feat(ql3): establish 3.0 incubation baseline

back/runtime/ports/projectPolicyRepository.ts

@@ -0,0 +1,26 @@
+import type {
+  PolicySubject,
+  ProjectPolicySnapshot,
+  ProjectRoleBindingRecord,
+} from '../domain/projectPolicy';
+
+export interface AppendProjectRoleBindingCommand {
+  expectedCurrentVersion: number;
+  binding: ProjectRoleBindingRecord;
+}
+
+export interface AppendProjectRoleBindingResult {
+  status: 'inserted' | 'existing';
+  binding: Readonly<ProjectRoleBindingRecord>;
+}
+
+export interface ProjectPolicyRepository {
+  resolve(
+    projectId: string,
+    subject: Readonly<PolicySubject>,
+  ): Promise<Readonly<ProjectPolicySnapshot> | null>;
+
+  append(
+    command: AppendProjectRoleBindingCommand,
+  ): Promise<AppendProjectRoleBindingResult>;
+}