docs(odds): document full selection_type enum + undocumented /odds fields

[paperclip-resolver]

Fixes SHA-3434 (parent: SHA-3428 — rogervtay 6-category bug report; customer Crisp session_c8594804).

Summary

Reconciles the published /odds schema with what the Go API actually emits.

E1 — selection_type enum. Docs previously listed only home, away, over, under. Real wire values also include yes, no, even, odd, draw, other, plus compound forms emitted by multi-axis markets (home_over, away_under, home_yes, home_draw, home_r1, …). Added a ### Selection types section in all four locales and a 23-value enum in openapi.json. Both make clear that long-tail forms (correct_score "2_1", set_betting, winning_margin shapes, etc.) pass through verbatim and should be treated as opaque, not rejected.

E2 — undocumented /odds row fields. Per-field audit against sharp-api-go/main.go:603–664 (the Odds response struct) and a live /api/v1/odds Polymarket sample:

Field	Decision	Notes
event_uuid	stable	Canonical atlas event UUID.
team_side	stable	Raw side hint; lets clients get the team axis on compound selection_type without parsing.
is_alternate_line	stable	Stable on /opportunities/ev today; rolling out to /odds rows via SHA-3431 (B1 fix). Documented now so the customer + SDKs can wire to it.
wire_received_at	stable	Pipeline-arrival stamp. Differentiated from last_seen_at and odds_changed_at.
external_event_id	stable	Sportsbook's own event ID.
deep_link	stable	Resolver URL; state= query param documented for state-routed books.
market_id, selection_id	stable	Native sportsbook IDs.
volume, volume_24h, open_interest	stable, exchange-only	Betfair / Novig / ProphetX / Polymarket.
home_pitcher, away_pitcher	stable, MLB-only	Already in struct; previously undocumented.
polymarket_resolution	stable, Polymarket-only	UMA optimistic-oracle terminal status with the 5-value enum.

No field was filtered from the response — every flagged field is genuinely useful and stable enough to document.

Files

• content/{en,es,de,pt-BR}/api-reference/odds.mdx — schema table + ### Selection types subsection
• public/openapi.json — Odds schema: selection_type.enum, 12 new properties

Verification

• pnpm typecheck clean
• pnpm build (Nextra, 4 locales, 223 pages) — green
• pnpm check-links — 340/340 internal links resolve; 1 unrelated external (github.com/Mlaz-code/api-adapters, pre-existing)
• Live sample probe against /api/v1/odds (Polymarket + Pinnacle rows on OVH) confirms all 9 E2 fields are emitted as documented

Test plan

• Vercel preview build green
• Spot-check anchor links: #selection-types, #tipos-de-selección, #selektionstypen, #tipos-de-seleção
• Confirm openapi.json renders correctly in Scalar / the openapi.mdx preview page