flowchart TB
    user["平台用户"] --> entry["portal-web / Project Page / Web Component"]
    entry --> gateway["Public API Gateway"]
    gateway --> api["platform-api<br/>Java + Spring Boot"]

    subgraph question["在线问答"]
        context["MySQL 权威状态<br/>Identity / Grant / Session / Active Release"]
        runtime["assistant-runtime<br/>Python + FastAPI"]
        revocation["Redis Online<br/>撤回与短期状态复核"]
        bm25["Elasticsearch<br/>BM25 Top-K"]
        vector["PostgreSQL / pgvector<br/>Vector Top-K"]
        kernel["受约束 RAG Domain Kernel<br/>RRF / Reranker / Evidence / Prompt"]
        models["Model Access<br/>Generator / Grounding"]
        validated["Validated Claim / Citation<br/>Evidence-only / Refusal"]

        context -->|"不可变 Execution Context"| runtime
        runtime --> revocation
        revocation --> bm25
        revocation --> vector
        bm25 --> kernel
        vector --> kernel
        kernel --> models
        models --> validated
    end

    api -->|"提问、搜索"| context
    validated -->|"platform-api 审计并代理 SSE"| entry

    subgraph publishing["知识接入与发布"]
        sourceAdapter["platform-api Source Storage Adapter<br/>S3-compatible 预签名 PUT / HEAD + SHA-256"]
        source["OSS Source Zone<br/>原始文件与 Source Revision"]
        sourceState["MySQL<br/>元数据、任务状态与 Outbox"]
        events["Kafka<br/>可重放领域事件"]
        worker["batch-worker<br/>Python + Celery"]
        artifacts["OSS Governance / Chunk / Evaluation Assets"]
        bm25Staging["Elasticsearch<br/>BM25 Staging Projection"]
        vectorStaging["PostgreSQL / pgvector<br/>Vector Staging Projection"]
        evaluation["Retrieval / Answer / ACL / Leakage 评测"]
        approval["人工审批"]
        activator["Projection Activator"]
        bm25Projection["Elasticsearch<br/>Published-ready BM25 Projection"]
        vectorProjection["PostgreSQL / pgvector<br/>Published-ready Vector Projection"]
        gate["双投影联合准备门禁"]
        active["MySQL 原子切换<br/>Active Knowledge Release"]

        sourceAdapter -->|"预签名 PUT 写入"| source
        source -->|"完成确认时 HEAD + SHA-256 校验"| sourceAdapter
        source --> sourceState
        sourceState --> events
        events --> worker
        worker --> artifacts
        artifacts --> bm25Staging
        artifacts --> vectorStaging
        bm25Staging --> evaluation
        vectorStaging --> evaluation
        evaluation --> approval
        approval --> activator
        activator --> bm25Projection
        activator --> vectorProjection
        bm25Projection --> gate
        vectorProjection --> gate
        gate --> active
    end

    api -->|"上传、治理、发布"| sourceAdapter
    active -.->|"固定在线请求使用的 Release"| context
    bm25Projection -.->|"Active Release 选中"| bm25
    vectorProjection -.->|"Active Release 选中"| vector

    subgraph revoking["紧急撤回"]
        revokeState["MySQL 提交权威撤回状态"]
        tombstone["Kafka Tombstone"]
        cleanup["batch-worker<br/>Projection Cleanup"]

        revokeState -->|"同步阻断"| revocation
        revokeState --> tombstone
        tombstone --> cleanup
    end

    api -->|"管理员撤回"| revokeState
    cleanup -->|"删除 / Tombstone"| bm25Projection
    cleanup -->|"删除 / Tombstone"| vectorProjection