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/weather/connector.json

@@ -25,7 +25,9 @@
   "icon_small": "icon_sm.svg",
   "icon_large": "icon_lg.svg",
   "scope": "global",
-  "requires": ["PYTHON"],
+  "requires": [
+    "PYTHON"
+  ],
   "tags": [
     "weather",
     "mcp",
@@ -40,7 +42,7 @@
       "weather_mcp_server.py"
     ]
   },
-  "version": 3,
-  "version_string": "3.0.0",
-  "version_release_date": "2026-07-19"
-}
+  "version": 4,
+  "version_string": "3.0.1",
+  "version_release_date": "2026-07-21"
+}