Didactopus/docs/learning-graph.md

Merged Learning Graph

Purpose

The merged learning graph is the first learner-facing composite model built from multiple domain packs.

Features in this revision

• namespaced concept keys: pack-name::concept-id
• merged prerequisite DAG
• stage catalog across packs
• project catalog across packs
• optional overrides for previously defined concepts

Override model

A pack manifest may include:

overrides:
  - foundations-statistics::descriptive-statistics

If a pack defines concept descriptive-statistics and lists the namespaced target above, it may replace that concept in the merged graph.

That is intentionally explicit and conservative.

Future work

• merged rubric graph
• stage dependency inference
• learner-specific subgraph extraction
• adaptive sequencing from the merged DAG