Add a sponsorship home (SPONSORS.md) with Backer/Bronze/Silver/Gold tiers —
described as placements/benefits, with $ amounts left as `<!-- OWNER: set
amounts -->` placeholders (no invented prices). Primary "become a sponsor"
path is a prefilled GitHub issue form (.github/ISSUE_TEMPLATE/sponsor.yml:
name/org, logo URL, tier, contact), with Ko-fi/PayPal as direct paths and an
OWNER placeholder for a public contact email.
README gains a Sponsors subsection (logo-slot placeholder + SPONSORS.md link),
a Sponsors nav entry, and a note about GitHub's native Sponsor button.
FUNDING.yml adds the SPONSORS.md link alongside the existing ko_fi/PayPal.
Keeps the honest "agent bills" framing; sponsorship is a thank-you, not a
paywall — OmniVoice stays fully free and AGPL-3.0. Docs-only; no fabricated
sponsors, prices, or testimonials.
Co-authored-by: mergetest <test@local>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
