feat: implement institutional service catalogue

README.md

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+# GovOPlaN Services
+
+<!-- govoplan-repository-type:start -->
+**Repository type:** module (domain).
+<!-- govoplan-repository-type:end -->
+
+`govoplan-services` owns the institution's versioned service catalogue: the
+audience, prerequisites, evidence, legal bases, channels, responsibility,
+jurisdiction, forms, case/workflow/result bindings, remedies, service levels,
+publication state, and availability requirements of each service.
+
+Portal presents services and Cases starts concrete matters, but both consume
+the same exact provider-owned definition through Core contracts. Neither module
+reads Services tables.
+
+See [docs/SERVICES_DOMAIN.md](docs/SERVICES_DOMAIN.md).
+
+## Runtime Bindings
+
+Services stores bindings but does not execute them. Portal resolves the exact
+Service revision and delegates to the matching owner capability:
+
+- `case`: a Cases-owned catalogue or intake reference;
+- `form`: an exact `<form-id>/<form-revision>` reference launched by Forms
+  Runtime;
+- `workflow`: an exact Workflow Engine definition binding; and
+- `url` or `external`: a validated redirect target.
+
+Consumers must retain the exact Service revision and binding. A missing owner
+launcher makes the Service unavailable; it must not fall back to an unrelated
+runtime.