refactor: Replace natural-regen disciplines with mana conversion speed disciplines

- Add conversionRate + sourceManaTypes fields to DisciplineDefinition
- Rewrite elemental-regen.ts: 8 base disciplines now convert raw→element
- Rewrite elemental-regen-advanced.ts: 6 composite/exotic disciplines with proper source recipes
- Update discipline-effects.ts: produce conversion entries instead of regen bonuses
- Update gameStore.ts tick: drain source mana types, add to target element
- Update discipline-slice.ts: gate activation on source mana type access
- Update discipline-math.ts: resolve mana type IDs to 'X mana' display names
- Update DisciplinesTab.tsx: show conversion info, source requirements, and lock state
- Update DisciplineDebugSection.tsx: pass elements to activate()
- Update effects.ts: remove regen_{element} merge (no longer produced)

docs/circular-deps.txt

@@ -1,13 +1,14 @@
 # Circular Dependencies
-Generated: 2026-05-26T16:28:29.780Z
-Found: 6 circular chain(s) — these MUST be fixed before modifying involved files.
+Generated: 2026-05-26T16:39:59.755Z
+Found: 7 circular chain(s) — these MUST be fixed before modifying involved files.
 
 1. Processed 135 files (1.5s) (2 warnings)
-2. 1) utils/floor-utils.ts > utils/room-utils.ts > utils/enemy-utils.ts
-3. 2) utils/floor-utils.ts > utils/room-utils.ts
-4. 3) stores/gameStore.ts > stores/gameActions.ts
-5. 4) stores/gameStore.ts > stores/gameLoopActions.ts
-6. 5) stores/gameStore.ts > stores/tick-pipeline.ts
+2. 1) effects/discipline-effects.ts > stores/discipline-slice.ts > stores/combatStore.ts > stores/combat-actions.ts
+3. 2) utils/floor-utils.ts > utils/room-utils.ts > utils/enemy-utils.ts
+4. 3) utils/floor-utils.ts > utils/room-utils.ts
+5. 4) stores/gameStore.ts > stores/gameActions.ts
+6. 5) stores/gameStore.ts > stores/gameLoopActions.ts
+7. 6) stores/gameStore.ts > stores/tick-pipeline.ts
 
 ## How to fix
 1. Identify which import in the chain can be extracted to a shared types/utils file.