When users run `claude` directly at the town root instead of
`gt mayor start`, Claude wasn't receiving the Mayor delegation
protocol because `gt prime` never ran.
Root cause: `gt install` created CLAUDE.md but not the
.claude/settings.json with SessionStart hooks that run `gt prime`.
This adds `claude.EnsureSettingsForRole(absPath, "mayor")` to
`gt install` to ensure the Mayor always gets proper Claude settings
with hooks that enforce the delegation protocol.
Fixes#84🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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