add slot ttl output with effective timeout config

agent/nix_builder_autoscaler/models.py

@@ -131,6 +131,35 @@ class StateSummary(BaseModel):
     haproxy: HaproxySummary = Field(default_factory=HaproxySummary)
 
 
+class CapacityPolicy(BaseModel):
+    """Effective capacity timeout and sizing policy."""
+
+    min_slots: int
+    max_slots: int
+    target_warm_slots: int
+    max_leases_per_slot: int
+    idle_scale_down_seconds: int
+    drain_timeout_seconds: int
+    launch_timeout_seconds: int
+    boot_timeout_seconds: int
+    binding_timeout_seconds: int
+    terminating_timeout_seconds: int
+
+
+class SchedulerPolicy(BaseModel):
+    """Effective scheduler timing policy."""
+
+    tick_seconds: float
+    reconcile_seconds: float
+
+
+class EffectiveConfigResponse(BaseModel):
+    """GET /v1/config/effective response."""
+
+    capacity: CapacityPolicy
+    scheduler: SchedulerPolicy
+
+
 class ErrorDetail(BaseModel):
     """Structured error detail."""