Backfill historical Polymarket fills for one bound wallet

Runs a maker-OR-taker filtered `eth_getLogs` against both Polymarket V2 exchange contracts for the wallet identified by `:id`, decodes each fill, and persists to `event_trades` (idempotent on `(provider, tx_hash, log_index)`). Expected yield: 5–50 rows per N-day window. Caller must own the wallet (the wallet is resolved against the caller org). Polymarket bindings only.