Investigation Tasks: OSSA Delta Discovery
[x] Manifest Validation[x] Define benchmark methodology[x] Identify candidate invocation mechanisms (PHP Validator, Node child process, Node daemon, CI-only)[x] Execute isolated benchmark harnesses (disposable experimental code)[x] Record latency, startup cost, memory, portability, and deployment implications[x] Produce manifest_validation_benchmark.md[x] Discovery Transport[x] Evaluate Drupal-native transports capable of exposing the discovery contract[x] Measure candidates (JSON:API, Core REST, Custom Route + Normalizer)[x] Produce transport_feature_matrix.md[x] Registry UI (Catalog)[x] Evaluate if existing Drupal administrative primitives satisfy the registry capability[x] Measure candidates (Views, EntityListBuilder, Admin listings)[x] Produce registry_capability_matrix.md[x] Tool Binding[x] Evaluate if the OSSA tool JSON schema is a lossless mapping to Drupal primitives[x] Measure against Drupal Tool API definitions[x] Produce tool_mapping_matrix.md