feat: IMAP mail sync with thread-to-contact matching (PRD §6.1)

Real IMAP connection via imapflow library:
- Connects to IMAP server (IMAPFlow, TLS on port 993)
- Fetches recent messages (configurable limit, default 20)
- Extracts: from, fromEmail, subject, date, snippet (200 chars)
- Thread-to-contact matching (PRD §6.1):
  1. Match sender email against persons table
  2. If no person match, extract domain and match against company.website
  3. Returns matchedCompany + matchedPerson for each email
- Audit-logged (action: crm.mailsync:imap)
- Zod validated (host, port, user, password, folder, limit)
- 502 on IMAP connection failure with detail
- 400 on validation failure

Tested: invalid creds → 502 'IMAP connection failed', missing host → 400

skills/podcast-generate/package.json

@@ -0,0 +1,30 @@
+{
+  "name": "podcast-generate-online",
+  "version": "1.0.0",
+  "description": "Generate podcast audio from text using z-ai LLM and TTS",
+  "type": "module",
+  "main": "dist/index.js",
+  "scripts": {
+    "generate": "tsx generate.ts",
+    "build": "tsc",
+    "prepublishOnly": "npm run build"
+  },
+  "keywords": [
+    "podcast",
+    "tts",
+    "llm",
+    "z-ai"
+  ],
+  "license": "MIT",
+  "dependencies": {
+    "z-ai-web-dev-sdk": "*"
+  },
+  "devDependencies": {
+    "@types/node": "^20",
+    "tsx": "^4.7.0",
+    "typescript": "^5.3.0"
+  },
+  "engines": {
+    "node": ">=18.0.0"
+  }
+}