Bring fights to their target win rates

uo-loadtest combat (#127) gives win rates per danger level for a new colonist, a trained fighter and a party, with proposed targets (colonist 95/75/45/15/2, trained 100/95/80/50/15, party 100/100/95/80/50). First table: animals lose every fight to today's blessed colonists (danger 2 wins 100 %), bandit camps are about right, casters lose to anything that closes in (the caster AI), melee can't hunt deer (by design).

• After the creatures and progression branches land: switch the suite's presets to the new character creation (preset_sheet in crates/uo-loadtest/src/combat.rs) and the new catalog (species_profile), add the new species to the danger tiers, rerun.
• Tune species stats and starting kits until each tier is within 10 points of its target.

Done when the table in docs/economy.md § 17 is rerun on the alpha's content and every row sits near its target.