v1.3.0

Adds the out-of-battle poison damage pulse to the fullscreen flash overlay: every fourth step with a poisoned party member, the dark 0.45-alpha pulse now covers the whole window instead of just the centered 160x144 square (the veil is drawn around the letterbox so the flash stays uniform at any zoom).

v1.2.1

Fixes the centered flash square for spawn-started battles on outdoor maps (Route 1/2 with Wilds of Kanto): the fullscreen flash overlay is now state-driven and always covers the window while a transition is flashing.

v1.2.0

The intro transition now plays for every battle trigger: overworld spawns, scripted trainer battles (rivals, Jessie & James), static encounters and the Viridian catch tutorial. The wipe selection follows the vanilla bits; the fullscreen flash applies wherever the flash plays.

v1.0.1

Documentation fix: clarified that the flash applies to wild encounters and battles against stronger foes (the circle wipes), not trainer battles. No code changes.

v1.0.0

Fullscreen flash for the battle intro transition on non-4:3 windows. See README.md for install.