feat(pid): instrument index, line list and equipment list from the graph

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd

docs/tool-inventory.json

@@ -3,7 +3,7 @@
   "schema_version": 1,
   "package_version": "1.5.1",
   "totals": {
-    "tools": 161,
+    "tools": 164,
     "resources": 6,
     "prompts": 5,
     "groups": 20
@@ -21,7 +21,7 @@
     "entity_query": 9,
     "layers": 14,
     "layouts": 12,
-    "pid": 4,
+    "pid": 7,
     "premium": 12,
     "solids": 5,
     "system": 7,
@@ -1717,6 +1717,20 @@
         "readOnlyHint": false
       }
     },
+    {
+      "name": "pid_equipment_list",
+      "group": "pid",
+      "cost": "read",
+      "summary": "Equipment list derived from the P&ID graph (tag, kind, ports, connections); optional CSV.",
+      "tags": [
+        "pid",
+        "query"
+      ],
+      "annotations": {
+        "title": "P&ID: Equipment List",
+        "readOnlyHint": true
+      }
+    },
     {
       "name": "pid_graph",
       "group": "pid",
@@ -1731,6 +1745,20 @@
         "readOnlyHint": true
       }
     },
+    {
+      "name": "pid_instrument_index",
+      "group": "pid",
+      "cost": "read",
+      "summary": "Instrument index derived from the P&ID graph (tag, function, loop, connections); optional CSV.",
+      "tags": [
+        "pid",
+        "query"
+      ],
+      "annotations": {
+        "title": "P&ID: Instrument Index",
+        "readOnlyHint": true
+      }
+    },
     {
       "name": "pid_line_draw",
       "group": "pid",
@@ -1745,6 +1773,20 @@
         "readOnlyHint": false
       }
     },
+    {
+      "name": "pid_line_list",
+      "group": "pid",
+      "cost": "read",
+      "summary": "Line list derived from the P&ID graph (number, class, size, spec, from/to); optional CSV.",
+      "tags": [
+        "pid",
+        "query"
+      ],
+      "annotations": {
+        "title": "P&ID: Line List",
+        "readOnlyHint": true
+      }
+    },
     {
       "name": "pid_symbol_insert",
       "group": "pid",