Brainstorm Unified brainstorming skill combining interactive framework generation, multi-role parallel analysis, and cross-role synthesis into a single entry point with two operational modes. Architecture Overview Data Flow : Key Design Principles 1. Dual-Mode Routing : Interactive mode selection via AskUserQuestion, with parameter-based auto-detection 2. Progressive Phase Loading : Phase files loaded on-demand via markers, not all at once 3. Task Attachment/Collapse : Sub-tasks attached during phase execution, collapsed after completion 4. Session Continuity : All phases share session state…