feat: add odds:locked WebSocketEventType (SHA-3803)

Supplementary stream event carrying the suspended subset of a delta (1:1 with
OpticOdds locked-odds). Rows also arrive in the normal odds update with
is_active=false. Pairs with sharp-api-go #725.

Type: feat

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: paperclip-resolver[bot]

CHANGELOG.md

@@ -9,6 +9,9 @@ All notable changes to `@sharp-api/client` are documented here.
 - `NormalizedOdds.is_active` (boolean). `false` indicates the market is
   suspended/closed with the price frozen — mirrors OpticOdds `locked-odds` but
   as a queryable field. Absent on the wire is treated as `true`.
+- `'odds:locked'` `WebSocketEventType` — supplementary stream event carrying the
+  suspended subset of a delta (1:1 with OpticOdds `locked-odds`). The rows also
+  arrive in the normal odds update with `is_active: false`.
 
 ### Backward compatibility
 

src/index.ts

@@ -997,6 +997,7 @@ export type WebSocketEventType =
   | 'initial'
   | 'snapshot_complete'
   | 'odds_update'
+  | 'odds:locked'
   | 'ev:detected'
   | 'ev:expired'
   | 'arb:detected'