Remove unused nuzlocke rules, reorganize into core and playstyle

Remove firstEncounterOnly, permadeath, nicknameRequired, and
postGameCompletion from the rules system — they are either implicit
(it's a nuzlocke tracker) or not enforced. Move levelCaps to core
(it's displayed in the sticky bar). Create a new "playstyle" category
for hardcoreMode and setModeOnly — informational rules useful for
stats but not enforced by the tracker. Remove the completion category
entirely. Add sub-task beans for the rules overhaul epic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/RuleBadges.tsx

@@ -21,9 +21,7 @@ export function RuleBadges({ rules }: RuleBadgesProps) {
           className={`px-2 py-0.5 rounded-full text-xs font-medium ${
             def.category === 'core'
               ? 'bg-blue-900/40 text-blue-300 light:bg-blue-100 light:text-blue-700'
-              : def.category === 'completion'
-                ? 'bg-green-900/40 text-green-300 light:bg-green-100 light:text-green-700'
-                : 'bg-amber-900/40 text-amber-300 light:bg-amber-100 light:text-amber-800'
+              : 'bg-purple-900/40 text-purple-300 light:bg-purple-100 light:text-purple-700'
           }`}
         >
           {def.name}

frontend/src/components/RulesConfiguration.tsx

@@ -19,8 +19,7 @@ export function RulesConfiguration({
     ? RULE_DEFINITIONS.filter((r) => !hiddenRules.has(r.key))
     : RULE_DEFINITIONS
   const coreRules = visibleRules.filter((r) => r.category === 'core')
-  const difficultyRules = visibleRules.filter((r) => r.category === 'difficulty')
-  const completionRules = visibleRules.filter((r) => r.category === 'completion')
+  const playstyleRules = visibleRules.filter((r) => r.category === 'playstyle')
 
   const handleRuleChange = (key: keyof NuzlockeRules, value: boolean) => {
     onChange({ ...rules, [key]: value })
@@ -74,11 +73,13 @@ export function RulesConfiguration({
 
       <div className="bg-surface-1 rounded-lg shadow">
         <div className="px-4 py-3 border-b border-border-default">
-          <h3 className="text-lg font-medium text-text-primary">Difficulty Modifiers</h3>
-          <p className="text-sm text-text-tertiary">Optional rules to increase the challenge</p>
+          <h3 className="text-lg font-medium text-text-primary">Playstyle</h3>
+          <p className="text-sm text-text-tertiary">
+            Describe how you're playing — doesn't affect tracker behavior
+          </p>
         </div>
         <div className="px-4">
-          {difficultyRules.map((rule) => (
+          {playstyleRules.map((rule) => (
             <RuleToggle
               key={rule.key}
               name={rule.name}
@@ -89,26 +90,6 @@ export function RulesConfiguration({
           ))}
         </div>
       </div>
-
-      {completionRules.length > 0 && (
-        <div className="bg-surface-1 rounded-lg shadow">
-          <div className="px-4 py-3 border-b border-border-default">
-            <h3 className="text-lg font-medium text-text-primary">Completion</h3>
-            <p className="text-sm text-text-tertiary">When is the run considered complete</p>
-          </div>
-          <div className="px-4">
-            {completionRules.map((rule) => (
-              <RuleToggle
-                key={rule.key}
-                name={rule.name}
-                description={rule.description}
-                enabled={rules[rule.key]}
-                onChange={(value) => handleRuleChange(rule.key, value)}
-              />
-            ))}
-          </div>
-        </div>
-      )}
     </div>
   )
 }