feat(FN-2241): add review level selection in task creation and editing

- Extend core task types/store and dashboard API route handling to persist task reviewLevel
- Add review level controls to TaskForm, NewTaskModal, and TaskDetailModal flows
- Improve workflow step selector presentation in WorkflowResultsTab and styles for clearer review settings UX
- Document the new review level behavior and add route/form/modal tests to cover create and edit scenarios

packages/core/src/store.ts

@@ -1682,6 +1682,7 @@ export class TaskStore extends EventEmitter<TaskStoreEvents> {
       planningModelProvider: input.planningModelProvider,
       planningModelId: input.planningModelId,
       thinkingLevel: input.thinkingLevel,
+      reviewLevel: input.reviewLevel,
       missionId: input.missionId,
       sliceId: input.sliceId,
       steps: [],

packages/core/src/types.ts

@@ -829,6 +829,8 @@ export interface TaskCreateInput {
   assignedAgentId?: string;
   /** Optional explicit user assignment for this task (used during review handoff) */
   assigneeUserId?: string;
+  /** Review level for task execution — controls review rigor: 0=None, 1=Plan Only, 2=Plan and Code, 3=Full */
+  reviewLevel?: number;
 }
 
 // ── Settings Scope Types ────────────────────────────────────────────────