v0.17.6 — Zapier Workflows, Kanban Integration Hub & Screenshot Gallery

Added & Fixed — Web Studio, Zapier Workflows & Kanban Enhancements

• Zapier-style Linear Workflows: Added toggleable linear step-by-step Zapier execution list view in Canvas alongside visual graph views.
• Kanban Execution List & Third-Party Integration Hub: High-density table mode and integration hub for n8n, Zapier, Make, Pipedream, Activepieces, Telegram, Slack, and REST Webhooks.
• Kanban Free Dragging & Stacking Fixes: Restored pointer drag positioning across column boundaries with elevated z-index stacking order.
• Direct Task Box Editing: Implemented 4px pointer drag threshold and added Edit chip on task cards for immediate inspection and field editing.
• Visual Showcase Gallery: Added comprehensive UI screenshot gallery to README.md.