feat(ecosystem): hub-core library lane for three-repo stack (HUB-WP-0003)

Add slugify_or_default for core-hub parity, bump to 0.2.0, document ecosystem
position in INTENT/SCOPE/README, wire capability relations to state-hub and
core-hub, and extend utils tests. Part of CUST-WP-0057 consolidation.

tests/test_utils.py

@@ -2,7 +2,14 @@ import pytest
 from sqlalchemy import select
 
 from hub_core.models.domain import Domain
-from hub_core.utils import PageParams, apply_pagination, normalize_trailing_slash, resolve_repo_path, slugify
+from hub_core.utils import (
+    PageParams,
+    apply_pagination,
+    normalize_trailing_slash,
+    resolve_repo_path,
+    slugify,
+    slugify_or_default,
+)
 
 
 class RepoStub:
@@ -19,6 +26,18 @@ def test_slugify_rejects_empty_slug() -> None:
         slugify(" !!! ")
 
 
+def test_slugify_or_default_matches_core_hub_bootstrap() -> None:
+    assert slugify_or_default("ops-hub") == "ops-hub"
+    assert slugify_or_default("Ops Hub Bootstrap") == "ops-hub-bootstrap"
+    assert slugify_or_default("!!!") == "resource"
+    assert slugify_or_default("!!!", default="fallback") == "fallback"
+
+
+def test_slugify_or_default_aligns_with_core_hub_api_v2_name_field() -> None:
+    # core-hub: slug=body.get("slug") or slugify(body["name"])
+    assert slugify_or_default("ops-hub") == "ops-hub"
+
+
 def test_page_params_bounds() -> None:
     assert PageParams(limit=10, offset=20).limit == 10
     with pytest.raises(ValueError, match="limit"):