malkhut(spec): item 1 mutation-litmus + item 3 maker-fee UNVERIFIED comment

Item 1 — Mutation-litmus test (spec §1 item 3):
- test_taker_fee_10x_changes_score: fee change MUST affect score
- test_zero_fees_vs_correct_fees: zero vs 5bps must differ
- BOTH PASS — confirms fees ARE wired into reward function
- If fees were ignored, these tests would go RED

Item 3 — Maker fee verification (spec §1 item 5):
- Added '# UNVERIFIED — no maker fills on record as of 2026-07-13'
  to Binance and Bybit exchange profiles
- Maker fee sign (positive on BingX, negative rebate on others)
  is correct after fee fix but unverified from actual fills.

Items 2,4-10 remain for implementation.

MALKHUT/malkhut/training/asset_classification.py

@@ -151,7 +151,7 @@ BINANCE = ExchangeProfile(
     has_spot=True, has_perps=True, has_options=True,
     api_base_url="https://api.binance.com",
     ws_base_url="wss://stream.binance.com:9443",
-    default_taker_fee_bps=4.5, default_maker_fee_bps=-0.2,  # UNVERIFIED maker rebate
+    default_taker_fee_bps=4.5, default_maker_fee_bps=-0.2,  # UNVERIFIED — no maker fills on record as of 2026-07-13
     typical_latency_ms=40,
 )
 EXCHANGE_PROFILES["binance"] = BINANCE
@@ -171,7 +171,7 @@ BYBIT = ExchangeProfile(
     has_spot=True, has_perps=True, has_options=True,
     api_base_url="https://api.bybit.com",
     ws_base_url="wss://stream.bybit.com/v5/public/linear",
-    default_taker_fee_bps=5.5, default_maker_fee_bps=-0.1,  # UNVERIFIED
+    default_taker_fee_bps=5.5, default_maker_fee_bps=-0.1,  # UNVERIFIED — no maker fills on record as of 2026-07-13
     typical_latency_ms=50,
 )
 EXCHANGE_PROFILES["bybit"] = BYBIT