fix: migrate getMarketMetadata to /markets/keyset endpoint - #3
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Polymarket is deprecating the flat /markets endpoint on 2026-05-01 in
favour of the cursor-paginated /markets/keyset. Our use case is a
point lookup (single tokenId, not a list scan), and the new endpoint
accepts the same clob_token_ids filter — only the response shape
changes from a bare array to { markets: [...] }.
Unwrapping the envelope keeps the effect's output shape identical,
so call sites (ensureMarket in CTFExchangeV2/Exchange handlers) need
no changes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Polymarket is deprecating the flat /markets endpoint on 2026-05-01 in favour of the cursor-paginated /markets/keyset. Our use case is a point lookup (single tokenId, not a list scan), and the new endpoint accepts the same clob_token_ids filter — only the response shape changes from a bare array to { markets: [...] }.
Unwrapping the envelope keeps the effect's output shape identical, so call sites (ensureMarket in CTFExchangeV2/Exchange handlers) need no changes.