Add universal GitNexus skills for Cursor and Hermes.

Consolidate connect, graph, and search workflows with mobile endpoint defaults and shared installation docs.

Co-authored-by: Cursor <cursoragent@cursor.com>

gitnexus-connect/scripts/gitnexus-health.sh

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+# GitNexus health check — Cursor, Hermes, operator.
+set -euo pipefail
+
+BASE="${GITNEXUS_SERVER_URL:-https://gitnexus.mobile.agency-ai.dev}"
+BASE="${BASE%/}"
+REPO="${GITNEXUS_DEFAULT_REPO:-one-gateway}"
+
+echo "=== GitNexus health ==="
+echo "Server: $BASE"
+echo
+
+echo "--- GET /api/health ---"
+HEALTH=$(curl -fsS "$BASE/api/health" 2>&1) || {
+  echo "FAIL: cannot reach $BASE/api/health"
+  echo "$HEALTH"
+  exit 1
+}
+echo "$HEALTH"
+echo
+
+echo "--- GET /api/repos ---"
+REPOS=$(curl -fsS "$BASE/api/repos" 2>&1) || {
+  echo "FAIL: cannot reach $BASE/api/repos"
+  echo "$REPOS"
+  exit 1
+}
+echo "$REPOS"
+echo
+
+if command -v python3 >/dev/null 2>&1; then
+  if echo "$REPOS" | python3 -c "
+import json, sys
+repos = json.load(sys.stdin)
+names = [r.get('name', '') for r in repos]
+target = sys.argv[1]
+sys.exit(0 if target in names else 1)
+" "$REPO" 2>/dev/null; then
+    echo "OK: repo '$REPO' is indexed"
+  else
+    echo "WARN: repo '$REPO' not found in index (check analyze on server)"
+    exit 1
+  fi
+else
+  if echo "$REPOS" | grep -q "\"name\":\"$REPO\"" || echo "$REPOS" | grep -q "\"name\": \"$REPO\""; then
+    echo "OK: repo '$REPO' appears in response"
+  else
+    echo "WARN: repo '$REPO' not found in response"
+    exit 1
+  fi
+fi
+
+echo
+echo "=== All checks passed ==="