funnel-core
The pure workflow-DAG core of the nornir funnel — events, ids, state, topological readiness, history, the Plan-DAG projection, and the kanban-card board — with no warehouse / iceberg / model / GPU coupling.
Extracted from nornir/src/funnel/ so both nornir (the viz funnel + Plan-DAG panels) and ordning-funnel (idea → case graduation) share one idea→plan→node DAG without dragging in nornir's storage stack. Everything here is deterministic: given the same events + query string the output is bit-identical, so every surface is golden-testable with no warehouse, no clock and no GPU.
The shape
A funnel is a fold of an append-only [Event] log into an in-memory [Funnel]:
Event log ──apply──▶ Funnel ──┬─▶ history() → HistoryItem[] (intake list)
├─▶ cards_from_funnel() → Card[] → board() → Board (kanban)
├─▶ query_cards(q) → Card[] (YouTrack-style smart query)
├─▶ topo_ready() → NextStep[] ("what should I work on next?")
├─▶ simulate_flow() → FlowSim (time-step the DAG to done)
└─▶ PlanDag::from_funnel → PlanDag (nodes + edges + topo, viz)Every projection is pure (&Funnel → value) and BTree-ordered, so the CLI, the gRPC server and the viz all render the same bytes and never disagree.
Benchmarks
The board / smart-query projection (cards_from_funnel → board → query_cards) and PlanDag::from_funnel are the hot paths the funnel UI runs on every render; they are benched under bench/ (nornir bench run funnel-core) and, for the Plan-DAG assembly, by nornir's own nornir.plan_dag_assemble arm.
Tests
Dependency graph
License
MIT OR Apache-2.0.