SchemaMapResponseDto

{
    "generatedAt": "2026-02-26T14:30:00.000Z",
    "stats": {
        "totalMongoFields": 156,
        "totalChColumns": 164,
        "totalEsFields": 20,
        "totalCabinetDtoFields": 52,
        "totalAdminDtoFields": 71,
        "totalWidgetDtoFields": 0,
        "scenarioCount": 14,
        "mappedFields": 142,
        "normalizedFields": 24,
        "jsonBlobFields": 6,
        "derivedFields": 2,
        "technicalFields": 1,
        "unmappedChColumns": 3,
        "unmappedMongoFields": 5
    },
    "diagram": {
        "nodes": [
            {
                "id": "ch_events",
                "label": "CH events",
                "type": "source",
                "group": "write",
                "fieldCount": 164,
                "description": "MergeTree — append-only log (flat)"
            }
        ],
        "edges": [
            {
                "id": "mongo_to_kafka",
                "source": "mongodb",
                "target": "kafka",
                "label": "nested → flat",
                "description": "ClickHouseEventMapperService denormalizes nested objects",
                "fieldCount": 202
            }
        ]
    },
    "fields": [
        {
            "group": "costs",
            "mongoPaths": [
                "source_context.data_tg.chat_id",
                "source_context.data_max.chat_id"
            ],
            "parsedFields": [
                "source_context.data_tg.chat_id",
                "source_context.data_max.chat_id"
            ],
            "chColumn": "costs_text_prompt_tokens",
            "chType": "UInt32",
            "esField": "content",
            "cabinetDtoFields": [
                "costs.text.prompt_tokens"
            ],
            "adminDtoFields": [
                "costs.text.prompt_tokens"
            ],
            "widgetDtoFields": [
                "message.content"
            ],
            "transform": "identity",
            "mappingKind": "direct",
            "scenarioIds": [
                "source_tg_topic",
                "source_max_dialog"
            ],
            "notes": [
                "button_click_message_id_kind is an internal ClickHouse discriminator used to restore button_click.message_id as number|string without loss."
            ],
            "mvSources": [
                "event_summary_state_full_mv",
                "event_summary_state_patch_mv"
            ]
        }
    ],
    "stageCoverage": [
        {
            "stage": "mongo_to_ch",
            "mode": "coverage",
            "description": "Canonical Mongo/event paths that are written into ClickHouse columns.",
            "total": 250,
            "covered": 243,
            "uncovered": [
                "string"
            ],
            "excluded": [
                "string"
            ]
        }
    ],
    "scenarioCoverage": [
        {
            "scenarioId": "source_tg_topic",
            "description": "Telegram topic source with Telegram delivery branch",
            "mongoFields": 210,
            "mappedMongoFields": 205,
            "mappedChColumns": 190,
            "parsedFields": 175,
            "cabinetFields": 150,
            "adminFields": 180,
            "widgetFields": 42
        }
    ],
    "mvPipeline": [
        {
            "name": "event_status_state_patch_mv",
            "triggerTypes": [
                "message_delivered",
                "message_read"
            ],
            "updatedFields": [
                "status_is_delivered",
                "status_is_read"
            ],
            "preservedSource": "new_event",
            "versionStrategy": "append-only, latest by inserted_at",
            "description": "Writes delivery/read/delete patches into event_status_state"
        }
    ],
    "mvConsistency": {
        "allConsistent": true,
        "mvChecks": [
            {
                "name": "event_identity_state_mv",
                "totalColumns": 204,
                "missingColumns": [
                    "string"
                ],
                "extraColumns": [
                    "string"
                ],
                "isConsistent": true
            }
        ]
    },
    "coverageNotes": [
        "string"
    ],
    "unmappedChColumns": [
        "entity_key"
    ],
    "unmappedMongoFields": [
        "string"
    ]
}