Preserve ALPHA_1.zip (production-system image); ignore __pycache__

ALPHA_1.zip is the archived resource behind the git-ignored ALPHA_1/
working directory (the patched production hard-drive image the
emulator mounts). Also ignore Python __pycache__/ dirs.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitignore

@@ -1,7 +1,7 @@
 # Developer hard-drive dump — not part of the release tree
 /sda4/
 
-# hard drive dump of a production system
+# hard drive dump of a production system (preserved in-repo as ALPHA_1.zip)
 /ALPHA_1/
 
 # Emulator working files (downloaded binaries, game image, captures)
@@ -10,3 +10,4 @@
 /emulator/*.png
 /emulator/dbx_*.txt
 /emulator/screen*.png
+__pycache__/