feat(sync): --verify exits non-zero on drift; adapter mismatch = loud drift (GAP-21, FU-8a)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

mcp-server/tests/test_sync_verify_gate.py

@@ -0,0 +1,48 @@
+"""FU-8a / GAP-21: sync --verify drift-gate logic (offline)."""
+from __future__ import annotations
+
+import importlib.util
+from pathlib import Path
+
+_SCRIPT = Path(__file__).resolve().parents[2] / "scripts" / "sync_agents_across_companies.py"
+_spec = importlib.util.spec_from_file_location("sync_agents", _SCRIPT)
+sync = importlib.util.module_from_spec(_spec)
+_spec.loader.exec_module(sync)
+
+
+def _agent(name, adapter="claude_code", cfg=None):
+    return {"id": f"id-{name}", "name": name, "adapter_type": adapter,
+            "adapter_config": cfg or {"model": "x"}, "runtime_config": {}, "metadata": {},
+            "budget_monthly_cents": 0, "icon": "", "title": "", "role": "", "agent_api_keys": []}
+
+
+def test_verify_exit_code_clean_is_zero():
+    assert sync._verify_exit_code(plan=[], mismatches=[], missing=[]) == 0
+
+
+def test_verify_exit_code_drift_is_nonzero():
+    assert sync._verify_exit_code(plan=[("m", "mi", {"x": 1})], mismatches=[], missing=[]) == 1
+
+
+def test_verify_exit_code_adapter_mismatch_is_nonzero():
+    assert sync._verify_exit_code(plan=[], mismatches=["עוזר משפטי"], missing=[]) == 1
+
+
+def test_verify_exit_code_missing_is_nonzero():
+    assert sync._verify_exit_code(plan=[], mismatches=[], missing=["סוכן"]) == 1
+
+
+def test_build_drift_report_flags_adapter_mismatch():
+    master = [_agent("A", adapter="claude_code")]
+    mirror_by_name = {"A": _agent("A", adapter="deepseek_local")}
+    rep = sync.build_drift_report(master, mirror_by_name, mirror_skills=set(), only=None)
+    assert "A" in rep["mismatches"]
+    assert rep["plan"] == []
+
+
+def test_build_drift_report_flags_missing_and_plan():
+    master = [_agent("A"), _agent("B")]
+    mirror_by_name = {"B": _agent("B", cfg={"model": "different"})}
+    rep = sync.build_drift_report(master, mirror_by_name, mirror_skills=set(), only=None)
+    assert "A" in rep["missing"]
+    assert any(p[0]["name"] == "B" for p in rep["plan"])