V1.31.0: armor holds Dexterity back

- All of a Dexterity modifier counts toward AC in light armor, at most +2
  in medium armor, none in heavy armor, going by the equipped item's kind
- The gear card says when the armor is holding something back
- Library and seed armor notes and docs brought in line

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "frontend",
   "private": true,
-  "version": "1.30.0",
+  "version": "1.31.0",
   "type": "module",
   "scripts": {
     "dev": "vite",

frontend/src/components/InfoTip.tsx

@@ -16,7 +16,7 @@ const STAT_HELP: Record<string, string> = {
   SKILL_BONUS: 'Skill Bonus — added when you roll to use a skill. The governing ability modifier, plus your proficiency bonus if you are proficient (doubled if you have expertise).',
   EXPERTISE: 'Expertise — doubles your proficiency bonus for this skill, on top of being proficient.',
   ABILITY_MODIFIER: 'Ability Modifier — the number added to rolls that use this ability. floor((score − 10) / 2).',
-  ARMOR_BONUS: 'Extra AC — a number the DM sets, added to AC on top of 10 + Dex modifier and whatever equipped gear gives. Armor itself is an equipped item. Unarmored Defense (barbarian, monk) and a draconic sorcerer’s scales are worked out for you: do not add them here.',
+  ARMOR_BONUS: 'Extra AC — a number the DM sets, added to AC on top of 10 + Dex modifier and whatever equipped gear gives. Armor itself is an equipped item, and medium or heavy armor holds back how much Dexterity counts. Unarmored Defense (barbarian, monk) and a draconic sorcerer’s scales are worked out for you: do not add them here.',
   SPEED: 'Speed — how far you can move on your turn, in feet. Set by your species, unless overridden.',
   SPELL_SAVE_DC: 'Spell Save DC — the difficulty a target must beat to resist your spell. 8 + proficiency bonus + your spellcasting ability modifier.',
   SPELL_ATTACK_BONUS: 'Spell Attack Bonus — added when you make a spell attack roll. Proficiency bonus + your spellcasting ability modifier.',

frontend/src/components/campaign/EntryDetail.tsx

@@ -104,7 +104,9 @@ function GearDetail({ campaignId, pool, entry, added, onClose }: { added: ReactN
             )}
           </Field>
           <p className="combatant-sub mt-sm">
-            Its AC is still set below, as +AC. This says what kind it is, for the class features that depend on what is worn: a barbarian’s and a
+            Its AC is still set below, as +AC (its usual AC less 10). This says what kind it is. The sheet counts all of a character’s
+            Dexterity toward AC in light armor, at most +2 in medium armor and none in heavy armor. It also decides the class features
+            that depend on what is worn: a barbarian’s and a
             monk’s Unarmored Defense and a draconic sorcerer’s scales stop while armor is equipped, a monk’s also behind a shield, and a
             barbarian’s extra speed stops in heavy armor.
           </p>