fix: discipline tab NaN display — correct statBonus.baseValue destructuring, rate-aware /sec labels, NaN guards

- Fix root cause: baseValue was undefined (destructured from definition
  instead of statBonus.baseValue), causing calculateStatBonus to produce NaN
- Remove hardcoded /sec suffix from stat bonus display; now detects rate
  vs flat stats using isRateStat() helper
- Fix computePerkCurrentEffect: perks only show /sec for actual rate stats
- Add NaN guards in DisciplineCard display layer as safety net
- Clean up DisciplinesTab UX (proper summary label, remove unused rawMana)

docs/circular-deps.txt

@@ -1,4 +1,4 @@
 # Circular Dependencies
-Generated: 2026-05-28T13:28:24.658Z
+Generated: 2026-05-28T16:14:24.376Z
 
 No circular dependencies found. ✅

docs/dependency-graph.json

@@ -1,6 +1,6 @@
 {
   "_meta": {
-    "generated": "2026-05-28T13:28:22.544Z",
+    "generated": "2026-05-28T16:14:22.630Z",
     "description": "Import dependency graph for src/lib/game. Keys are files, values are arrays of files they import.",
     "usage": "To find what a file affects, search for its path in the VALUES. To find what a file depends on, look at its KEY entry."
   },
@@ -556,6 +556,7 @@
       "constants.ts",
       "effects/discipline-effects.ts",
       "stores/combatStore.ts",
+      "stores/discipline-slice.ts",
       "stores/gameStore.types.ts",
       "stores/manaStore.ts",
       "stores/prestigeStore.ts",