Skill System Gate

Enforce a fail-closed gate before experiment registration and provide read-only registry safety/status checks.

Decision Matrix

Task Intent	Operation	Primary Backend	Use When
Validate repository artifacts against configurable gate rules	`validate`	`scripts/gate_validate.py`	Before close-gate decisions or deterministic policy checks
Validate experiment implementation and logs against gate rules	`validate-experiment`	`preprocess_lib.gate_engine`	Legacy GNN/FraudDetect pipeline checks
Check whether registry state is safe for rerun/reset	`verify-registry`	`db_registry.DBExperimentsDB`	Before any manual reset/rerun action
View queue health and state counts	`status`	`db_registry.DBExperimentsDB`	Need a quick dashboard of current experiment states