#5034 "Playbook runs: path and inventory checks in trigger_run, connection vars admin-only, confirm enforced server-side, web actions audited". Ansible runs inside the Steward container, so an operator who could name any playbook path, set ansible_connection=local or ProxyCommand ssh args, or put {{ lookup('pipe', …) }} in a value could run commands on Steward. - steward/ansible/guards.py: check_playbook (the source must list it), check_inventory_scope (steward:* or an inventory file the source has), check_vars_for_role (ansible_* beyond host/port/user/password/become, and any Jinja in a value, are admin-only), changed_vars (an edit is held to the role only for what it changes). - trigger_run applies the path checks, so every run path — web, MCP, alerts, schedules, plugins — gets them. - Variables are checked by role on the web run form, host-page runs, schedule create/update, inventory group/target create/update, and MCP run_playbook / create_schedule / update_schedule. - A steward:confirm playbook needs the confirmation ticked on the server side for a real (non-check) web run, as MCP already required. - Audited: runs, cancel, schedule create/update/enable/disable/delete/ run-now, playbook create/update/delete, inventory group and target create/update/delete (variable names only, never values). One audit_request helper serves the web routes. - The CSRF form guard and the route guard now each test that they fail on a synthetic broken input (rule: a guard must be able to fail). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>