feat(search): add local meta search wrapper

skills/local-meta-search/SKILL.md

@@ -0,0 +1,36 @@
+---
+name: local-meta-search
+description: Search via local SearXNG first and automatically fall back to the local Brave MCP service when SearXNG is unavailable or weak. Use for normal web lookups when privacy/local-first search is preferred.
+metadata:
+  openclaw:
+    requires:
+      bins: ["bash", "jq", "mcporter", "bb"]
+    emoji: "🧭"
+---
+
+# Local Meta Search
+
+## Policy
+
+1. Try **SearXNG first**.
+2. If SearXNG fails or returns weak/empty output, try **Brave MCP**.
+3. Clearly label which backend produced the final results.
+
+## Backends
+
+- SearXNG: `skills/searxng-local-search/scripts/search.sh`
+- Brave MCP: `skills/brave-mcp-search/scripts/search.sh`
+
+## Quick usage
+
+```bash
+scripts/search.sh "query"
+```
+
+Optional JSON options:
+
+```bash
+scripts/search.sh "query" '{"count":5}'
+```
+
+Options are passed through as best-effort to the underlying backend.

skills/local-meta-search/scripts/search.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="/home/openclaw/.openclaw/workspace"
+SEARX_SCRIPT="$ROOT/skills/searxng-local-search/scripts/search.sh"
+BRAVE_SCRIPT="$ROOT/skills/brave-mcp-search/scripts/search.sh"
+
+if [[ $# -lt 1 ]]; then
+  echo 'Usage: scripts/search.sh "query" '\''{"count":5}'\''' >&2
+  exit 1
+fi
+
+QUERY="$1"
+OPTS="${2:-}"
+TMP1="$(mktemp)"
+TMP2="$(mktemp)"
+trap 'rm -f "$TMP1" "$TMP2"' EXIT
+
+run_searx() {
+  if [[ -n "$OPTS" ]]; then
+    "$SEARX_SCRIPT" "$QUERY" "$OPTS" >"$TMP1" 2>&1
+  else
+    "$SEARX_SCRIPT" "$QUERY" >"$TMP1" 2>&1
+  fi
+}
+
+run_brave() {
+  if [[ -n "$OPTS" ]]; then
+    "$BRAVE_SCRIPT" "$QUERY" "$OPTS" >"$TMP2" 2>&1
+  else
+    "$BRAVE_SCRIPT" "$QUERY" >"$TMP2" 2>&1
+  fi
+}
+
+searx_good=false
+if run_searx; then
+  if grep -qE '^[0-9]+\.' "$TMP1"; then
+    searx_good=true
+  fi
+fi
+
+if [[ "$searx_good" == true ]]; then
+  printf 'Backend: SearXNG\n\n'
+  cat "$TMP1"
+  exit 0
+fi
+
+if run_brave; then
+  printf 'Backend: Brave MCP (fallback)\n\n'
+  cat "$TMP2"
+  exit 0
+fi
+
+echo 'Error: both SearXNG and Brave MCP failed.' >&2
+echo >&2
+echo '--- SearXNG output ---' >&2
+cat "$TMP1" >&2 || true
+echo >&2
+echo '--- Brave MCP output ---' >&2
+cat "$TMP2" >&2 || true
+exit 3