fix: CLI/installer hardening — restart labels, key permissions, unit-secret escaping (#113) (#120)

Three CLI/installer findings from the 2026-05-31 audit (no server.mjs):

1. ocp-plugin `cmdRestart` hardcoded uid 501 + the legacy `ai.openclaw.proxy`
   label, and fell through to a dangerous `pkill -f 'node.*server.mjs' && cd
   ~/.openclaw/projects/*/; node server.mjs &` that could kill an unrelated node
   process and relaunch an env-less ghost proxy from a glob-ambiguous dir. Now uses
   process.getuid() + the live labels (dev.ocp.proxy on macOS, ocp-proxy on Linux
   systemd; the OpenClaw gateway label is unchanged) and drops the pkill fallback
   entirely (returns a manual `ocp restart` message on failure).

2. ocp-connect wrote the quota key unquoted into rc files and a world-readable
   environment.d/ocp.conf. Now single-quotes the value and chmod 600s the rc files
   and ocp.conf (matching the existing auth-profiles.json 0o600 convention).

3. setup.mjs interpolated the injected service-unit secrets (CLAUDE_BIN,
   OCP_ADMIN_KEY, PROXY_ANONYMOUS_KEY) raw into plist <string> and systemd
   Environment= lines. Added xmlEscape() for all plist <string> values and
   assertSafeInjectValue() which rejects control characters (\x00-\x1f — newline,
   CR, tab) before any unit is written, blocking a newline-injected rogue
   Environment= directive. Spaces are intentionally allowed (CLAUDE_BIN paths may
   contain them). XML-escaping on write also resolves plist-merge.mjs's [^<]* regex
   concern transitively (no raw < reaches it) — comment added, logic unchanged.

ALIGNMENT.md: CLI/installer scripts only, no Anthropic operation forwarded → cli.js
citation N/A. No blacklisted tokens or port literals introduced; alignment.yml passes.

Independent fresh-context reviewer (opus): APPROVE (Iron Rule 10) — verified the
control-char regex byte-exact via od (no space-rejection regression), the pkill
fallback fully removed, restart labels match setup.mjs ground truth, OCP keys
(base64url) cannot break the single-quoting, and the validator runs before any write.

Closes #113.

Co-authored-by: dtzp555 <dtzp555@gmail.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

ocp-connect

@@ -634,11 +634,12 @@ PYEOF
     {
       echo ""
       echo "# OCP LAN (added by ocp connect)"
-      echo "export OPENAI_BASE_URL=$base_url/v1"
+      echo "export OPENAI_BASE_URL='$base_url/v1'"
       if [[ -n "$key" ]]; then
-        echo "export OPENAI_API_KEY=$key"
+        echo "export OPENAI_API_KEY='$key'"
       fi
     } >> "$rc_file"
+    chmod 600 "$rc_file" 2>/dev/null || true
   done
 
   echo "  Shell config:"
@@ -671,6 +672,7 @@ PYEOF
         echo "OPENAI_API_KEY=$key"
       fi
     } > "$env_dir/ocp.conf"
+    chmod 600 "$env_dir/ocp.conf" 2>/dev/null || true
     echo ""
     echo "  System-level (systemd):"
     echo "    ✓ $env_dir/ocp.conf"