fix(openclaw): batch config set calls into single exec (#3319)

Merges 4 separate runner.runServer() calls (model, sandbox, browser,
channel stubs) into one exec with commands chained by `;`. On Sprite
(container-exec, not persistent SSH), many sequential execs exhaust the
connection and cause "connection closed" / "context deadline exceeded"
on later steps like gateway startup.

Before: 4 execs → 14 "Config overwrite" log lines → flaky connection
After:  1 exec  → same config result → stable connection for gateway

Individual commands use `;` not `&&` so a failure in one (e.g. browser
path not found) doesn't skip the rest — these are all non-fatal prefs.

Bumps 1.0.15 -> 1.0.16.

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@openrouter/spawn",
-  "version": "1.0.15",
+  "version": "1.0.16",
   "type": "module",
   "bin": {
     "spawn": "cli.js"