feat: Add interactive packet documentation system

- Create JSON-based packet documentation for 145 packets (66 incoming, 79 outgoing)
- Add HTML template with search, filtering, and navigation
- Support enum/bitfield field display with values and descriptions
- Support packet variants for version-specific structures
- Include 0xBF extended command subpackets documentation
- Add PowerShell build script to generate final HTML

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Distribution/Data/packets/incoming/entity.json

@@ -0,0 +1,82 @@
+{
+  "category": "Entity",
+  "packets": [
+    {
+      "id": "0x06",
+      "name": "Use Request (Double-Click)",
+      "description": "Sent when the player double-clicks an item or mobile. Can also trigger paperdoll if high bit is set.",
+      "direction": "incoming",
+      "isDynamic": false,
+      "size": 5,
+      "fields": [
+        { "name": "packetId", "type": "byte", "size": 1, "value": "0x06", "description": "Packet identifier" },
+        { "name": "serial", "type": "uint", "size": 4, "description": "Serial of the target. If high bit (0x80000000) is set, opens player's paperdoll instead." }
+      ],
+      "source": {
+        "file": "Projects/UOContent/Network/Packets/IncomingEntityPackets.cs",
+        "line": 61
+      }
+    },
+    {
+      "id": "0x09",
+      "name": "Look Request (Single-Click)",
+      "description": "Sent when the player single-clicks an item or mobile to see its name/properties.",
+      "direction": "incoming",
+      "isDynamic": false,
+      "size": 5,
+      "fields": [
+        { "name": "packetId", "type": "byte", "size": 1, "value": "0x09", "description": "Packet identifier" },
+        { "name": "serial", "type": "uint", "size": 4, "description": "Serial of the target entity" }
+      ],
+      "source": {
+        "file": "Projects/UOContent/Network/Packets/IncomingEntityPackets.cs",
+        "line": 105
+      }
+    },
+    {
+      "id": "0xB6",
+      "name": "Object Help Request",
+      "description": "Sent when the player requests help/info about an object (Shift+Click or context menu).",
+      "direction": "incoming",
+      "isDynamic": false,
+      "size": 9,
+      "fields": [
+        { "name": "packetId", "type": "byte", "size": 1, "value": "0xB6", "description": "Packet identifier" },
+        { "name": "serial", "type": "uint", "size": 4, "description": "Serial of the target entity" },
+        { "name": "unknown", "type": "byte", "size": 1, "description": "Unknown" },
+        { "name": "language", "type": "ascii", "size": 3, "description": "Language code (e.g., 'ENU')" }
+      ],
+      "source": {
+        "file": "Projects/UOContent/Network/Packets/IncomingEntityPackets.cs",
+        "line": 32
+      }
+    },
+    {
+      "id": "0xD6",
+      "name": "Batch Query Properties",
+      "description": "Sent by the client to request Object Property Lists (tooltips) for multiple entities at once.",
+      "direction": "incoming",
+      "isDynamic": true,
+      "size": "3 + (4 * entityCount)",
+      "fields": [
+        { "name": "packetId", "type": "byte", "size": 1, "value": "0xD6", "description": "Packet identifier" },
+        { "name": "length", "type": "ushort", "size": 2, "description": "Packet length" },
+        {
+          "name": "serials",
+          "type": "array",
+          "description": "List of entity serials to query",
+          "loop": {
+            "countField": "(length-3)/4",
+            "fields": [
+              { "name": "serial", "type": "uint", "size": 4, "description": "Entity serial" }
+            ]
+          }
+        }
+      ],
+      "source": {
+        "file": "Projects/UOContent/Network/Packets/IncomingEntityPackets.cs",
+        "line": 154
+      }
+    }
+  ]
+}