Initial standalone memabra release

docs/demo-artifacts/trajectories/traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15.json

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+{
+  "trajectory_id": "traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15",
+  "task": {
+    "task_id": "task-aeed227c-2e87-45d8-8d98-e270656556b6",
+    "input": "Use my telegram preference for this answer.",
+    "channel": "telegram",
+    "created_at": "2026-04-14T06:53:08.731336+00:00",
+    "user_id": "oza"
+  },
+  "context_snapshot": {
+    "conversation_summary": "",
+    "environment_summary": "",
+    "recent_failures": []
+  },
+  "candidate_sets": {
+    "memory": [
+      {
+        "id": "mem-telegram-pref",
+        "type": "memory",
+        "title": "Telegram preference",
+        "summary": "Prefer plain text on Telegram.",
+        "triggers": [
+          "telegram",
+          "preference",
+          "answer"
+        ],
+        "cost": 0.0,
+        "confidence": 0.95,
+        "success_rate": 0.9,
+        "freshness": 0.9,
+        "risk": 0.0,
+        "tags": [
+          "output"
+        ],
+        "source": "user",
+        "type_payload": {}
+      }
+    ],
+    "skill": [
+      {
+        "id": "skill-deploy",
+        "type": "skill",
+        "title": "Deploy workflow",
+        "summary": "Reusable deployment workflow.",
+        "triggers": [
+          "deploy",
+          "workflow",
+          "service"
+        ],
+        "cost": 0.0,
+        "confidence": 0.8,
+        "success_rate": 0.9,
+        "freshness": 0.8,
+        "risk": 0.0,
+        "tags": [
+          "ops"
+        ],
+        "source": "system",
+        "type_payload": {}
+      }
+    ],
+    "tool": [
+      {
+        "id": "tool-terminal",
+        "type": "tool",
+        "title": "terminal",
+        "summary": "Run terminal-style inspection commands.",
+        "triggers": [
+          "check",
+          "current",
+          "status",
+          "system"
+        ],
+        "cost": 0.0,
+        "confidence": 0.95,
+        "success_rate": 0.9,
+        "freshness": 1.0,
+        "risk": 0.0,
+        "tags": [
+          "inspection"
+        ],
+        "source": "system",
+        "type_payload": {}
+      }
+    ]
+  },
+  "decisions": [
+    {
+      "step": 1,
+      "decision_type": "inject_memory",
+      "selected_ids": [
+        "mem-telegram-pref"
+      ],
+      "rejected_ids": [],
+      "rationale": "Task likely depends on stable user/project facts.",
+      "estimated_cost": 0.0
+    }
+  ],
+  "events": [
+    {
+      "event_id": "evt-d71b1fdf-5343-4ac1-89a0-75488c1ce30b",
+      "trajectory_id": "traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15",
+      "timestamp": "2026-04-14T06:53:08.731418+00:00",
+      "stage": "retrieval",
+      "event_type": "task_received",
+      "payload": {
+        "input": "Use my telegram preference for this answer."
+      },
+      "metrics": {},
+      "parent_event_id": null
+    },
+    {
+      "event_id": "evt-1f750475-1127-41e5-9f94-c87e4b019ee2",
+      "trajectory_id": "traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15",
+      "timestamp": "2026-04-14T06:53:08.731427+00:00",
+      "stage": "retrieval",
+      "event_type": "candidates_recalled",
+      "payload": {
+        "memory_ids": [
+          "mem-telegram-pref"
+        ],
+        "skill_ids": [
+          "skill-deploy"
+        ],
+        "tool_ids": [
+          "tool-terminal"
+        ]
+      },
+      "metrics": {},
+      "parent_event_id": "evt-d71b1fdf-5343-4ac1-89a0-75488c1ce30b"
+    },
+    {
+      "event_id": "evt-741967a5-41b9-4917-9b95-4047f89e6e19",
+      "trajectory_id": "traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15",
+      "timestamp": "2026-04-14T06:53:08.731432+00:00",
+      "stage": "policy",
+      "event_type": "action_selected",
+      "payload": {
+        "step": 1,
+        "decision_type": "inject_memory",
+        "selected_ids": [
+          "mem-telegram-pref"
+        ],
+        "rejected_ids": [],
+        "rationale": "Task likely depends on stable user/project facts.",
+        "estimated_cost": 0.0
+      },
+      "metrics": {},
+      "parent_event_id": "evt-1f750475-1127-41e5-9f94-c87e4b019ee2"
+    },
+    {
+      "event_id": "evt-memory-traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15-mem-telegram-pref",
+      "trajectory_id": "traj-3f6687ff-3a55-4a26-a7bc-8397d8da7d15",
+      "timestamp": "2026-04-14T06:53:08.731437+00:00",
+      "stage": "execution",
+      "event_type": "memory_injected",
+      "payload": {
+        "record_id": "mem-telegram-pref",
+        "input": "Use my telegram preference for this answer."
+      },
+      "metrics": {},
+      "parent_event_id": null
+    }
+  ],
+  "outcome": {
+    "status": "success",
+    "steps": 1,
+    "latency_ms": 0,
+    "user_corrections": 0,
+    "tool_errors": 0,
+    "notes": "Draft trajectory generated by MemabraRunner with execution hooks."
+  },
+  "reward": {
+    "total": 1.1,
+    "components": {
+      "task_success": 0.8,
+      "retrieval_hit": 0.2,
+      "tool_error": 0.0,
+      "user_correction": 0.0,
+      "latency": 0.0,
+      "context_cost": 0.0,
+      "useful_reuse": 0.1
+    }
+  }
+}