER_PORT.

Migration Guidance included for each.

This is a SemVer-major (breaking) change set; the version bump is intentionally left out for maintainers to decide.

[gemini-code-assist]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 223cb414-62e5-4809-9866-855cd4c096da

📥 Commits

Reviewing files that changed from the base of the PR and between b68f93a and b44ea67.

📒 Files selected for processing (1)

• CHANGELOG.md

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📝 Walkthrough

Walkthrough

CHANGELOG.md gains a breaking-changes block for an upcoming release, documenting the removal of the local web dashboard, the human_dashboard→human_cli telemetry rename, agent-relay up flag changes (--background replaces dashboard-detach flags; --no-dashboard, --port, --foreground become unknown options), the AGENT_RELAY_DASHBOARD_PORT→AGENT_RELAY_BROKER_PORT env-var rename, and corresponding migration steps.

Changes

Dashboard Removal Release Notes

Layer / File(s)	Summary
Breaking change and migration notes CHANGELOG.md	Adds "Removed", "Breaking Changes", and "Migration Guidance" sections covering dashboard removal, telemetry source rename, agent-relay up flag changes, and environment variable replacement.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐇 The dashboard has hopped away for good,
No port to watch, no web to brood.
human_cli takes the stage instead,
Old flags are gone, new flags ahead!
Hop along and update your scripts,
The broker runs on fresher tips. 🌿

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: documenting the relay dashboard removal in the changelog.
Description check	✅ Passed	The description provides comprehensive details about the removed features, breaking changes, and migration guidance, though it doesn't strictly follow the provided template structure.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch changelog/remove-relay-dashboard

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Point migration guidance at local up

When users follow this migration literally, agent-relay up --background is not a registered command in the current CLI: createProgram() attaches the broker lifecycle commands only under the local group (packages/cli/src/cli/bootstrap.ts:290-292), and the command-surface test lists the leaf as local up (packages/cli/src/cli/bootstrap.test.ts:6-10). The changelog should direct users to agent-relay local up --background (and qualify the surrounding up references) so the upgrade note does not send them to an unknown command.

Useful? React with 👍 / 👎.