Extend moon level to 1000 tiles with wide platform gaps

Expand moon01.lvl from 200 to 1000 tiles using a Python generator
script. The level features 27 gap sections with floating one-way
platforms at varying heights, progressing from easy (8-tile gaps) to
challenging (22-tile gaps with tiny platforms). 20 asteroids spread
across the level. Increase tilemap line buffer from 1024 to 16384
bytes to support wide levels.

src/engine/tilemap.c

@@ -15,7 +15,7 @@ bool tilemap_load(Tilemap *map, const char *path, SDL_Renderer *renderer) {
 
     memset(map, 0, sizeof(Tilemap));
 
-    char line[1024];
+    char line[16384];
     char tileset_path[256] = {0};
     int  current_layer = -1; /* 0=collision, 1=bg, 2=fg */
     int  row = 0;