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/exa/connector.json

@@ -1,9 +1,9 @@
 {
   "id": "exa",
   "name": "Exa",
-  "version": 1,
-  "version_string": "1.0.0",
-  "version_release_date": "2026-07-19",
+  "version": 2,
+  "version_string": "1.0.1",
+  "version_release_date": "2026-07-21",
   "type": "mcp_remote",
   "scope": "global",
   "tags": [
@@ -15,7 +15,7 @@
   "docs": [
     {
       "lang": "en",
-      "description": "AI-powered web search, content extraction, and embeddings via Exa's neural search engine. Perfect for deep research, finding specific information, and analyzing page content. Works without an API key (free rate-limited tier) — add your own key for higher limits.",
+      "description": "AI-powered web search, content extraction, and embeddings via Exa's neural search engine. Perfect for deep research, finding specific information, and analyzing page content. Works without an API key (free rate-limited tier) \u2014 add your own key for higher limits.",
       "llm_short_description": "Search the web and extract page content using Exa's neural search engine. Tools: web_search_exa, web_fetch_exa."
     }
   ],
@@ -42,5 +42,15 @@
   },
   "homepage": "https://exa.ai",
   "icon_small": "icon_sm.png",
-  "icon_large": "icon_lg.png"
-}
+  "icon_large": "icon_lg.png",
+  "tools": [
+    {
+      "name": "web_search_exa",
+      "display_name": "Web Search"
+    },
+    {
+      "name": "web_fetch_exa",
+      "display_name": "Web Fetch"
+    }
+  ]
+}