Drop the old Windows desktop build artifacts from the tree

.gitignore

@@ -30,3 +30,7 @@ server/data/
 test-results/
 .claude/worktrees/
 server/public
+
+# Old Tauri/Windows desktop build outputs — published artifacts, not source.
+# They are still in git history; keeping them out of the tip keeps deploy clones small.
+legacy/releases/