fix(ocp-cli): replace eval-curl with bash array to preserve JSON body quoting

`eval curl "$_AUTH_HEADER" "$@"` re-tokenizes its argument list according
to bash word-splitting rules. When OCP_ADMIN_KEY is set, the JSON body
`'{"name": "laptop"}'` (which contains a space) gets split into
`'{name:'` and `'laptop}'` — two separate args — so curl receives a
malformed body and the server rejects the request.

Fix: replace the `_AUTH_HEADER` string + `eval` pattern with a bash array
`_AUTH_ARGS`. Array expansion via `"${_AUTH_ARGS[@]}"` preserves word
boundaries across substitution with no eval required. Both code paths
(OCP_ADMIN_KEY env var and ~/.ocp/admin-key file fallback) and the empty
case (no admin key) are preserved unchanged.

Verified via `bash -x` trace:
  Before: `curl … -d '{name:' 'laptop}'` (body split, malformed)
  After:  `curl … -d '{"name": "testkey-pr-c"}'` (body intact, single arg)

Identified during fresh-state Round 2 testing on MacBook.

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

ocp

@@ -8,21 +8,18 @@ set -euo pipefail
 
 PROXY="http://127.0.0.1:3456"
 
-# Auth header for multi-key mode: reads from OCP_ADMIN_KEY env or ~/.ocp/admin-key file
-_AUTH_HEADER=""
+# Auth args for multi-key mode: reads from OCP_ADMIN_KEY env or ~/.ocp/admin-key file
+# Using a bash array preserves word boundaries — no eval needed.
+_AUTH_ARGS=()
 if [[ -n "${OCP_ADMIN_KEY:-}" ]]; then
-  _AUTH_HEADER="-H \"Authorization: Bearer $OCP_ADMIN_KEY\""
+  _AUTH_ARGS=(-H "Authorization: Bearer $OCP_ADMIN_KEY")
 elif [[ -f "$HOME/.ocp/admin-key" ]]; then
-  _AUTH_HEADER="-H \"Authorization: Bearer $(cat "$HOME/.ocp/admin-key")\""
+  _AUTH_ARGS=(-H "Authorization: Bearer $(cat "$HOME/.ocp/admin-key")")
 fi
 
 # Wrapper: curl with optional auth
 _curl() {
-  if [[ -n "$_AUTH_HEADER" ]]; then
-    eval curl "$_AUTH_HEADER" "$@"
-  else
-    curl "$@"
-  fi
+  curl "${_AUTH_ARGS[@]}" "$@"
 }
 
 _json() { python3 -m json.tool 2>/dev/null || cat; }