refactor: replace Moderator function with ModeratorTable in WorkflowDefinition (#200)

- WorkflowDefinition.moderator → WorkflowDefinition.table (ModeratorTable)
- Moderator type + tableToModerator no longer exported from protocol/runtime
- tableToModerator internalized in workflow-execute engine layer
- WorkflowDescriptor gains graph: WorkflowGraph (auto-extracted from table)
- buildDescriptor extracts serializable graph edges from ModeratorTable
- validateWorkflowDescriptor validates graph structure
- All templates (develop, solve-issue) export table directly
- CLI init scaffold updated to use ModeratorTable
- 99 tests pass, 0 failures

packages/workflow-template-develop/package.json

@@ -15,5 +15,8 @@
     "@uncaged/workflow-register": "workspace:*",
     "@uncaged/workflow-runtime": "workspace:*",
     "zod": "^4.0.0"
+  },
+  "devDependencies": {
+    "@uncaged/workflow-protocol": "workspace:*"
   }
 }