fix(game): small reconciliation fixes (science, generation, dismantle, report)

A bundle of small rules-vs-engine corrections:

- Science proportions: accept a sum that equals 1 only up to float
  rounding (was an exact != 1 comparison); the rules example is reworded
  so it is unambiguous that proportions are fractions summing to 1.
- Generation: super-big planets get a resource strictly above 0 (minimum
  0.001, was a hard 0.1); the rules table is fixed for big planets (1-10,
  not 0.1-10) and the false "0.1-20 / average 1.5" resource claim removed.
- Dismantle over a neutral planet now unloads the colonists and settles
  it (the planet becomes the race's); over a foreign planet they are
  still lost. The rules clause is clarified for own / neutral / foreign.
- Report: ship-production entries are written at the compacted report
  index (was the planet's map index, which could write past the grown
  slice and panic); the incoming-group "remaining distance" is measured
  from the group's current hyperspace position, not its origin planet
  (matching OtherGroup).
- validator: the cargo-value error now carries the cargo value, not the
  shields value.

Tests added for each behavioural fix; rules.txt updated in the same patch.

game/internal/controller/science_test.go

@@ -136,3 +136,14 @@ func TestResearchTech(t *testing.T) {
 	assert.Equal(t, 1.35, rr.Tech.Value(game.TechShields))
 	assert.Equal(t, 1.45, rr.Tech.Value(game.TechCargo))
 }
+
+// TestScienceCreateFloatTolerance checks that proportions which sum to 1 only
+// up to float rounding (0.1+0.2+0.3+0.4 == 1.0000000000000002) are accepted,
+// while a sum clearly off one is still rejected.
+func TestScienceCreateFloatTolerance(t *testing.T) {
+	_, g := newCache()
+	assert.NoError(t, g.ScienceCreate(Race_0.Name, "FloatSum", 0.1, 0.2, 0.3, 0.4))
+	assert.ErrorContains(t,
+		g.ScienceCreate(Race_0.Name, "NotOne", 0.1, 0.2, 0.3, 0.3),
+		e.GenericErrorText(e.ErrInputScienceSumValues))
+}