Storybook authoring

Read applicable AGENTS.md and their declared adapter alias, otherwise .agents/skills/storybook-authoring/SKILL.md from the repository root if present. Local policy overrides these defaults; do not reload an already-read adapter or canonical skill.

Apply test-authoring.

• Show a meaningful supported state with realistic args and fixtures.
• Keep story data local and deterministic.
• Expose an important visual or interaction variant.
• Add browser-mode coverage where it catches behavior a unit test cannot see.
• Do not use a story as end-to-end setup or as production data handling.
• Read component coverage for direct stories and browser isolation.

Consumer wrapper owns: Storybook configuration, exclusions, visual baselines, and commands.