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.

SCOPE.md

@@ -52,8 +52,11 @@ and agents can:
 - **Export a machine-readable bundle** with `reuse-surface export`
 - **Detect overlap candidates** with `reuse-surface overlaps`
 - **Generate a human-readable catalog** with `reuse-surface catalog`
+- **Browse a searchable catalog** at `docs/catalog/search.html` (client-side
+  filter over `registry.json`)
 - **Compose federated indexes** with `reuse-surface federation compose`
 - **Generate relation graphs** with `reuse-surface graph`
+- **Explore relations interactively** at `docs/graph/index.html`
 - **Avoid duplicates** by querying the index and checking overlaps before adding entries
 
 Registry tooling availability is **A3** (CLI). The registry product itself is
@@ -62,8 +65,6 @@ the index, and CLI automation.
 
 ## What Is Not Possible Yet
 
-- Interactive catalog site with live search beyond static HTML export
-- Interactive relation graph UI (Mermaid file only)
 - Network-based federation or cross-org index sync
 - Packaged releases beyond local `pip install -e .` and Gitea CI validation
 
@@ -72,16 +73,19 @@ See `tools/README.md` for command reference.
 ## Current State
 
 - Status: active MVP registry with CLI tooling.
-- Six helix_forge capabilities are registered in `registry/capabilities/`.
+- Twelve helix_forge capabilities are registered in `registry/capabilities/`.
 - `reuse-surface` CLI provides `validate`, `query`, and `export` via
   `pyproject.toml` and `reuse_surface/`.
 - `docs/CapabilityRegistryConcept.md` and `docs/IntentScopeGapAnalysis.md`
   document onboarding and intent-scope tracking.
 - CI validates the registry and composes federation on push/PR.
 - Federated index: `registry/indexes/federated.yaml`.
-- Relation graph: `docs/graph/capability-graph.mmd`.
-- Finished workplans: `REUSE-WP-0001` through `REUSE-WP-0005`.
-- **Self-assessed vector:** `D5 / A3 / C4 / R2` (see gap analysis).
+- Relation graph: `docs/graph/capability-graph.mmd` and explorer at
+  `docs/graph/index.html`.
+- Searchable catalog: `docs/catalog/search.html`.
+- Test suite: `tests/` (pytest).
+- Finished workplans: `REUSE-WP-0001` through `REUSE-WP-0009`.
+- **Self-assessed vector:** `D5 / A3 / C4 / R3` (see gap analysis).
 
 ## Repository Layout
 
@@ -112,8 +116,10 @@ reuse-surface/
 - Registry index: registry/indexes/capabilities.yaml
 - Registry guidance: registry/README.md
 - Generated catalog: docs/CapabilityCatalog.md
+- Searchable catalog: docs/catalog/search.html
 - Federation guide: docs/RegistryFederation.md
 - Relation graph: docs/graph/capability-graph.mmd
+- Graph explorer: docs/graph/index.html
 - CLI reference: tools/README.md
 - Agent instructions: AGENTS.md
 - Workplans: workplans/