fix(agent): guard team creation against duplicate relationship replies

[RerankerGuo]

Summary

• Treat Team/Leader/Worker relationship questions as read-only in the Manager Team Management skill.
• Require hiclaw get team <TEAM_NAME> -o json before hiclaw create team.
• Add a changelog entry for the Manager guardrail.

Why

Fixes #987. The reported flow asks the Manager to explain an existing Team, Leader DM, and Worker relationship, but the Manager can interpret that as another team creation request. The new guidance makes relationship explanation read-only and makes duplicate creation checks explicit.

Temporary dependencies

This branch is temporarily stacked on #985 and #1015. Its previous CI failure
was SHARD_D/test-21: the Leader kept working in its DM instead of coordinating
in the Team Room. #1015 fixes that behavior and now passes all 10 integration
matrix jobs; #1015 itself uses #985 for deterministic SHARD_A setup.

Relative to #1015, this PR still changes only:

• changelog/current.md
• manager/agent/skills/team-management/SKILL.md
• manager/agent/skills/team-management/references/create-team.md

After the dependency PRs merge, this PR automatically reduces to those files.

Validation

• git diff --check against test: nudge team leader to coordinate in team room #1015
• product diff remains 25 insertions and 1 deletion across the original 3 files
• refreshed CI run 29254149282: all builds and all 10 integration matrix jobs passed, including SHARD_D/test-21 and all SHARD_A variants
• the prior attempt never reached checkout because GitHub Actions returned Service Unavailable while resolving action metadata

Local runtime reproduction was not run because this is an agent-facing built-in instruction change and the local Docker socket is not accessible in this environment.

[github-actions]

📊 CI Metrics Report

Summary

Metric	Current	Baseline	Change
LLM Calls	134	81	+53 ↑ +65.4%
Input Tokens	4383203	2803871	+1579332 ↑ +56.3%
Output Tokens	30929	16791	+14138 ↑ +84.2%
Total Tokens	4414132	2820662	+1593470 ↑ +56.5%

By Role

Role	Metric	Current	Baseline	Change
🧠 Manager	LLM Calls	78	68	+10 ↑ +14.7%
	Input Tokens	2845207	2502214	+342993 ↑ +13.7%
	Output Tokens	16809	13725	+3084 ↑ +22.5%
	Total Tokens	2862016	2515939	+346077 ↑ +13.8%
🔧 Workers	LLM Calls	56	13	+43 ↑ +330.8%
	Input Tokens	1537996	301657	+1236339 ↑ +409.8%
	Output Tokens	14120	3066	+11054 ↑ +360.5%
	Total Tokens	1552116	304723	+1247393 ↑ +409.4%

Per-Test Breakdown

Test	Mgr Calls	Wkr Calls	Δ Calls	Mgr In	Wkr In	Mgr Out	Wkr Out	Δ Tokens	Trend
02-create-worker	7	0	-5 ↓ -41.7%	212013	0	792	0	-145817 ↓ -40.7%	✅ improved
03-assign-task	13	9	+7 ↑ +46.7%	406680	213326	1960	1422	+149732 ↑ +31.6%	⚠️ regressed
04-human-intervene	16	0	+3 ↑ +23.1%	480282	0	2780	0	+50064 ↑ +11.6%	⚠️ regressed
05-heartbeat	9	0	+2 ↑ +28.6%	317565	0	1846	0	+44159 ↑ +16.0%	⚠️ regressed
06-multi-worker	33	47	+46 ↑ +135.3%	1428667	1324670	9431	12698	+1495332 ↑ +116.8%	⚠️ regressed

Trends

✅ 1 test(s) improved (fewer LLM calls)
⚠️ 4 test(s) regressed (more LLM calls)

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Generated by HiClaw CI on 2026-07-13 14:38:05 UTC

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[github-actions]

❌ Integration Tests Failed (controller-cr-2 / mgr=copaw / wk=copaw)

Commit: 0b4a89c
Workflow run: #1530

Test Results

No test output captured.

Debug Log (tail)

No debug logs available.

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