Task 3: Step 2 complete - plan sub-tasks for bug fixes

docs/task3/subtask_8.md

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+# Sub-Task 8: Mana System Conversion Regen Deduction (Bug 10)
+
+## Scope
+- **Core files affected**:
+  - Mana system logic (e.g., `utils/manaUtils.ts`, `hooks/useMana.ts`)
+  - Mana regeneration calculation functions
+  - Mana state management (e.g., `store/manaSlice.ts`)
+- **Files potentially affected**:
+  - `types/mana.ts` (mana type definitions, conversion rates)
+  - Any components displaying mana regen rates (to show effective vs raw regen)
+  - StatsTab (will be updated in Sub-Task 9 to show conversion drains)
+
+## Acceptance Criteria
+1. Mana conversion rates (from attunements) are deducted from raw mana regeneration rate
+2. Example: 3.8 raw regen − 0.2 transference conversion = 3.6 effective raw regen (verify via calculation checks)
+3. Effective regen is used for all mana regeneration in-game
+4. Conversion drains are properly tracked and available for UI display (needed for Sub-Task 9)
+
+## Dependencies
+- None (independent, but Sub-Task 9 depends on this)
+
+## Estimated Complexity
+- Medium (mana calculation logic update)