Implement wisp-based config storage at .beads-wisp/config/<rig>.json for local-only settings that are never synced via git. API: - Get(key) - returns value or nil - Set(key, value) - stores value - Block(key) - marks key as blocked (NullValue equivalent) - Unset(key) - removes from values and blocked - IsBlocked(key) - checks if blocked (gt-3w685) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>