stop-hook-blocks-on-brainstorming-mid-flow

The session-stop hook correctly identifies a pure planning session as APPROVE-eligible, but the brainstorming skill’s section-by-section user validation requirement creates a structural conflict: the hook keeps blocking because the workflow is mid-flow awaiting user input. This results in a repetitive loop where the hook fires on every idle turn. A future fix should detect brainstorming mid-flow state and either APPROVE the stop or surface a single clear prompt to the user rather than repeating the block message.