feat: friendly tool names per MCP title field or manifest

- Aggiunto campo 'title' a tools/list in tutti gli script MCP locali
  (Gmail, Gcal, Drive, Email, SSH, Weather, Wikipedia, WhatsApp)
- Aggiunto tools[]/display_name nel manifest per connector remoti/package
  esterni (Firecrawl, HTTP Fetch, Exa, Tavily, SerpAPI Flights)
- Documentata convenzione e resolution order in SKALD.md
- Aggiornata manifest_guide.md per tools[] in connectors.json
- Bumped version e sha256 per tutti i 13 connector

connectors/whatsapp/connector.json

@@ -44,7 +44,7 @@
   "homepage": "https://github.com/WhiskeySockets/Baileys",
   "icon_small": "icon_sm.png",
   "icon_large": "icon_lg.png",
-  "version": 2,
-  "version_string": "2.0.2",
-  "version_release_date": "2026-07-19"
-}
+  "version": 3,
+  "version_string": "2.0.3",
+  "version_release_date": "2026-07-21"
+}