This patch is all about making boss attacks readable: one clear warning per attack, a strike that lands exactly when the warning ends, and no more damage you can't see coming.

Fixes

• Horizontal and diagonal boss beams were not being drawn at all, but still dealt damage. Only straight up/down beams were visible. All beam directions now render correctly (Railstorm Nemesis, King Iron Veil, rotating beam patterns and more).
• King Silent Fang, Silent Strike: its beams fired off the top of the screen and could never hit you. It now fires a four-beam fan aimed at you, with a gap in the middle to slip through.
• Fortress Prime, Reinforced Barrage: the damage area was a circle smaller than the square on screen, so the corners and top/bottom edges of a red cell were safe. The hit area now matches the drawn square exactly.
• Fortress Prime, Reinforced Barrage: the cell warnings disappeared before the later cells exploded. Each cell now keeps its warning until the moment it explodes.
• Grid attacks (Fortress Prime, Mortar Maw) used the full window width, so edge cells were partly hidden under the side HUD panels. Grids now cover only the play area.
• Boss defeat now plays a proper explosion sound instead of a short click.

Changes

• Boss beams: the separate warning strips that appeared before some beams are gone. Each signature beam now has a single 1.5-second warning line, and the strike lands at the same moment as before.
• Bosses now hold still while warning for and firing a beam, so the beam no longer swings around with the boss.
• Beam strikes now hum with a pulsing glow instead of the whole beam stretching wider and narrower.
• Railstorm Nemesis: Rail Charging, Multi Rail and Overdrive now fire from the boss toward you instead of sweeping rails that only covered half the screen. Multi Rail picks two of three aimed lanes; Overdrive fires 16 beams within 30 degrees of your position.
• Railstorm Nemesis: every beam is now a thin electric zigzag. Signature attacks are drawn thicker and brighter so you can tell them apart from basic attacks, which now share a single color. The actual hit width is the same thin line for all of them.
• Grid attacks: red means it's about to explode, empty means safe (including cells that have already exploded). The green safe markers have been removed. Each cell bursts in a flash at the exact moment its warning ends, and that's when damage happens.
• Mortar Maw, Farewell Count: now uses the same red cell warnings as Fortress Prime.
• Mortar Maw, Bombardment Grid (5x5): instead of showing only the safe cell, it now marks all 24 danger cells, and the warning is 2 seconds instead of 1.
• Shield Crusher, Armor Lock: removed the decorative circles over the armor plates that looked like a separate attack.