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Roll L2 flow up to domain->domain adjacency (11 domains) with anchor forms, form/tool counts, and the matching AI-agent scene. This is the coarse L1 tier meant to live in the agent system prompt for routing; L2/L3 stay as on-demand tools. Domains align to ai_agent's 8 business 智能体 (+ 基础资料/设备/其他 -> ERP代理人).
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Materialize each form's L2 neighbors (upstream/downstream documents) and L3 neighbors (referenced entity tables) so the retriever can expand a vector-recalled form-card into a subgraph context via a single JOIN. 702 forms have downstream, 476 upstream, 1467 reference entity tables.
