toys: rename oq to osh

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

toys/osh

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
-# oq: non-interactive ollie query via b/ namespace.
+# osh: non-interactive ollie query via b/ namespace.
 #
-# Usage: oq [flags] [prompt...]
-#        echo "prompt" | oq [flags]
+# Usage: osh [flags] [prompt...]
+#        echo "prompt" | osh [flags]
 #
 # Flags:
 #   -name     base name for the job(s); suffixed with -0, -1, ...
@@ -18,7 +18,7 @@ set -euo pipefail
 
 MOUNT=${OLLIE_9MOUNT:-$HOME/mnt/ollie}
 
-die() { printf 'oq: %s\n' "$*" >&2; exit 1; }
+die() { printf 'osh: %s\n' "$*" >&2; exit 1; }
 
 name=; cwd=; agent=; backend=; model=; output=; parallel=1; keep=0