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concept-graph

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Use when an approved tutorial spec exists and the run needs a deterministic prerequisite graph before module planning. **Trigger**: concept graph, prerequisite graph, dependency graph, 概念图, 先修关系. **Use when**: `source-tutorial` 的 C2，已有 `output/TUTORIAL_SPEC.md`，需要把教程概念转成可排序的 DAG。 **Skip if**: 还没有 tutorial spec。 **Network**: none. **Guardrail**: 只做结构，不写 reader-facing prose；图必须保持无环。

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Source SKILL.md: https://github.com/WILLOSCAR/research-units-pipeline-skills/blob/HEAD/.codex/skills/concept-graph/SKILL.md

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Concept Graph

Materializes the tutorial spec's structured concept inventory into outline/concept_graph.yml.

Input

  • output/TUTORIAL_SPEC.md

Output

  • outline/concept_graph.yml

Contract

The graph must contain:

  • nodes: {id, title, summary, source_ids, objective_refs}
  • edges: {from, to} meaning prerequisite order

Script boundary

scripts/run.py should:

  • load structured spec data
  • emit stable node ids and prerequisite edges
  • fail if the result would be cyclic or empty

Do not duplicate spec-parsing heuristics in multiple places; keep them in shared tutorial tooling.

Acceptance

  • outline/concept_graph.yml exists
  • all nodes have stable ids
  • the graph is a DAG

Non-goals

  • module clustering
  • exercise generation
  • tutorial prose