✅ Murmur ap cost regression exhaust bottleneck

Category	Regression
Status	Passing
Test	tests/test_abilities_passive.py::test_murmur_ap_cost_regression_exhaust_bottleneck

Tests interaction between Murmur.

Preconditions

• Lane 0: P1's Murmur (#002) — READIED

Action

• Directly call get_passive_modifiers(state, murmur, "ap_cost")

result = get_passive_modifiers(state, murmur_on_field, "ap_cost")

Expected Postconditions

• Returns -2 (passive modifier only; exhaust check is separate)

Assertions

assert result == -2, f"Expected passive ap_cost modifier = -2, got {result}"