chore: remove unused imports, vars, and params — 84 imports, 7 vars, 16 params across 45+ files

docs/circular-deps.txt

@@ -1,8 +1,8 @@
 # Circular Dependencies
-Generated: 2026-05-25T15:37:17.998Z
+Generated: 2026-05-25T16:26:37.693Z
 Found: 6 circular chain(s) — these MUST be fixed before modifying involved files.
 
-1. Processed 135 files (1.7s) (2 warnings)
+1. Processed 135 files (1.6s) (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": "2026-05-25T15:37:16.139Z",
+    "generated": "2026-05-25T16:26:35.898Z",
     "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."
   },