Replace scalar region/city/neighborhood with hasMany arrays so nuclei can span multiple Bahia municipalities while keeping neighborhoods scoped to a single city.
Add the 11 UX Pilot design pairs (.png + .html) under
docs/design-refs/latest/ and link each to its roadmap item and plan.
Record the decision that UX/structure is the reference but the old
palette is not — implementation uses the light campaign theme tokens.
Adds electoral nuclei, leaderships, updates, and WhatsApp invite flows behind campaign auth, plus the consolidated schema migration that Vercel applies on deploy.
