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README.md

@@ -45,13 +45,22 @@ Three dependency layers (declarations, modules, namespaces) with precomputed net
 | `mechanisms.ndjson` | — | Lean language mechanism extractions |
 | `tactic_usage.ndjson` | — | Per-declaration tactic usage profiles |
 
-### Enriched Data (v2)
+### Module and Namespace Graphs (v2)
+
+| File | Rows | Description |
+|------|------|-------------|
+| `v2/mathlib_module_nodes.csv` | 7,564 | Module (source file) list with decl_count |
+| `v2/mathlib_module_edges.csv` | 20,881 | Module import edges (source, target) |
+| `v2/mathlib_namespace_nodes_k2.csv` | 10,097 | Depth-2 namespace list with decl_count |
+| `v2/mathlib_namespace_edges_k2.csv` | 332,081 | Namespace edges with weight (aggregated from declaration edges) |
+
+### Enriched Metrics (v2)
 
 | File | Rows | Columns | Description |
 |------|------|---------|-------------|
 | `v2/mathlib_nodes_enriched.csv` | 308,129 | 11 | Deduplicated declarations with network metrics |
-| `v2/mathlib_modules.csv` | 7,564 | 10 | Per-module (source file) metrics |
-| `v2/mathlib_namespaces_k2.csv` | 10,097 | 9 | Per-namespace (depth-2) metrics |
+| `v2/mathlib_modules.csv` | 7,564 | 10 | Per-module precomputed metrics |
+| `v2/mathlib_namespaces_k2.csv` | 10,097 | 9 | Per-namespace precomputed metrics |
 | `v2/mathlib_summary.json` | — | — | Headline statistics for all three graph levels |
 
 ## Quick Start
@@ -70,6 +79,35 @@ print(nodes.nlargest(5, "pagerank")[["name", "kind", "in_degree", "pagerank"]])
 
 ## Schema
 
+### v2/mathlib_module_nodes.csv
+
+| Column | Type | Description |
+|--------|------|-------------|
+| module | str | Dotted module name (e.g., `Mathlib.Algebra.Group.Defs`) |
+| decl_count | int | Number of declarations defined in this module |
+
+### v2/mathlib_module_edges.csv
+
+| Column | Type | Description |
+|--------|------|-------------|
+| source | str | Importing module |
+| target | str | Imported module |
+
+### v2/mathlib_namespace_nodes_k2.csv
+
+| Column | Type | Description |
+|--------|------|-------------|
+| namespace | str | Depth-2 namespace (e.g., `Mathlib.Algebra`) |
+| decl_count | int | Declarations in this namespace |
+
+### v2/mathlib_namespace_edges_k2.csv
+
+| Column | Type | Description |
+|--------|------|-------------|
+| source | str | Source namespace |
+| target | str | Target namespace |
+| weight | int | Number of declaration-level edges between these namespaces |
+
 ### v2/mathlib_nodes_enriched.csv
 
 | Column | Type | Description |