#15 [HIGH] Missing tenant_id indexes on task/run tables

RESOLVED: tenant_id indexes already exist in highway_0.0.07.sql (dynamic indexes for absurd t_/r_/c_/e_/w_ tables) and highway_0.0.23_add_tenant_id.sql (workflow_run, workflow_state, absurd_event_log, workflow_schedules, workflow_signals, human_approvals, task_execution_log). No action needed.