fix: deactivate all disciplines when entering/exiting the Spire

- Add deactivateAll() action to discipline-slice.ts
- Call deactivateAll() in createEnterSpireMode() (combat-descent-actions.ts)
- Add spireMode guard in gameStore.ts tick() to skip discipline processTick
- Call deactivateAll() in exitSpireMode() (combatStore.ts) as safety measure
- Extract buildConversionParams to utils/conversion-params.ts to keep gameStore.ts under 400 lines
- Add regression tests (5 tests, all 1136 passing)

Fixes #347

docs/circular-deps.txt

@@ -1,9 +1,10 @@
 # Circular Dependencies
-Generated: 2026-06-10T08:50:57.213Z
-Found: 2 circular chain(s) — these MUST be fixed before modifying involved files.
+Generated: 2026-06-10T09:19:26.381Z
+Found: 3 circular chain(s) — these MUST be fixed before modifying involved files.
 
 1. 1) stores/golem-combat-actions.ts > stores/golem-combat-helpers.ts
-2. 2) stores/combatStore.ts > stores/combat-descent-actions.ts > stores/attunementStore.ts
+2. 2) stores/attunementStore.ts > stores/combatStore.ts > stores/combat-descent-actions.ts
+3. 3) stores/attunementStore.ts > stores/combatStore.ts > stores/combat-descent-actions.ts > stores/non-combat-room-actions.ts
 
 ## How to fix
 1. Identify which import in the chain can be extracted to a shared types/utils file.