Background branding agent for on-demand research and availability checks

[krisrowe]

Goal

Add an agent to the product-branding plugin that can run background branding work — name research, availability checks, competitive analysis — when explicitly requested.

Behavior

• On-demand only — never runs automatically or proactively
• Triggered by the user (e.g., "check availability for these names in the background" or via a skill/command)
• Reports results when complete, does not take action without confirmation

Capabilities

• Batch name availability checks (PyPI, npm, GitHub org, domain, etc.)
• Background research on naming candidates (competition, SEO, trademark conflicts)
• Update brand records with findings

Not in scope

• Autonomous decision-making about brand choices
• Registering or purchasing anything without explicit approval
• Running on any schedule or hook — strictly user-initiated