feat: produce on planets, unload on routes

internal/controller/science.go

@@ -1,6 +1,7 @@
 package controller
 
 import (
+	"fmt"
 	"slices"
 
 	"github.com/google/uuid"
@@ -86,3 +87,14 @@ func (c *Cache) raceScience(ri int) []game.Science {
 	c.validateRaceIndex(ri)
 	return c.g.Race[ri].Sciences
 }
+
+func (c *Cache) mustScience(ri int, id uuid.UUID) *game.Science {
+	c.validateRaceIndex(ri)
+	r := &c.g.Race[ri]
+	i := slices.IndexFunc(r.Sciences, func(s game.Science) bool { return s.ID == id })
+	if i < 0 {
+		panic(fmt.Sprintf("science not found for race=%q id=%v", r.Name, id))
+	}
+	return &c.g.Race[ri].Sciences[i]
+
+}