refactor: Redesign Invoker disciplines for pact bonuses and guardian boons

- Replace generic spell-casting/void-manipulation with pact-focused disciplines
- Add Pact Attunement (light): reduces pact signing time, boosts pact affinity
- Add Guardian's Boon (dark): amplifies all guardian unique perks
- Add pactAffinityBonus and guardianBoonMultiplier stat keys to effect system
- Apply pactAffinityBonus in pact signing time calculation (gameStore)
- Scale guardian boon values by guardianBoonMultiplier (combat-utils)
- Guard Invoker discipline activation behind signedPacts.length > 0
- Add 'Signed guardian pact' prerequisite display in discipline-math

src/lib/game/data/disciplines/invoker.ts

@@ -1,59 +1,82 @@
 // ─── Invoker Discipline Files ─────────────────────────────────────────────────
 // Attunement-focused disciplines for Invoker role
+// The Invoker forms pacts with guardians and channels their elemental boons.
 
 import { DisciplinesAttunementType } from '../../types/disciplines';
 import type { DisciplineDefinition } from '../../types/disciplines';
 
 export const invokerDisciplines: DisciplineDefinition[] = [
   {
-    id: 'spell-casting',
-    name: 'Spell Casting',
+    id: 'pact-attunement',
+    name: 'Pact Attunement',
     attunement: DisciplinesAttunementType.INVOKER,
     manaType: 'light',
-    baseCost: 10,
-    description: 'Improve spell power and effectiveness.',
-    statBonus: { stat: 'baseDamageBonus', baseValue: 6, label: 'Base Damage' },
-    difficultyFactor: 130,
-    scalingFactor: 65,
-    drainBase: 3,
+    baseCost: 12,
+    description:
+      'Deepen your bond with guardian spirits. Reduces pact signing time and amplifies pact power.',
+    statBonus: { stat: 'pactAffinityBonus', baseValue: 0.05, label: 'Pact Affinity' },
+    difficultyFactor: 150,
+    scalingFactor: 80,
+    drainBase: 4,
+    requires: ['signed_pact'],
     perks: [
       {
-        id: 'spell-1',
+        id: 'pact-affinity-scaling',
         type: 'once',
-        threshold: 200,
+        threshold: 100,
         value: 0,
-        description: '+10 Base Damage',
-        bonus: { stat: 'baseDamageBonus', amount: 10 },
+        description: 'Unlock pact affinity scaling — pact bonuses grow with XP.',
       },
       {
-        id: 'spell-2',
+        id: 'pact-affinity-infinite',
         type: 'infinite',
-        threshold: 400,
-        value: 30,
-        description: 'Every 300 XP: +5 Base Damage',
-        bonus: { stat: 'baseDamageBonus', amount: 5 },
+        threshold: 200,
+        value: 100,
+        description: 'Every 100 XP: +5% pact affinity',
+        bonus: { stat: 'pactAffinityBonus', amount: 0.05 },
+      },
+      {
+        id: 'pact-power-boost',
+        type: 'capped',
+        threshold: 500,
+        value: 200,
+        maxTier: 5,
+        description: 'Every 200 XP: +3% guardian pact boon strength (max +15%)',
+        bonus: { stat: 'guardianBoonMultiplier', amount: 0.03 },
       },
     ],
   },
   {
-    id: 'void-manipulation',
-    name: 'Void Manipulation',
+    id: 'guardians-boon',
+    name: "Guardian's Boon",
     attunement: DisciplinesAttunementType.INVOKER,
-    manaType: 'void',
-    baseCost: 15,
-    description: 'Master the exotic void mana for devastating effects.',
-    statBonus: { stat: 'baseDamageMultiplier', baseValue: 0.15, label: 'Base Damage Multiplier' },
+    manaType: 'dark',
+    baseCost: 18,
+    description:
+      'Channel the unique blessings of every guardian you have bonded with. Amplifies all guardian unique perks.',
+    statBonus: { stat: 'guardianBoonMultiplier', baseValue: 0.10, label: 'Guardian Boon Power' },
     difficultyFactor: 200,
     scalingFactor: 100,
-    drainBase: 7,
+    drainBase: 6,
+    requires: ['signed_pact'],
     perks: [
       {
-        id: 'void-1',
+        id: 'boon-1',
         type: 'once',
-        threshold: 300,
+        threshold: 100,
         value: 0,
-        description: 'Unlock void damage multiplier',
+        description: 'Active guardian boons gain +10% effectiveness',
+        bonus: { stat: 'guardianBoonMultiplier', amount: 0.10 },
+      },
+      {
+        id: 'boon-2',
+        type: 'capped',
+        threshold: 200,
+        value: 350,
+        maxTier: 5,
+        description: 'Every 350 XP: +5% guardian boon effectiveness (max +25%)',
+        bonus: { stat: 'guardianBoonMultiplier', amount: 0.05 },
       },
     ],
   },
-];
+];