build: replace upstream team-list dependency, add neuron launcher preferring compiled binary

packages/opencode/bin/neuron

@@ -1,5 +1,6 @@
 #!/bin/sh
-# Neuron launcher: run the CLI from source under Bun.
+# Neuron launcher: prefer the compiled binary from a local build,
+# fall back to running from source under Bun.
 SELF="$0"
 while [ -L "$SELF" ]; do
   LINK="$(readlink "$SELF")"
@@ -9,4 +10,14 @@ while [ -L "$SELF" ]; do
   esac
 done
 DIR="$(cd "$(dirname "$SELF")" && pwd)"
-exec bun run --conditions=browser "$DIR/../src/index.ts" "$@"
+PKG="$DIR/.."
+ARCH=$(uname -m)
+case "$ARCH" in
+  arm64) TARGET="opencode-darwin-arm64" ;;
+  x86_64) TARGET="opencode-darwin-x64" ;;
+  *) TARGET="" ;;
+esac
+if [ -n "$TARGET" ] && [ -x "$PKG/dist/$TARGET/bin/opencode" ]; then
+  exec "$PKG/dist/$TARGET/bin/opencode" "$@"
+fi
+exec bun run --conditions=browser "$PKG/src/index.ts" "$@"