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.

TODO.md

@@ -29,3 +29,9 @@ exit counterpart.
 ## ~~Asteroid refinement~~ ✓
 Implemented: base speed 120→200, accel 200→350, respawn 3→6s, stagger 0-3→0-8s,
 random horizontal drift (±60 px/s), moon level reduced from 24 to 8 asteroids.
+
+## Jetpack boost blue flame effects
+- Add continuous blue flame particles trailing from the player during jetpack
+  boost (while boost is active, not just on burst)
+- Add blue accents to the jetpack burst effect itself — mix blue flame particles
+  into the existing yellow/orange exhaust plume