Add queryable capability contracts and checked GraphQL artifacts

proto/camino/schema.proto

@@ -70,4 +70,75 @@ message PersistencePlan {
   repeated AtomConformance conformances = 4;
   repeated StateAttachment states = 5;
   repeated EdgeAttachment edges = 6;
+  repeated InstalledQuery queries = 7;
+}
+
+// Immutable checked query IR. Installed only with the checked persistence plan;
+// query callers select its ID, never send or modify these definitions.
+message QueryArgument {
+  oneof value {
+    string variable = 1;
+    string literal_json = 2;
+    QueryArgumentList list = 3;
+    QueryArgumentObject object = 4;
+  }
+}
+message QueryArgumentList {
+  repeated QueryArgument values = 1;
+}
+message QueryArgumentObject {
+  map<string, QueryArgument> fields = 1;
+}
+message QueryCondition {
+  bool include = 1;
+  QueryArgument value = 2;
+}
+message QuerySelection {
+  string name = 1;
+  string key = 2;
+  string interface_revision_id = 3;
+  string member_id = 4;
+  string target_interface_revision_id = 5;
+  repeated QueryCondition conditions = 6;
+  map<string, QueryArgument> arguments = 7;
+  repeated QuerySelection selection = 8;
+}
+message QueryReadBinding {
+  string atom_id = 1;
+  string interface_revision_id = 2;
+  string member_id = 3;
+  string getter_operation_id = 4;
+  string slot_id = 5;
+  string edge_type_id = 6;
+  string projection_id = 7;
+  bool rpc = 8;
+  string watch_start_operation_id = 9;
+  string watch_stop_operation_id = 10;
+  string field_name = 11;
+  string value_type_json = 12;
+  Cardinality cardinality = 13;
+}
+message QueryBudgets {
+  uint32 rows = 1;
+  uint32 depth = 2;
+  uint32 result_bytes = 3;
+  uint32 candidates = 4;
+  uint32 rpc_calls = 5;
+  uint32 concurrency = 6;
+  uint32 deadline_ms = 7;
+}
+message InstalledQuery {
+  string id = 1;
+  string definition_digest = 2;
+  string binding_digest = 3;
+  string root_interface_revision_id = 4;
+  repeated QuerySelection selection = 5;
+  repeated QueryReadBinding bindings = 6;
+  QueryBudgets budgets = 7;
+  string variables_type_json = 8;
+  string output_type_json = 9;
+  map<string, QueryArgument> variable_defaults = 10;
+  bool watch = 11;
+  uint32 polling_interval_ms = 12;
+  bool rpc_predicate_or_order = 13;
 }