Update permissions handling and enhance Guard functionality

- Bump `jsonv-ts` dependency to 0.8.6.
- Refactor permission checks in the `Guard` class to improve context validation and error handling.
- Update tests to reflect changes in permission handling, ensuring robust coverage for new scenarios.
- Introduce new test cases for data permissions, enhancing overall test coverage and reliability.

app/src/auth/authorize/Permission.ts

@@ -54,6 +54,8 @@ export class Permission<
    }
 
    parseContext(ctx: ContextValue, opts?: ParseOptions) {
+      // @todo: allow additional properties
+      if (!this.context) return ctx;
       try {
          return this.context ? parse(this.context!, ctx, opts) : undefined;
       } catch (e) {