docs+skills: add main UI/UX visual-truth PRD and skill links

.agents/skills/rlm-mem/brain/scripts/test_migration_tool.py

@@ -0,0 +1,55 @@
+"""
+Tests for migration tool idempotency.
+"""
+
+import unittest
+import tempfile
+import json
+from pathlib import Path
+from brain.scripts.migration_tool import migrate_chunks
+from brain.scripts.layered_adapter import LayeredChunkStoreAdapter
+from brain.scripts.layered_memory_store import LayeredMemoryStore
+from brain.scripts.memory_policy import MemoryPolicy
+
+class TestMigrationIdempotency(unittest.TestCase):
+    def setUp(self):
+        self.tmpdir = tempfile.TemporaryDirectory()
+        self.root = Path(self.tmpdir.name)
+        self.legacy_dir = self.root / "legacy"
+        self.legacy_dir.mkdir()
+        
+        # Setup legacy chunk
+        self.chunk_id = "legacy-123"
+        (self.legacy_dir / "chunk-1.json").write_text(json.dumps({
+            "id": self.chunk_id,
+            "content": "Legacy content",
+            "type": "fact",
+            "tags": ["old"],
+            "metadata": {"created_at": "2025-01-01T00:00:00Z"}
+        }), encoding="utf-8")
+
+    def tearDown(self):
+        self.tmpdir.cleanup()
+
+    def test_idempotent_migration(self):
+        # 1. First run
+        migrate_chunks(self.legacy_dir, "project_global", "project_global")
+        
+        # Verify it exists
+        policy = MemoryPolicy(project_root=Path.cwd())
+        store = LayeredMemoryStore(policy=policy, agent_id="verify")
+        adapter = LayeredChunkStoreAdapter(store)
+        self.assertIn(self.chunk_id, adapter.list_chunks())
+        
+        # Get count
+        initial_count = len(adapter.list_chunks())
+        
+        # 2. Second run (should skip)
+        migrate_chunks(self.legacy_dir, "project_global", "project_global")
+        
+        # Verify count hasn't changed
+        final_count = len(adapter.list_chunks())
+        self.assertEqual(initial_count, final_count)
+
+if __name__ == "__main__":
+    unittest.main()