seeding expansion

also: replace energy output with energy output density

src/physcom/engine/pipeline.py

@@ -417,22 +417,25 @@ class Pipeline:
         """Simple heuristic estimation from dependency data."""
         raw: dict[str, float] = {m: 0.0 for m in metric_names}
 
-        # Extract force output from power source
-        force_watts = 0.0
+        # Extract intrinsic properties from entities
+        power_density = 0.0  # W/kg
+        energy_density = 0.0  # Wh/kg
         mass_kg = 100.0  # default
         for entity in combo.entities:
             for dep in entity.dependencies:
-                if dep.key == "force_output_watts" and dep.constraint_type == "provides":
-                    force_watts = max(force_watts, float(dep.value))
-                if dep.key == "min_mass_kg" and dep.constraint_type == "range_min":
+                if dep.key == "power_density_w_kg" and dep.constraint_type == "provides":
+                    power_density = max(power_density, float(dep.value))
+                if dep.key == "energy_density_wh_kg" and dep.constraint_type == "provides":
+                    energy_density = max(energy_density, float(dep.value))
+                if dep.key == "mass_kg" and dep.constraint_type == "range_min":
                     mass_kg = max(mass_kg, float(dep.value))
 
-        # Rough speed estimate: F=ma -> v proportional to power/mass
-        if "speed" in raw and mass_kg > 0:
-            raw["speed"] = min(force_watts / mass_kg * 0.5, 300000)
+        # Rough speed estimate: higher power density → faster
+        if "speed" in raw:
+            raw["speed"] = min(power_density * 0.5, 300000)
 
         if "cost_efficiency" in raw:
-            raw["cost_efficiency"] = max(0.01, 2.0 - force_watts / 100000)
+            raw["cost_efficiency"] = max(0.01, 2.0 - power_density / 1000)
 
         if "safety" in raw:
             raw["safety"] = 0.5
@@ -441,9 +444,21 @@ class Pipeline:
             raw["availability"] = 0.5
 
         if "range_fuel" in raw:
-            raw["range_fuel"] = min(force_watts * 0.01, 1e10)
+            raw["range_fuel"] = min(energy_density * 10, 1e10)
 
         if "range_degradation" in raw:
             raw["range_degradation"] = 365
 
+        if "cargo_capacity" in raw:
+            raw["cargo_capacity"] = mass_kg * 0.5
+
+        if "cargo_capacity_kg" in raw:
+            raw["cargo_capacity_kg"] = mass_kg * 0.3
+
+        if "environmental_impact" in raw:
+            raw["environmental_impact"] = max(0.0, power_density * 0.2)
+
+        if "reliability" in raw:
+            raw["reliability"] = 0.5
+
         return raw