user_fills and user_fills_by_time missing dex parameter for HIP-3 support

[keitaj]

Feedback from an HIP-3 MM bot operator. We needed per-DEX fill data for cost efficiency analysis and had to use raw HTTP as a workaround.

Problem

user_fills and user_fills_by_time don't accept a dex parameter, making it impossible to retrieve fill history for HIP-3 (builder-deployed perpetuals) markets through the SDK.

Current code

# info.py line 199 — no dex parameter
def user_fills(self, address: str) -> Any:
    return self.post("/info", {"type": "userFills", "user": address})

# info.py line 228 — no dex parameter
def user_fills_by_time(self, address, start_time, end_time=None, aggregate_by_time=False):
    return self.post("/info", {"type": "userFillsByTime", "user": address, ...})

Comparison with other methods

Other methods already support dex:

• user_state(address, dex="") ✅
• open_orders(address, dex="") ✅
• all_mids(dex="") ✅
• meta(dex="") ✅
• user_fills(address) ❌ — no dex parameter
• user_fills_by_time(address, ...) ❌ — no dex parameter

Impact

HIP-3 bot operators cannot track per-DEX fill history through the SDK. We had to use raw HTTP calls as a workaround:

requests.post(API + "/info", json={"type": "userFills", "user": addr, "dex": "xyz"})

Suggestion

Add dex parameter consistent with other methods:

def user_fills(self, address: str, dex: str = "") -> Any:
    return self.post("/info", {"type": "userFills", "user": address, "dex": dex})

[mifth]

Good find. As an addition the Info.meta_and_asset_ctxs() has also no dex parameter.
#278