test: add cross-module integration tests for tick pipeline

Add 38 integration tests split across 4 files (all under 400 lines):
- cross-module-helpers.ts: shared resetAllStores() and tickN() utilities
- cross-module-combat-meditation.test.ts (12 tests): combat floor
  clearing, meditation regen flow, incursion effects, convert action
- cross-module-prestige-discipline.test.ts (15 tests): prestige loop
  reset, discipline mana drain/XP, pact ritual completion
- cross-module-lifecycle-consistency.test.ts (11 tests): full loop
  lifecycle, store consistency invariants, pause/gameOver blocking

All 38 new + 112 existing tests pass.

docs/circular-deps.txt

@@ -1,8 +1,8 @@
 # Circular Dependencies
-Generated: 2026-05-25T13:20:07.523Z
+Generated: 2026-05-25T15:37:17.998Z
 Found: 6 circular chain(s) — these MUST be fixed before modifying involved files.
 
-1. Processed 135 files (1.5s) (2 warnings)
+1. Processed 135 files (1.7s) (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

docs/dependency-graph.json

@@ -1,6 +1,6 @@
 {
   "_meta": {
-    "generated": "2026-05-25T13:20:05.764Z",
+    "generated": "2026-05-25T15:37:16.139Z",
     "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."
   },

docs/project-structure.txt

@@ -199,6 +199,10 @@ Mana-Loop/
 │       │   │   ├── crafting-utils-equipment.test.ts
 │       │   │   ├── crafting-utils-recipe.test.ts
 │       │   │   ├── crafting-utils-time.test.ts
+│       │   │   ├── cross-module-combat-meditation.test.ts
+│       │   │   ├── cross-module-helpers.ts
+│       │   │   ├── cross-module-lifecycle-consistency.test.ts
+│       │   │   ├── cross-module-prestige-discipline.test.ts
 │       │   │   ├── discipline-math.test.ts
 │       │   │   ├── discipline-prerequisites.test.ts
 │       │   │   ├── enemy-barrier-utils.test.ts