Start Core Hub FastAPI replacement foundation

contracts/catalogs/event-types.json

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+[
+  {
+    "slug": "interaction.event",
+    "name": "Interaction Event",
+    "description": "Generic cross-hub interaction event."
+  },
+  {
+    "slug": "workplan.progress",
+    "name": "Workplan Progress",
+    "description": "Progress or task evidence from a file-first workplan."
+  },
+  {
+    "slug": "evidence.recorded",
+    "name": "Evidence Recorded",
+    "description": "Non-secret operational evidence attached to a hub workflow."
+  }
+]

contracts/catalogs/policy-scopes.json

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+[
+  {
+    "slug": "public-read",
+    "name": "Public Read",
+    "description": "Unauthenticated read access for public catalogs and docs."
+  },
+  {
+    "slug": "hub-write",
+    "name": "Hub Write",
+    "description": "Authenticated write access for hub-owned resources."
+  },
+  {
+    "slug": "operator-admin",
+    "name": "Operator Admin",
+    "description": "Privileged operator scope for administration."
+  }
+]

contracts/catalogs/widget-types.json

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+[
+  {
+    "slug": "status-summary",
+    "name": "Status Summary",
+    "description": "Compact status summary for an operator console."
+  },
+  {
+    "slug": "workplan-board",
+    "name": "Workplan Board",
+    "description": "Board view over active workplans and tasks."
+  },
+  {
+    "slug": "event-stream",
+    "name": "Event Stream",
+    "description": "Chronological stream of interaction and progress events."
+  }
+]