Add bin/repo deploy and --host on every server-facing command

deploy runs build then push, which is the whole workflow on a local build
machine. It resolves the build host before building so a missing --host fails
in a second rather than after a long compile.

--host now overrides $OMARCHY_BUILD_HOST and .build-host on deploy, push, and
the build trigger in omarchy-pkgs release, so a server can be named per
invocation without arming the release auto-trigger.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

bin/repo

@@ -59,6 +59,7 @@ show_usage() {
   echo "  remove      Remove a specific package"
   echo "  sync        Sync repository to remote"
   echo "  push        Upload local builds to the build host and publish them there"
+  echo "  deploy      Build locally, then push: one command for a local build machine"
   echo ""
   echo "Typical workflows:"
   echo "  $0 release                  # Complete release workflow"
@@ -130,6 +131,10 @@ push)
   "$SCRIPT_DIR/push-build" "$@" 2>&1 | tee "$LOG_FILE"
   exit ${PIPESTATUS[0]}
   ;;
+deploy)
+  "$SCRIPT_DIR/deploy" "$@" 2>&1 | tee "$LOG_FILE"
+  exit ${PIPESTATUS[0]}
+  ;;
 -h | --help | help)
   show_usage
   ;;