- add PaginationQueryDto<TOrderBy> generic with orderBy and orderDir fields
- add SessionOrderBy, EnvironmentOrderBy, ScenarioOrderBy type aliases
- update session, environment, scenario services and controllers to use typed pagination
- update MCP list_sessions, list_environments, list_scenarios tools to expose orderBy/orderDir
- update tests for all list endpoints to cover page, limit, ordering, and invalid param rejection
- install @nestjs/schedule and register ScheduleModule in AppModule
- add ScenarioSchedulerService with two 1s interval jobs:
- activatePendingRuns: flips pending runs to in_progress
- processPendingStepRuns: executes next pending step run (login or exec),
runs optional validateCode, advances or fails the run accordingly
- on step pass: next waiting step becomes pending; last step pass flips run to pass
- on step fail: remaining steps set to cancelled, run flipped to fail
- add cancelled to RunStepStatus union
- add GET /scenarios/:id/runs with pagination and optional ?status= filter
- add ScenarioRunEntity (pending|in_progress|pass|fail) and ScenarioRunStepEntity (waiting|pending|in_progress|pass|fail)
- add POST /scenarios/:id/run — creates run with first step pending, rest waiting
- add order field to ScenarioStepEntity and ScenarioRunStepEntity for deterministic sequential execution
- findOne and createRun now sort steps/stepRuns by order ASC
- add ScenarioEntity and ScenarioStepEntity with cascade delete
- step fields: type (login|exec), sessionName (required), execCode, validateCode
- login steps create a named session; exec steps consume it by sessionName
- full CRUD controller under /scenarios and /scenarios/:id/steps
- paginated GET /scenarios with page/limit query params returning { data, total, page, limit }
- register ScenarioModule and entities in AppModule