fix(betting): prevent events from exposing failed transactions

[thelight08]

Summary

• defer single-bet event publication until the final accounting snapshot completes
• queue batch bet events until every bet and the idempotency guard have committed
• repair the duplicated workspace entries in Cargo.lock so Cargo can validate the workspace

Validation

• git diff --check
• focused predictify-hybrid test build started; the workspace compile is lengthy

Closes #20

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[thelight08]

@dultimateade Issue #20 is implemented and pushed. Bet events are deferred until the complete transaction path succeeds, including the batch idempotency guard, so failed/auth-rejected calls cannot expose misleading events. The PR includes Closes #20; please review the security behavior and the Cargo.lock repair.