Delete the stale .voidbot ignore lines and stage exclude

The .voidbot directory no longer exists in Eve. Remove its three .gitignore
entries and the --exclude=.voidbot tar argument in scripts/stage-to-eve.ps1.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitignore

@@ -25,6 +25,3 @@ flutter/eve_parity/assets/repixelizer/
 *.deb
 *.ipa
 *.dSYM/
-.voidbot/birth/
-.voidbot/logs/
-.voidbot/state/*.msgpack

scripts/stage-to-eve.ps1

@@ -21,7 +21,6 @@ tar `
   --exclude=flutter `
   --exclude=tools `
   --exclude=web `
-  --exclude=.voidbot `
   --exclude=packages `
   -cf $archive `
   -C $projectRoot .