feat: optimize query path and add smoke test/demo assets

examples/sample-data.json

@@ -0,0 +1,44 @@
+{
+  "organizations": [
+    { "id": "org:yonexus", "name": "Yonexus" }
+  ],
+  "departments": [
+    { "id": "dept:platform", "name": "Platform", "orgId": "org:yonexus" },
+    { "id": "dept:ai", "name": "AI", "orgId": "org:yonexus" }
+  ],
+  "teams": [
+    { "id": "team:platform-core", "name": "Core", "deptId": "dept:platform" },
+    { "id": "team:ai-agent", "name": "Agent", "deptId": "dept:ai" }
+  ],
+  "agents": [
+    { "id": "orion", "name": "Orion", "roles": ["org_admin", "agent"] },
+    { "id": "hangman", "name": "Hangman", "roles": ["agent"] }
+  ],
+  "identities": [
+    {
+      "id": "identity:orion-platform",
+      "agentId": "orion",
+      "deptId": "dept:platform",
+      "teamId": "team:platform-core",
+      "meta": {
+        "position": "assistant",
+        "discord_user_id": "1474088632750047324",
+        "git_user_name": "orion"
+      }
+    },
+    {
+      "id": "identity:hangman-ai",
+      "agentId": "hangman",
+      "deptId": "dept:ai",
+      "teamId": "team:ai-agent",
+      "meta": {
+        "position": "owner",
+        "discord_user_id": "561921120408698910",
+        "git_user_name": "hangman"
+      }
+    }
+  ],
+  "supervisors": [
+    { "agentId": "orion", "supervisorId": "hangman" }
+  ]
+}