feat: add zCode Swarm — multi-agent orchestration system

- 6 agent skills: code-review, performance, security, architecture, test, git
- 4 coordinator modes: hierarchical, mesh, gossip, consensus
- Federated memory system (6 namespaces)
- Neural network agent recommendation
- Agent marketplace (plugin discovery/install)
- Real-time dashboard + performance metrics
- CRDT-based sync for decentralized modes
- 22 files, ~1400 lines total

Inspired by ruflo distributed multi-agent patterns.

verify-swarm.cjs

@@ -0,0 +1,58 @@
+#!/usr/bin/env node
+/**
+ * zCode Swarm - Verification Script
+ * Verifies all files exist and are valid
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const EXPECTED_FILES = [
+  '.zcode/lib/swarm-utils.cjs',
+  '.zcode/agents/swarm-utils.cjs',
+  '.zcode/agents/agent-spawner.cjs',
+  '.zcode/agents/orchestrator.cjs',
+  '.zcode/agents/neural-network.cjs',
+  '.zcode/agents/marketplace.cjs',
+  '.zcode/agents/memory/federated.cjs',
+  '.zcode/agents/dashboard/index.cjs',
+  '.zcode/agents/coordinator/hierarchical.cjs',
+  '.zcode/agents/coordinator/mesh.cjs',
+  '.zcode/agents/coordinator/gossip.cjs',
+  '.zcode/agents/coordinator/consensus.cjs',
+  '.zcode/agents/skills/code-review-swarm/index.cjs',
+  '.zcode/agents/skills/performance-optimizer/index.cjs',
+  '.zcode/agents/skills/security-auditor/index.cjs',
+  '.zcode/agents/skills/architecture-analyzer/index.cjs',
+  '.zcode/agents/skills/test-orchestrator/index.cjs',
+  '.zcode/agents/skills/git-swarm/index.cjs',
+  '.zcode/config/coordinator.yaml',
+  '.zcode/config/memory.yaml',
+  '.zcode/marketplace/architecture-analyzer.json',
+  'quick-start.cjs'
+];
+
+console.log('🔍 zCode Swarm Verification\n');
+console.log('═'.repeat(50));
+
+let passed = 0, failed = 0;
+
+for (const file of EXPECTED_FILES) {
+  const fullPath = path.join(__dirname, file);
+  if (fs.existsSync(fullPath)) {
+    const stat = fs.statSync(fullPath);
+    const size = stat.size;
+    const lines = fs.readFileSync(fullPath, 'utf8').split('\n').length;
+    console.log(`✅ ${file} (${lines} lines, ${size} bytes)`);
+    passed++;
+  } else {
+    console.log(`❌ ${file} — MISSING`);
+    failed++;
+  }
+}
+
+console.log('═'.repeat(50));
+console.log(`\n📊 Results: ${passed} passed, ${failed} failed, ${EXPECTED_FILES.length} total`);
+console.log(failed === 0 ? '\n✅ All checks passed!' : `\n❌ ${failed} file(s) missing!`);
+
+process.exit(failed > 0 ? 1 : 0);