Complete WP-0006 through WP-0009: registry expansion, catalog, graph, tests

Register six new capabilities (12 total), add searchable catalog UI and graph
explorer, introduce pytest suite with CI fail-on-warnings, and close gap
analysis priorities 13 and 16. WP-0010 remains backlog for network federation.

.gitea/workflows/ci.yml

@@ -19,10 +19,18 @@ jobs:
           python-version: "3.12"
 
       - name: Install package
-        run: python -m pip install -e .
+        run: python -m pip install -e ".[dev]"
 
       - name: Validate capability registry
-        run: reuse-surface validate --relations
+        run: reuse-surface validate --relations --fail-on-warnings
 
       - name: Compose federated index
-        run: reuse-surface federation compose
+        run: reuse-surface federation compose
+
+      - name: Generate catalog and graph
+        run: |
+          reuse-surface catalog
+          reuse-surface graph --check --fail-on-warnings
+
+      - name: Run tests
+        run: pytest -q