关系网络汇聚

<!-- motion-registry-context:{"format":"1.0.0","recipe_id":"data.network-graph-converge","recipe_version":"0.2.0","recipe_source":"recipes/data/network-graph-converge/recipe.yaml"} -->
# Motion Registry Context

<!-- motion-registry-section:recipe-identity:start -->
## Recipe identity
- Recipe ID: data.network-graph-converge
- Schema version: 0.2.0
- Recipe source: recipes/data/network-graph-converge/recipe.yaml
<!-- motion-registry-section:recipe-identity:end -->

<!-- motion-registry-section:motion-intent:start -->
## Motion intent and scope
- Purpose (zh): 具名节点与关系边按顺序构成网络，最后突出一个焦点及其直接连接。
- Purpose (en): Named nodes and relationship edges form a graph in sequence before one focus and its direct connections are emphasized.
- Scope: effect
- Complexity: advanced
- Subjects: mixed, shape
- Intents: explain, focus
- Use cases: data-story, knowledge-video, tutorial, presentation
- Recipe capabilities: named-nodes, relationship-edges, focus-neighbors, deterministic-layout
<!-- motion-registry-section:motion-intent:end -->

<!-- motion-registry-section:inputs:start -->
## Inputs
- nodes: string (required; default=ARTIST|ALBUM|TOUR|FANS|CITY|STREAMS) — Pipe-delimited node labels in source order.
- focus_label: string (required; default=TOUR) — Node label receiving the final focus.
- headline: string (required; default=Relationship signal) — Explanatory headline.
<!-- motion-registry-section:inputs:end -->

<!-- motion-registry-section:normalized-timeline:start -->
## Normalized motion timeline (0 to 1)
- 0.06–0.24 · graph.fade · opacity.fade → graph · parameters={"from":0,"to":1}
- 0.14–0.50 · nodes.reveal · collection.reveal → nodes · parameters={"order":"source","opacity_from":0,"opacity_to":1}
- 0.14–0.50 · nodes.stagger · collection.stagger → nodes · parameters={"order":"source","fraction":0.12}
- 0.34–0.68 · edges.draw · path.draw → edges · parameters={"from":0,"to":1}
- 0.64–0.84 · focus.settle · spring.settle → focus · parameters={"from":0.82,"to":1,"strength":"normal"}
- 0.86–1.00 · graph.hold · state.hold → graph · parameters={}
<!-- motion-registry-section:normalized-timeline:end -->

<!-- motion-registry-section:output-envelope:start -->
## Output envelope
- Aspect ratios: 16:9, 9:16, 1:1
- Duration: min 3s; preferred 3.8s; max 5s
<!-- motion-registry-section:output-envelope:end -->

<!-- motion-registry-section:acceptance:start -->
## Acceptance constraints
- named-nodes: Every visible node has a bounded readable label.
- relationship-edges: Deterministic edges visibly connect named nodes without covering their labels.
- focus-neighbors: The final focus highlights one node and its direct neighbors rather than the whole graph.
- stable-hold: The final graph is still and readable during the hold.
<!-- motion-registry-section:acceptance:end -->

<!-- motion-registry-section:handoff-invariants:start -->
## Handoff invariants
- Preserve the subject, input meaning, event order, overlaps, final state, and approximate normalized timing.
- Keep the implementation deterministic and retain a readable, stable final hold.
- Treat the Recipe document as the source of truth; do not infer engine APIs in this shared core.
<!-- motion-registry-section:handoff-invariants:end -->