fix: discipline reset on mana depletion and re-activation after stop

- #143: processTick now removes drained disciplines from activeIds and calls onStopPracticing so currentAction resets to 'meditate'
- #144: Removed paused guard from canProceedDiscipline so stopped disciplines can be re-activated
- Updated test to match new expected behavior for paused disciplines

src/lib/game/__tests__/discipline-math.test.ts

@@ -230,12 +230,12 @@ describe('canProceedDiscipline', () => {
     expect(result).toBe(true);
   });
 
-  it('should return false when discipline is paused', () => {
+  it('should return true when discipline is paused (paused state is handled by activate, not canProceedDiscipline)', () => {
     const state: DisciplineState = { id: 'raw-mastery', xp: 0, paused: true };
     const result = canProceedDiscipline(rawMastery, state, {
       rawMana: 1000,
     });
-    expect(result).toBe(false);
+    expect(result).toBe(true);
   });
 
   it('should return true when raw mana is sufficient', () => {

src/lib/game/stores/discipline-slice.ts

@@ -154,6 +154,7 @@ export const useDisciplineStore = create<DisciplineStore>()(
         const newUnlockedEffects: string[] = [];
         const newProcessedPerks = [...s.processedPerks];
 
+        const drainedIds: string[] = [];
         for (const id of s.activeIds) {
           const disc = newDisciplines[id];
           if (!disc) continue;
@@ -168,6 +169,7 @@ export const useDisciplineStore = create<DisciplineStore>()(
 
           if (!available || available < drain) {
             newDisciplines[id] = { ...disc, paused: true };
+            drainedIds.push(id);
             continue;
           }
 
@@ -206,8 +208,15 @@ export const useDisciplineStore = create<DisciplineStore>()(
           MAX_CONCURRENT_DISCIPLINES + 3
         );
 
+        // Remove mana-drained disciplines from activeIds so onStopPracticing fires
+        const newActiveIds = s.activeIds.filter((aid) => !drainedIds.includes(aid));
+        if (newActiveIds.length === 0 && s.activeIds.length > 0) {
+          get().practicingCallbacks?.onStopPracticing?.();
+        }
+
         set({
           disciplines: newDisciplines,
+          activeIds: newActiveIds,
           totalXP: newXP,
           concurrentLimit: Math.max(s.concurrentLimit, newLimit),
           processedPerks: newProcessedPerks,

src/lib/game/utils/discipline-math.ts

@@ -68,7 +68,6 @@ export function canProceedDiscipline(
   gameState?: { elements?: Record<string, any>; rawMana?: number }
 ): boolean {
   if (!disciplineState) return true;
-  if (disciplineState.paused) return false;
 
   // If no game state provided, allow activation (optimistic)
   if (!gameState) return true;