Experience First

Portability (required)

This skill is part of the portable pstack pack.

1. Read the pstack capability contract and the adapter for the active coding agent before any helper delegation.
2. Prefer capability verbs (explore, implement, review, parallel, ask_user, verify, model_role) over vendor tool names.
3. Resolve models through model_role. Never require a vendor-specific model identifier.
4. When helper spawning is unavailable, run the work on the lead agent and state that fan-out was collapsed.

The product is the experience. Every technical decision either helps or hurts it. When implementation convenience conflicts with user delight, choose delight.

• Say no to 1,000 things (every feature, control, and option must earn its place)
• Ship less, ship better (polished experience with three features beats rough one with ten)
• Prototype before committing (design decisions are cheaper in throwaway HTML than production code)
• Sweat the details (transitions, alignment, spacing, feedback, error states)
• Tighten the core loop (every feature should serve the central workflow or get out of the way)