Adapt Pinscope to DeepSeek, auto datasheets, and a shared library.

Based on manvalan/pinscope main. Default LLM is DeepSeek with local
skills and PDF ingest. Datasheets are fetched from LCSC/TI, stored in
the component library, and review extracts abs-max with a deeper
checklist. Adds scripts/update-pinscope.sh for the production host.

skills/extract-pintable/schema.json

@@ -30,6 +30,20 @@
         },
         "required": ["number", "name"]
       }
+    },
+    "absolute_maximum_ratings": {
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "parameter": {"type": "string"},
+          "min": {"type": ["number", "null"]},
+          "max": {"type": ["number", "null"]},
+          "unit": {"type": "string"},
+          "source_page": {"type": "integer"}
+        },
+        "required": ["parameter", "unit", "source_page"]
+      }
     }
   },
   "required": ["component_subtype", "package_info", "pintable"]